Difference between revisions of "Module:Weather/sandbox"

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blackwiki>Erutuon
(using single quotes in certain cases to avoid having to escape double quotes)
blackwiki>Erutuon
(replace more underscores with capitals, rename export as p; add No globals, ton of cleanup, more needed)
Line 1: Line 1:
export = {}
+
require('Module:No globals')
degree = "°" -- used by add_unitNames()
+
 
minus = "−" -- used by makeRow() and makeTable()
+
local p = {}
thinSpace = mw.ustring.char(0x2009) -- used by makeCell()
+
local degree = "°" -- used by addUnitNames()
 +
local minus = "−" -- used by makeRow() and makeTable()
 +
local thinSpace = mw.ustring.char(0x2009) -- used by makeCell()
 +
 
 +
local length, inputUnit, outputUnit, palette, show, cellFormat, precision, decimals
  
 
-- Error message handling
 
-- Error message handling
message = ""
+
local message = ""
  
local function addMessage(new_message)
+
local function addMessage(newMessage)
 
if show then
 
if show then
 
if checkForString(message) then
 
if checkForString(message) then
message = message .. " " .. new_message
+
message = message .. " " .. newMessage
 
else
 
else
message = "Notices: " .. new_message
+
message = "Notices: " .. newMessage
 
end
 
end
 
end
 
end
Line 106: Line 110:
 
end
 
end
 
 
return length, inputUnit, outputUnit
+
return length, inputUnit, outputUnit, cellFormat, show
 
end
 
end
  
Line 114: Line 118:
 
end
 
end
  
function checkForString(string)
+
local function checkForString(string)
 
string = tostring(string)
 
string = tostring(string)
 
return string ~= "" and string ~= nil
 
return string ~= "" and string ~= nil
Line 152: Line 156:
  
 
-- Input parsing
 
-- Input parsing
function makeArray(parameter, array, frame)
+
local function makeArray(parameter, array, frame)
 +
getFormat(frame)
 
local array = {}
 
local array = {}
 
local n = 1
 
local n = 1
Line 177: Line 182:
 
end
 
end
  
function makeArrays(frame)
+
local a, b, c
 +
 
 +
local function makeArrays(frame)
 
getFormat(frame)
 
getFormat(frame)
 
local parameter_a = frame.args.a
 
local parameter_a = frame.args.a
Line 202: Line 209:
 
-- Color generation
 
-- Color generation
  
palettes = {
+
local palettes = {
 
-- The first three arrays in each palette defines background color using a table of four numbers,
 
-- The first three arrays in each palette defines background color using a table of four numbers,
 
-- say { 11, 22, 33, 44 } (values in °C).
 
-- say { 11, 22, 33, 44 } (values in °C).
Line 227: Line 234:
 
}
 
}
  
local function temperature_color(palette, value, outRGB)
+
local function temperatureColor(palette, value, outRGB)
 
--[[ Return style for a table cell based on the given value which
 
--[[ Return style for a table cell based on the given value which
 
should be a temperature in °C. ]]
 
should be a temperature in °C. ]]
Line 234: Line 241:
 
if value == nil then
 
if value == nil then
 
backgroundColor, textColor = 'FFF', '000'
 
backgroundColor, textColor = 'FFF', '000'
addMessage('Value supplied to <span style="background-color: #EEE; font-family: monospace;">temperature_color</span> is not recognized.')
+
addMessage('Value supplied to <span style="background-color: #EEE; font-family: monospace;">temperatureColor</span> is not recognized.')
 
else
 
else
 
local min, max = unpack(palette.white or { -23, 35 })
 
local min, max = unpack(palette.white or { -23, 35 })
Line 278: Line 285:
  
 
local function temperatureColorCSS(palette, value, outRGB)
 
local function temperatureColorCSS(palette, value, outRGB)
return colorCSS(temperature_color(palette, value, outRGB))
+
return colorCSS(temperatureColor(palette, value, outRGB))
 
end
 
end
  
function temperatureCSS(value, unit, palette)
+
local function temperatureCSS(value, unit, palette)
 
local palette = palettes[palette] or palettes.cool
 
local palette = palettes[palette] or palettes.cool
 
local value = tonumber(value)
 
local value = tonumber(value)
Line 288: Line 295:
 
else
 
else
 
if unit == 'C' then
 
if unit == 'C' then
return colorCSS(temperature_color(palette, value))
+
return colorCSS(temperatureColor(palette, value))
 
elseif unit == 'F' then
 
elseif unit == 'F' then
return colorCSS(temperature_color(palette, convert(value, decimals, 'F')))
+
return colorCSS(temperatureColor(palette, convert(value, decimals, 'F')))
 
else
 
else
unit_error(unit or "nil")
+
unitError(unit or "nil")
 
end
 
end
 
end
 
end
Line 298: Line 305:
  
 
local function styleAttribute(palette, value, outRGB)
 
local function styleAttribute(palette, value, outRGB)
local font_size = "font-size: 85%;"
+
local fontSize = "font-size: 85%;"
 
local color = temperatureColorCSS(palette, value, outRGB)
 
local color = temperatureColorCSS(palette, value, outRGB)
return 'style=\"' .. color .. ' ' .. font_size .. '\"'
+
return 'style=\"' .. color .. ' ' .. fontSize .. '\"'
 
end
 
end
  
style_attribute = styleAttribute
+
local style_attribute = styleAttribute
  
function export.temperatureStyle(frame) -- used by Template:Average temperature table/color
+
function p.temperatureStyle(frame) -- used by Template:Average temperature table/color
 
local palette = palettes[frame.args.palette] or palettes.cool
 
local palette = palettes[frame.args.palette] or palettes.cool
 
local unit = frame.args.unit or 'C'
 
local unit = frame.args.unit or 'C'
Line 314: Line 321:
 
return styleAttribute(palette, convert(value, 1, 'F'))
 
return styleAttribute(palette, convert(value, 1, 'F'))
 
else
 
else
unit_error(unit)
+
unitError(unit)
 
end
 
end
 
end
 
end
  
export.temperature_style = export.temperatureStyle
+
p.temperature_style = p.temperatureStyle
  
 
--[[ ==== Cell, row, table generation ==== ]]
 
--[[ ==== Cell, row, table generation ==== ]]
local output_formats = {
+
local outputFormats = {
 
high_low_average_F =
 
high_low_average_F =
 
{ first = "F",
 
{ first = "F",
Line 384: Line 391:
 
}
 
}
  
local function add_unitNames(value, unit)
+
local outputFormat
 +
 
 +
local function addUnitNames(value, yesOrNo, unit)
 
if not unit then unit = inputUnit end
 
if not unit then unit = inputUnit end
 
-- Don't add a unit name to an empty string
 
-- Don't add a unit name to an empty string
value = output_format.unitNames == "yes" and checkForString(value) and value .. "&nbsp;" .. degree .. unit or value
+
value = yesOrNo == "yes" and checkForString(value) and value .. "&nbsp;" .. degree .. unit or value
 
return value
 
return value
 
end
 
end
  
 
local function ifYes(parameter, realization1, realization2)
 
local function ifYes(parameter, realization1, realization2)
 +
local result
 
if realization1 then
 
if realization1 then
 
if realization2 then
 
if realization2 then
Line 405: Line 415:
 
end
 
end
  
function makeCell(output_format, a, b, c)
+
local function makeCell(outputFormat, a, b, c)
local cell, cell_content = "", ""
+
local cell, cellContent = "", ""
local colorCSS, other_CSS, title_attribute, sortkey, attribute_separator, converted_units_separator = "", "", "", "", "", "", ""
+
local colorCSS, otherCSS, titleAttribute, sortkey, attributeSeparator, convertedUnitsSeparator = "", "", "", "", "", "", ""
local styleAttribute, high_low_separator, brackets, values, converted_units = {"", ""}, {"", ""}, {"", ""}, {"", ""}, {"", ""}
+
local styleAttribute, highLowSeparator, brackets, values, convertedUnits = {"", ""}, {"", ""}, {"", ""}, {"", ""}, {"", ""}
 
-- Distinguish styleAttribute variable from styleAttribute function above.
 
-- Distinguish styleAttribute variable from styleAttribute function above.
decimals = ( checkForNumber(output_format.decimals) and output_format.decimals ) or precision
+
decimals = ( checkForNumber(outputFormat.decimals) and outputFormat.decimals ) or precision
 
--[[ Precision is the number of decimals in the first number of the last array.
 
--[[ Precision is the number of decimals in the first number of the last array.
 
This may be a problem for data from Weatherbase,
 
This may be a problem for data from Weatherbase,
Line 416: Line 426:
 
 
 
if checkForNumber(b) and checkForNumber(a) then
 
if checkForNumber(b) and checkForNumber(a) then
values, high_low_separator = { round(a, decimals), round(b, decimals) }, { thinSpace .. "/" .. thinSpace, ifYes(output_format.convertUnits, thinSpace .. "/" .. thinSpace) }
+
values, highLowSeparator = { round(a, decimals), round(b, decimals) }, { thinSpace .. "/" .. thinSpace, ifYes(outputFormat.convertUnits, thinSpace .. "/" .. thinSpace) }
 
elseif checkForNumber(a) then
 
elseif checkForNumber(a) then
 
values = { round(a, decimals), "" }
 
values = { round(a, decimals), "" }
Line 422: Line 432:
 
values = { round(c, decimals), "" }
 
values = { round(c, decimals), "" }
 
end
 
end
if output_format.first == inputUnit then
+
if outputFormat.first == inputUnit then
if output_format.convertUnits == "yes" then
+
if outputFormat.convertUnits == "yes" then
converted_units = { add_unitNames(convert(values[1], decimals), outputUnit), add_unitNames(convert(values[2], decimals), outputUnit) }
+
convertedUnits = { addUnitNames(convert(values[1], decimals), outputFormat.unitNames, outputUnit), addUnitNames(convert(values[2], decimals), outputFormat.unitNames, outputUnit) }
 
end
 
end
values = { add_unitNames(values[1]), add_unitNames(values[2]) }
+
values = { addUnitNames(values[1], outputFormat.unitNames), addUnitNames(values[2], outputFormat.unitNames) }
elseif output_format.first == "C" or output_format.first == "F" then
+
elseif outputFormat.first == "C" or outputFormat.first == "F" then
if output_format.convertUnits == "yes" then
+
if outputFormat.convertUnits == "yes" then
converted_units = { add_unitNames(values[1]), add_unitNames(values[2]) }
+
convertedUnits = { addUnitNames(values[1]), addUnitNames(values[2], outputFormat.unitNames) }
 
end
 
end
values = { add_unitNames(convert(values[1], decimals), outputUnit), add_unitNames(convert(values[2], decimals), outputUnit) }
+
values = { addUnitNames(convert(values[1], decimals), outputUnit), addUnitNames(convert(values[2], decimals), outputFormat.unitNames, outputUnit) }
 
else
 
else
if output_format.first == nil then
+
if outputFormat.first == nil then
output_format.first = "nil"
+
outputFormat.first = "nil"
 
end
 
end
addMessage('<span style="background-color: #EEE; font-family: monospace;">' .. output_format.first .. '</span>, the value for <span style="background-color: #EEE; font-family: monospace;">first</span> in <span style="background-color: #EEE; font-family: monospace;">output_format</span> is not recognized.')
+
addMessage('<span style="background-color: #EEE; font-family: monospace;">' .. outputFormat.first .. '</span>, the value for <span style="background-color: #EEE; font-family: monospace;">first</span> in <span style="background-color: #EEE; font-family: monospace;">outputFormat</span> is not recognized.')
 
end
 
end
 
--[[
 
--[[
Line 448: Line 458:
 
even more so when more than one of these things are true.
 
even more so when more than one of these things are true.
 
]]
 
]]
if output_format.convertUnits == "yes" then
+
if outputFormat.convertUnits == "yes" then
brackets = output_format.brackets == "yes" and { "(", ")" } or { "", "" }
+
brackets = outputFormat.brackets == "yes" and { "(", ")" } or { "", "" }
if output_format.lineBreak == "auto" then
+
if outputFormat.lineBreak == "auto" then
converted_units_separator = ( checkForString(values[2]) or decimals ~= "0" or output_format.show_units == "yes" ) and "<br>" or "&nbsp;"
+
convertedUnitsSeparator = ( checkForString(values[2]) or decimals ~= "0" or outputFormat.showUnits == "yes" ) and "<br>" or "&nbsp;"
 
else
 
else
converted_units_separator = output_format.lineBreak == "yes" and "<br>" or output_format.lineBreak == "no" and "&nbsp;" or error('Value for lineBreak not recognized')
+
convertedUnitsSeparator = outputFormat.lineBreak == "yes" and "<br>" or outputFormat.lineBreak == "no" and "&nbsp;" or error('Value for lineBreak not recognized')
 
end
 
end
 
end
 
end
 
 
cell_content = values[1] .. high_low_separator[1] .. values[2] .. converted_units_separator .. brackets[1] .. converted_units[1] .. high_low_separator[2] .. converted_units[2] .. brackets[2]
+
cellContent = values[1] .. highLowSeparator[1] .. values[2] .. convertedUnitsSeparator .. brackets[1] .. convertedUnits[1] .. highLowSeparator[2] .. convertedUnits[2] .. brackets[2]
 
 
 
if checkForNumber(c) then
 
if checkForNumber(c) then
colorCSS = output_format.color == "yes" and temperatureCSS(c, inputUnit, palette) or ""
+
colorCSS = outputFormat.color == "yes" and temperatureCSS(c, inputUnit, palette) or ""
 
if checkForNumber(b) and checkForNumber(a) then
 
if checkForNumber(b) and checkForNumber(a) then
attribute_value = output_format.first == inputUnit and c or convert(c, decimals)
+
local attributeValue = outputFormat.first == inputUnit and c or convert(c, decimals)
sortkey = output_format.sortable == "yes" and " data-sort-value=\"" .. attribute_value .. "\"" or ""
+
sortkey = outputFormat.sortable == "yes" and " data-sort-value=\"" .. attributeValue .. "\"" or ""
title_attribute = " title=\"Average temperature: " .. attribute_value .. " " .. degree .. output_format.first .. "\""
+
titleAttribute = " title=\"Average temperature: " .. attributeValue .. " " .. degree .. outputFormat.first .. "\""
 
end
 
end
 
elseif checkForNumber(b) then
 
elseif checkForNumber(b) then
 
colorCSS = ""
 
colorCSS = ""
 
elseif checkForNumber(a) then
 
elseif checkForNumber(a) then
colorCSS = output_format.color == "yes" and temperatureCSS(a, inputUnit, palette) or ""
+
colorCSS = outputFormat.color == "yes" and temperatureCSS(a, inputUnit, palette) or ""
 
else
 
else
 
addMessage('Neither a nor b nor c are strings.')
 
addMessage('Neither a nor b nor c are strings.')
 
end
 
end
other_CSS = output_format.smallFont == "yes" and "font-size: 85%;" or ""
+
otherCSS = outputFormat.smallFont == "yes" and "font-size: 85%;" or ""
if checkForString(colorCSS) or checkForString(other_CSS) then
+
if checkForString(colorCSS) or checkForString(otherCSS) then
 
styleAttribute = { "style=\"", "\"" }
 
styleAttribute = { "style=\"", "\"" }
 
end
 
end
 
 
if checkForString(other_CSS) or checkForString(colorCSS) or checkForString(title_attribute) or checkForString(sortkey) then
+
if checkForString(otherCSS) or checkForString(colorCSS) or checkForString(titleAttribute) or checkForString(sortkey) then
attribute_separator = " | "
+
attributeSeparator = " | "
 
end
 
end
cell = "\n| " .. styleAttribute[1] .. colorCSS .. other_CSS .. styleAttribute[2] .. title_attribute .. sortkey .. attribute_separator .. cell_content
+
cell = "\n| " .. styleAttribute[1] .. colorCSS .. otherCSS .. styleAttribute[2] .. titleAttribute .. sortkey .. attributeSeparator .. cellContent
 
return cell
 
return cell
 
end
 
end
  
function export.makeRow(frame)
+
function p.makeRow(frame)
 
makeArrays(frame)
 
makeArrays(frame)
 
local output = ""
 
local output = ""
Line 496: Line 506:
 
end
 
end
 
if cellFormat then
 
if cellFormat then
output_format = cellFormat
+
outputFormat = cellFormat
 
end
 
end
 
if a and b and c then
 
if a and b and c then
 
for i = 1, length do
 
for i = 1, length do
if not output_format then
+
if not outputFormat then
output_format = output_formats.high_low_average_F
+
outputFormat = outputFormats.high_low_average_F
 
end
 
end
output = output .. makeCell(output_format, a[i], b[i], c[i])
+
output = output .. makeCell(outputFormat, a[i], b[i], c[i])
 
end
 
end
 
elseif a and b then
 
elseif a and b then
 
for i = 1, length do
 
for i = 1, length do
if not output_format then
+
if not outputFormat then
output_format = output_formats.high_low_F
+
outputFormat = outputFormats.high_low_F
 
end
 
end
output = output .. makeCell(output_format, a[i], b[i])
+
output = output .. makeCell(outputFormat, a[i], b[i])
 
end
 
end
 
elseif a then
 
elseif a then
 
for i = 1, length do
 
for i = 1, length do
if not output_format then
+
if not outputFormat then
output_format = output_formats.average_F
+
outputFormat = outputFormats.average_F
 
end
 
end
output = output .. makeCell(output_format, a[i])
+
output = output .. makeCell(outputFormat, a[i])
 
end
 
end
 
end
 
end
Line 524: Line 534:
 
end
 
end
  
function export.makeTable(frame)
+
function p.makeTable(frame)
 
makeArrays(frame)
 
makeArrays(frame)
 
local output = "{| class=\"wikitable center nowrap\""
 
local output = "{| class=\"wikitable center nowrap\""
 
if cellFormat then
 
if cellFormat then
output_format = cellFormat
+
outputFormat = cellFormat
 
end
 
end
 
if a and b and c then
 
if a and b and c then
 
for i = 1, length do
 
for i = 1, length do
if not output_format then
+
if not outputFormat then
output_format = output_formats.high_low_average_F
+
outputFormat = outputFormats.high_low_average_F
 
end
 
end
output = output .. makeCell(output_format, a[i], b[i], c[i])
+
output = output .. makeCell(outputFormat, a[i], b[i], c[i])
 
end
 
end
 
elseif a and b then
 
elseif a and b then
 
for i = 1, length do
 
for i = 1, length do
if not output_format then
+
if not outputFormat then
output_format = output_formats.high_low_F
+
outputFormat = outputFormats.high_low_F
 
end
 
end
output = output .. makeCell(output_format, a[i], b[i])
+
output = output .. makeCell(outputFormat, a[i], b[i])
 
end
 
end
 
elseif a then
 
elseif a then
 
for i = 1, length do
 
for i = 1, length do
if not output_format then
+
if not outputFormat then
output_format = output_formats.average_F
+
outputFormat = outputFormats.average_F
 
end
 
end
output = output .. makeCell(output_format, a[i])
+
output = output .. makeCell(outputFormat, a[i])
 
end
 
end
 
end
 
end
Line 578: Line 588:
 
]]
 
]]
  
function export.show(frame)
+
function p.show(frame)
 
-- For testing, return wikitext to show graphs of how the red/green/blue colors
 
-- For testing, return wikitext to show graphs of how the red/green/blue colors
 
-- vary with temperature, and a table of the resulting colors.
 
-- vary with temperature, and a table of the resulting colors.
Line 640: Line 650:
 
end
 
end
  
return export
+
return p, palettes

Revision as of 07:16, 8 October 2016

Testcases

Random examples

|output=nocolor sortable one line round CF
−4 / −14 (25 / 6) −2 / −12 (28 / 10) 2 / −7 (36 / 19) 8 / −1 (47 / 30) 13 / 3 (56 / 38) 18 / 7 (64 / 44) 22 / 11 (71 / 52) 22 / 12 (72 / 54) 18 / 8 (64 / 47) 11 / 2 (52 / 36) 4 / −4 (39 / 25) 0 / −11 (32 / 12) 9 / −1 (49 / 31)
|output=FC line break round units
16 °F
(−9 °C)
19 °F
(−7 °C)
28 °F
(−2 °C)
39 °F
(4 °C)
47 °F
(8 °C)
54 °F
(12 °C)
62 °F
(17 °C)
63 °F
(17 °C)
56 °F
(13 °C)
44 °F
(7 °C)
32 °F
(0 °C)
20 °F
(−7 °C)
40 °F
(4 °C)
|output=F
15.6 19.1 27.7 38.8 47.0 53.8 61.5 63.2 55.8 44.2 32.3 20.0 40.0
|output=nocolor sortable round F
25 / 6 28 / 10 36 / 19 47 / 30 56 / 38 64 / 44 71 / 52 72 / 54 64 / 47 52 / 36 39 / 25 32 / 12 49 / 31
|output=sortable C units
−4.1 / −14.2 °C −2.0 / −12.3 °C 2.4 / −7.2 °C 8.6 / −1.1 °C 13.3 / 3.3 °C 17.6 / 6.7 °C 21.8 / 10.9 °C 22.3 / 12.4 °C 17.9 / 8.6 °C 11.2 / 2.4 °C 4.1 / −3.8 °C −2.2 / −11.1 °C 9.3 / −0.4 °C
|a=, |b=, |c=
25 / 6
(−4 / −14)
28 / 10
(−2 / −12)
36 / 19
(2 / −7)
47 / 30
(8 / −1)
56 / 38
(13 / 3)
64 / 44
(18 / 7)
71 / 52
(22 / 11)
72 / 54
(22 / 12)
64 / 47
(18 / 8)
52 / 36
(11 / 2)
39 / 25
(4 / −4)
28 / 12
(−2 / −11)
40 (4)
|a=, |b=
24.7 / 6.5
(−4.1 / −14.2)
28.4 / 9.9
(−2.0 / −12.3)
36.3 / 19.0
(2.4 / −7.2)
47.4 / 30.1
(8.6 / −1.1)
56.0 / 37.9
(13.3 / 3.3)
63.6 / 44.0
(17.6 / 6.7)
71.2 / 51.7
(21.8 / 10.9)
72.1 / 54.3
(22.3 / 12.4)
64.3 / 47.4
(17.9 / 8.6)
52.1 / 36.4
(11.2 / 2.4)
39.3 / 25.2
(4.1 / −3.8)
28.0 / 12.0
(−2.2 / −11.1)
48.7 / 31.3
(9.3 / −0.4)
|messages=show

Lua error at line 15: Tried to read nil global checkForString.

California

Average daily high and low temperatures in °F (°C)
for locations in California,
colored and sortable by average monthly temperature
Place Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Alturas[1] 44 / 18
(7 / −8)
48 / 21
(9 / −6)
54 / 25
(12 / −4)
60 / 28
(16 / −2)
70 / 34
(21 / 1)
79 / 40
(26 / 4)
90 / 44
(32 / 7)
89 / 42
(32 / 6)
80 / 36
(27 / 2)
68 / 28
(20 / −2)
52 / 22
(11 / −6)
42 / 18
(6 / −8)
47
(8)
Bakersfield[2] 56 / 39
(13 / 4)
63 / 42
(17 / 6)
69 / 46
(21 / 8)
75 / 50
(24 / 10)
84 / 58
(29 / 14)
91 / 64
(33 / 18)
97 / 70
(36 / 21)
96 / 69
(36 / 21)
90 / 64
(32 / 18)
79 / 55
(26 / 13)
66 / 45
(19 / 7)
57 / 39
(14 / 4)
65
(18)
Bishop[3] 54 / 23
(12 / −5)
58 / 26
(14 / −3)
66 / 31
(19 / −1)
73 / 36
(23 / 2)
82 / 44
(28 / 7)
92 / 51
(33 / 11)
98 / 56
(37 / 13)
96 / 54
(36 / 12)
88 / 47
(31 / 8)
76 / 37
(24 / 3)
63 / 28
(17 / −2)
53 / 22
(12 / −6)
57
(14)
Bodie[4] 40 / 5
(4 / −15)
41 / 7
(5 / −14)
45 / 11
(7 / −12)
51 / 17
(11 / −8)
61 / 24
(16 / −4)
70 / 30
(21 / −1)
78 / 34
(26 / 1)
77 / 32
(25 / 0)
71 / 26
(22 / −3)
60 / 18
(16 / −8)
49 / 11
(9 / −12)
41 / 6
(5 / −14)
38
(3)
Death Valley[5] 67 / 40
(19 / 4)
73 / 46
(23 / 8)
82 / 55
(28 / 13)
90 / 62
(32 / 17)
100 / 73
(38 / 23)
110 / 81
(43 / 27)
116 / 88
(47 / 31)
115 / 86
(46 / 30)
106 / 76
(41 / 24)
93 / 62
(34 / 17)
77 / 48
(25 / 9)
65 / 38
(18 / 3)
77
(25)
Eureka[6] 56 / 41
(13 / 5)
56 / 42
(13 / 6)
57 / 43
(14 / 6)
58 / 44
(14 / 7)
60 / 48
(16 / 9)
62 / 50
(17 / 10)
63 / 52
(17 / 11)
64 / 53
(18 / 12)
64 / 50
(18 / 10)
62 / 47
(17 / 8)
58 / 44
(14 / 7)
55 / 41
(13 / 5)
53
(12)
Fresno[7] 55 / 38
(13 / 3)
62 / 42
(17 / 6)
68 / 46
(20 / 8)
75 / 49
(24 / 9)
84 / 56
(29 / 13)
92 / 62
(33 / 17)
98 / 68
(37 / 20)
97 / 66
(36 / 19)
91 / 62
(33 / 17)
80 / 53
(27 / 12)
65 / 43
(18 / 6)
55 / 38
(13 / 3)
64
(18)
Los Angeles[8] 68 / 48
(20 / 9)
69 / 49
(21 / 9)
70 / 51
(21 / 11)
73 / 54
(23 / 12)
74 / 57
(23 / 14)
78 / 60
(26 / 16)
83 / 64
(28 / 18)
84 / 64
(29 / 18)
83 / 63
(28 / 17)
78 / 59
(26 / 15)
73 / 52
(23 / 11)
68 / 48
(20 / 9)
65
(18)
Needles[9] 65 / 44
(18 / 7)
70 / 47
(21 / 8)
77 / 52
(25 / 11)
85 / 59
(29 / 15)
95 / 68
(35 / 20)
104 / 77
(40 / 25)
109 / 84
(43 / 29)
107 / 83
(42 / 28)
100 / 74
(38 / 23)
88 / 62
(31 / 17)
73 / 50
(23 / 10)
63 / 42
(17 / 6)
74
(23)
Redding[10] 55 / 36
(13 / 2)
60 / 39
(16 / 4)
64 / 43
(18 / 6)
70 / 46
(21 / 8)
81 / 54
(27 / 12)
90 / 62
(32 / 17)
98 / 66
(37 / 19)
97 / 63
(36 / 17)
90 / 58
(32 / 14)
78 / 49
(26 / 9)
62 / 41
(17 / 5)
54 / 36
(12 / 2)
62
(17)
Riverside[11] 69 / 43
(21 / 6)
70 / 45
(21 / 7)
73 / 46
(23 / 8)
78 / 50
(26 / 10)
82 / 55
(28 / 13)
89 / 59
(32 / 15)
95 / 64
(35 / 18)
96 / 64
(36 / 18)
92 / 61
(33 / 16)
83 / 55
(28 / 13)
75 / 46
(24 / 8)
68 / 42
(20 / 6)
67
(19)
Sacramento[12] 54 / 39
(12 / 4)
60 / 41
(16 / 5)
65 / 44
(18 / 7)
71 / 46
(22 / 8)
80 / 51
(27 / 11)
87 / 56
(31 / 13)
92 / 58
(33 / 14)
91 / 58
(33 / 14)
87 / 56
(31 / 13)
78 / 50
(26 / 10)
64 / 43
(18 / 6)
54 / 38
(12 / 3)
61
(16)
San Diego[13] 65 / 49
(18 / 9)
65 / 51
(18 / 11)
66 / 53
(19 / 12)
68 / 56
(20 / 13)
68 / 59
(20 / 15)
71 / 62
(22 / 17)
75 / 65
(24 / 18)
76 / 67
(24 / 19)
76 / 65
(24 / 18)
73 / 61
(23 / 16)
69 / 54
(21 / 12)
65 / 48
(18 / 9)
64
(18)
San
Francisco
[14]
57 / 46
(14 / 8)
60 / 48
(16 / 9)
62 / 48
(17 / 9)
63 / 49
(17 / 9)
64 / 51
(18 / 11)
66 / 53
(19 / 12)
66 / 54
(19 / 12)
68 / 55
(20 / 13)
70 / 55
(21 / 13)
69 / 54
(21 / 12)
63 / 50
(17 / 10)
57 / 46
(14 / 8)
57
(14)
San Jose[15] 58 / 42
(14 / 6)
62 / 45
(17 / 7)
66 / 47
(19 / 8)
69 / 49
(21 / 9)
74 / 52
(23 / 11)
79 / 56
(26 / 13)
82 / 58
(28 / 14)
82 / 58
(28 / 14)
80 / 57
(27 / 14)
74 / 52
(23 / 11)
64 / 46
(18 / 8)
58 / 42
(14 / 6)
61
(16)
Santa Rosa[16] 59 / 39
(15 / 4)
63 / 41
(17 / 5)
67 / 43
(19 / 6)
70 / 45
(21 / 7)
74 / 48
(23 / 9)
80 / 52
(27 / 11)
82 / 52
(28 / 11)
83 / 53
(28 / 12)
83 / 52
(28 / 11)
78 / 48
(26 / 9)
67 / 43
(19 / 6)
59 / 39
(15 / 4)
59
(15)
South Lake
Tahoe
[17]
43 / 16
(6 / −9)
44 / 18
(7 / −8)
48 / 22
(9 / −6)
54 / 27
(12 / −3)
64 / 32
(18 / 0)
72 / 37
(22 / 3)
81 / 41
(27 / 5)
80 / 40
(27 / 4)
74 / 34
(23 / 1)
63 / 28
(17 / −2)
50 / 22
(10 / −6)
43 / 16
(6 / −9)
44
(7)

Minnesota

Average Temperatures in Minnesota in °Fahrenheit (°Celsius), 1971–2000
Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Annual
Alexandria[18] 8 (−13) 15 (−9) 27 (−3) 43 (6) 56 (13) 65 (18) 70 (21) 68 (20) 58 (14) 45 (7) 28 (−2) 14 (−10) 41 (5)
Brainerd[19] 6 (−14) 13 (−11) 26 (−3) 42 (6) 56 (13) 64 (18) 69 (21) 66 (19) 56 (13) 44 (7) 28 (−2) 13 (−11) 40 (4)
Duluth[20] 10 (−12) 17 (−8) 26 (−3) 39 (4) 48 (9) 58 (14) 66 (19) 65 (18) 56 (13) 45 (7) 31 (−1) 17 (−8) 40 (4)
Grand Marais[21] 14 (−10) 19 (−7) 28 (−2) 38 (3) 47 (8) 53 (12) 61 (16) 63 (17) 55 (13) 45 (7) 32 (0) 19 (−7) 39 (4)
International Falls[22] 3 (−16) 11 (−12) 24 (−4) 39 (4) 53 (12) 62 (17) 66 (19) 64 (18) 53 (12) 42 (6) 24 (−4) 9 (−13) 32 (0)
Redwood Falls[23] 13 (−11) 20 (−7) 32 (0) 47 (8) 60 (16) 70 (21) 74 (23) 71 (22) 62 (17) 49 (9) 32 (0) 18 (−8) 46 (8)
Thief River Falls[24] 3 (−16) 11 (−12) 24 (−4) 42 (6) 56 (13) 64 (18) 69 (21) 67 (19) 56 (13) 44 (7) 24 (−4) 9 (−13) 39 (4)
Twin Cities[25] 13 (−11) 20 (−7) 32 (0) 47 (8) 59 (15) 68 (20) 73 (23) 71 (22) 61 (16) 49 (9) 32 (0) 19 (−7) 45 (7)
Winona[26] 18 (−8) 24 (−4) 36 (2) 50 (10) 62 (17) 71 (22) 76 (24) 73 (23) 64 (18) 52 (11) 32 (0) 23 (−5) 49 (9)
Worthington[27] 11 (−12) 18 (−8) 29 (−2) 44 (7) 57 (14) 67 (19) 71 (22) 68 (20) 59 (15) 47 (8) 30 (−1) 17 (−8) 43 (6)

Show function

−90 −89 −88 −87 −86 −85 −84 −83 −82 −81
−80 −79 −78 −77 −76 −75 −74 −73 −72 −71
−70 −69 −68 −67 −66 −65 −64 −63 −62 −61
−60 −59 −58 −57 −56 −55 −54 −53 −52 −51
−50 −49 −48 −47 −46 −45 −44 −43 −42 −41
−40 −39 −38 −37 −36 −35 −34 −33 −32 −31
−30 −29 −28 −27 −26 −25 −24 −23 −22 −21
−20 −19 −18 −17 −16 −15 −14 −13 −12 −11
−10 −9 −8 −7 −6 −5 −4 −3 −2 −1
0 1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19
20 21 22 23 24 25 26 27 28 29
30 31 32 33 34 35 36 37 38 39
40 41 42 43 44 45 46 47 48 49
50 51 52 53 54 55 56 57 58 59

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  18. Ross, Douglas (1971–2000). "Daily Normals for Alexandria, Minnesota". NCDC. Retrieved 2007-06-07.
  19. Ross, Douglas (1971–2000). "Daily Normals for Brainerd, Minnesota". NCDC. Retrieved 2007-12-27.
  20. Ross, Douglas (1971–2000). "Daily Normals for Duluth, Minnesota". NCDC. Retrieved 2007-06-07.
  21. Ross, Douglas (1971–2000). "Daily Normals for Grand Marais, Minnesota". NCDC. Retrieved 2007-12-27.
  22. Ross, Douglas (1971–2000). "Daily Normals for International Falls, Minnesota". NCDC. Retrieved 2007-06-07.
  23. Ross, Douglas (1971–2000). "Daily Normals for Redwood Falls, Minnesota". NCDC. Retrieved 2007-06-07.
  24. Ross, Douglas (1971–2000). "Daily Normals for Thief River Falls, Minnesota". NCDC. Retrieved 2007-06-07.
  25. Ross, Douglas (1971–2000). "Daily Normals for the Twin Cities". NCDC. Retrieved 2007-06-07.
  26. Ross, Douglas (1971–2000). "Daily Normals for Winona, Minnesota". NCDC. Retrieved 2007-06-07.
  27. Ross, Douglas (1971–2000). "Daily Normals for Worthington, Minnesota". NCDC. Retrieved 2007-06-07.
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		error('Please provide the number of values and a unit in the input parameter')
	else
		length = tonumber(string.match(inputParameter, "(%d+)")) -- Find digits in the input parameter.
		inputUnit = string.match(inputParameter, "([CF])") -- C or F
		if string.find(inputParameter, "[^CF%d%s]") then
			addMessage('There are extraneous characters in the <span style="background-color: #EEE; font-family: monospace;">output</span> parameter.')
		end
	end
	
	if inputUnit == "C" then
		outputUnit = "F"
	elseif inputUnit == "F" then
		outputUnit = "C"
	else
		error ("Please provide an input unit in the input parameter: F for Fahrenheit or C for Celsius", 0)
	end
	
	if length == nil then
		error ("getFormat has not found a length value in the input parameter")
	end
	
	if outputParameter == nil then
		addMessage('No output format has been provided in the <span style="background-color: #EEE; font-family: monospace;">output</span> parameter.')
	else
		cellFormat = {}
		local n = 1
		for unit in outputParameter:gmatch("[CF]") do
			cellFormat[n] = unit
			n = n + 1
			if n > 2 then
				break
			end
		end
		local function setFormat(key, formatVariable, formatValue1, formatValue2)
			if string.find(outputParameter, key) then
				cellFormat[formatVariable] = formatValue1
			else
				cellFormat[formatVariable] = formatValue2
			end
		end
		if cellFormat[1] then
			cellFormat.first = cellFormat[1]
		else
			error('C or F not found in output parameter')
		end
		if cellFormat[2] == nil then
			cellFormat["convertUnits"] = "no"
		else
			if cellFormat[2] == cellFormat[1] then
				error('There should not be two of the same unit name in the output parameter.')
			else
				cellFormat["convertUnits"] = "yes"
			end
		end
		setFormat("unit", "unitNames", "yes", "no")
		setFormat("no ?color", "color", "no", "yes")
		setFormat("sort", "sortable", "yes", "no")
		setFormat("full ?size", "smallFont", "no", "yes")
		setFormat("no ?brackets", "brackets", "no", "yes")
		setFormat("round", "decimals", "0", "")
		if string.find(outputParameter, "line break") then
			cellFormat["lineBreak"] = "yes"
		elseif string.find(outputParameter, "one line") then
			cellFormat["lineBreak"] = "no"
		else
			cellFormat["lineBreak"] = "auto"
		end
		if string.find(outputParameter, "one line") and string.find(outputParameter, "line break") then
			error('Place either "one line" or "line break" in the output parameter, not both')
		end
	end
	if frame.args.palette == nil then
		palette = "cool2avg"
	else
		palette = frame.args.palette
	end
	
	if frame.args.messages == "show" then
		show = true
	else
		show = false
	end
	
	return length, inputUnit, outputUnit, cellFormat, show
end

-- Number and string-handling functions
local function checkForNumber(value)
	return type(tonumber(value)) == "number"
end

local function checkForString(string)
	string = tostring(string)
	return string ~= "" and string ~= nil
end

local function round(value, decimals)
	value = tonumber(value)
	if type(value) == "number" then
		local string = string.format("%." .. decimals .. "f", value)
		return string
	elseif value == nil then
		value = "nil"
		addMessage("Format was asked to operate on " .. value .. ", which cannot be converted to a number.", 2)
		return ""
	end
end

local function convert(value, decimals, unit) -- Unit is the unit being converted from. It defaults to inputUnit.
	if not unit then
		unit = inputUnit
	end
	if checkForNumber(value) then
		local value = tonumber(value)
		if unit == "C" then
			addMessage(value .. " " .. degree .. unit .. " was converted.")
			return round(value * 9/5 + 32, decimals)
		elseif unit == "F" then
			addMessage(value .. " " .. degree .. unit .. " was converted.")
			return round((value - 32) * 5/9, decimals)
		else
			error("Input unit not recognized", 2)
		end
	else
		return "" -- Setting result to empty string if value is not a number avoids concatenation errors.
	end
end

-- Input parsing
local function makeArray(parameter, array, frame)
	getFormat(frame)
	local array = {}
	local n = 1
	for number in parameter:gmatch("%-?%d+%.?%d?") do
		local number = number
		if n == 1 then
			local decimals = number:match("%.(%d+)")
			if decimals == nil then
				precision = "0"
			else
				precision = #decimals
			end
		end
		table.insert(array, n, number)
		n = n + 1
		if n > length then
			break
		end
	end
	if not array[length] then
		addMessage('There are not ' .. length .. ' values in the ' .. parameter .. ' parameter.')
	end
	return array, precision
end

local a, b, c

local function makeArrays(frame)
	getFormat(frame)
	local parameter_a = frame.args.a
	local parameter_b = frame.args.b
	local parameter_c = frame.args.c
	if parameter_a then
		a = makeArray(parameter_a, a, frame)
	else
		error('Please provide a set of numbers in parameter a')
	end
	if parameter_b then
		b = makeArray(parameter_b, b, frame)
	else
		addMessage('There is no content in parameter <span style="background-color: #EEE; font-family: monospace;">b</span>.')
	end
	if parameter_c then
		c = makeArray(parameter_c, c, frame)
	else
		addMessage('There is no content in parameter <span style="background-color: #EEE; font-family: monospace;">c</span>.')
	end
	return a, b, c
end

-- Color generation

local palettes = {
	-- The first three arrays in each palette defines background color using a table of four numbers,
	-- say { 11, 22, 33, 44 } (values in °C).
	-- That means the color is 0 below 11 and above 44, and is 255 from 22 to 33.
	-- The color rises from 0 to 255 between 11 and 22, and falls between 33 and 44.
	cool = {
		{ -42.75,   4.47, 41.5, 60   },
		{ -42.75,   4.47,  4.5, 41.5 },
		{ -90   , -42.78,  4.5, 23   },
		white = { -23.3, 37.8 },
	},
	cool2 = {
		{ -42.75,   4.5 , 41.5, 56   },
		{ -42.75,   4.5 ,  4.5, 41.5 },
		{ -90   , -42.78,  4.5, 23   },
		white = { -23.3, 35 },
	},
	cool2avg = {
		{ -38,   4.5, 25  , 45   },
		{ -38,   4.5,  4.5, 30   },
		{ -70, -38  ,  4.5, 23   },
		white = { -23.3, 25 },
	},
}

local function temperatureColor(palette, value, outRGB)
	--[[ Return style for a table cell based on the given value which
		should be a temperature in °C. ]]
	local backgroundColor, textColor
	value = tonumber(value)
	if value == nil then
		backgroundColor, textColor = 'FFF', '000'
		addMessage('Value supplied to <span style="background-color: #EEE; font-family: monospace;">temperatureColor</span> is not recognized.')
	else
		local min, max = unpack(palette.white or { -23, 35 })
		if value < min or value >= max then
			textColor = 'FFF'
		else
			textColor = '' -- This assumes that black text color is the default for most readers.
		end

		local backgroundRGB = outRGB or {}
		for i, v in ipairs(palette) do
			local a, b, c, d = unpack(v)
			if value <= a then
				backgroundRGB[i] = 0
			elseif value < b then
				backgroundRGB[i] = (value - a) * 255 / (b - a)
			elseif value <= c then
				backgroundRGB[i] = 255
			elseif value < d then
				backgroundRGB[i] = 255 - ( (value - c) * 255 / (d - c) )
			else
				backgroundRGB[i] = 0
			end
		end
		backgroundColor = string.format('%02X%02X%02X', backgroundRGB[1], backgroundRGB[2], backgroundRGB[3])
	end
	if textColor == "" then
		return backgroundColor
	else
		return backgroundColor, textColor
	end
end

local function colorCSS(backgroundColor, textColor)
	if backgroundColor and textColor then
		return 'background: #' .. backgroundColor .. '; color: #' .. textColor .. ';'
	elseif backgroundColor then
		return 'background: #' .. backgroundColor .. ';'
	else
		return ''
	end
end

local function temperatureColorCSS(palette, value, outRGB)
	return colorCSS(temperatureColor(palette, value, outRGB))
end

local function temperatureCSS(value, unit, palette)
	local palette = palettes[palette] or palettes.cool
	local value = tonumber(value)
	if value == nil then
		error('The function <span style="background-color: #EEE; font-family: monospace;">temperatureCSS</span> is receiving a nil value')
	else
		if unit == 'C' then
			return colorCSS(temperatureColor(palette, value))
		elseif unit == 'F' then
			return colorCSS(temperatureColor(palette, convert(value, decimals, 'F')))
		else
			unitError(unit or "nil")
		end
	end
end

local function styleAttribute(palette, value, outRGB)
	local fontSize = "font-size: 85%;"
	local color = temperatureColorCSS(palette, value, outRGB)
	return 'style=\"' .. color .. ' ' .. fontSize .. '\"'
end

local style_attribute = styleAttribute

function p.temperatureStyle(frame) -- used by Template:Average temperature table/color
	local palette = palettes[frame.args.palette] or palettes.cool
	local unit = frame.args.unit or 'C'
	local value = tonumber(frame.args[1])
	if unit == 'C' then
		return styleAttribute(palette, value)
	elseif unit == 'F' then
		return styleAttribute(palette, convert(value, 1, 'F'))
	else
		unitError(unit)
	end
end

p.temperature_style = p.temperatureStyle

--[[ ==== Cell, row, table generation ==== ]]
local outputFormats = {
	high_low_average_F =
		{ first = "F",
		convertUnits = "yes",
		unitNames = "no",
		color = "yes",
		smallFont = "yes",
		sortable = "yes",
		decimals = "0",
		brackets = "yes",
		lineBreak = "auto", },
	high_low_average_C =
		{ first = "C",
		convertUnits = "yes",
		unitNames = "no",
		color = "yes",
		smallFont = "yes",
		sortable = "yes",
		decimals = "0",
		brackets = "yes",
		lineBreak = "auto", },
	high_low_F =
		{ first = "F",
		convertUnits = "yes",
		unitNames = "no",
		color = "no",
		smallFont = "yes",
		sortable = "no",
		decimals = "",
		brackets = "yes",
		lineBreak = "auto", },
	high_low_C =
		{ first = "C",
		convertUnits = "yes",
		unitNames = "no",
		color = "no",
		smallFont = "yes",
		sortable = "no",
		decimals = "0",
		brackets = "yes",
		lineBreak = "auto", },
	average_F =
		{ first = "F",
		convertUnits = "yes",
		unitNames = "no",
		color = "yes",
		smallFont = "yes",
		sortable = "no",
		decimals = "0",
		brackets = "yes",
		lineBreak = "auto", },
	average_C =
		{ first = "C",
		convertUnits = "yes",
		unitNames = "no",
		color = "yes",
		smallFont = "yes",
		sortable = "no",
		decimals = "0",
		brackets = "yes",
		lineBreak = "auto", },
	}

local outputFormat

local function addUnitNames(value, yesOrNo, unit)
	if not unit then unit = inputUnit end
	-- Don't add a unit name to an empty string
	value = yesOrNo == "yes" and checkForString(value) and value .. "&nbsp;" .. degree .. unit or value
	return value
end

local function ifYes(parameter, realization1, realization2)
	local result
	if realization1 then
		if realization2 then
			result = parameter == "yes" and { realization1, realization2 } or { "", "" }
		else
			result = parameter == "yes" and realization1 or ""
		end
	else
		result = ""
		addMessage('<span style="background-color: #EEE; font-family: monospace;">ifYes</span> needs at least one realization')
	end
	return result
end

local function makeCell(outputFormat, a, b, c)
	local cell, cellContent = "", ""
	local colorCSS, otherCSS, titleAttribute, sortkey, attributeSeparator, convertedUnitsSeparator = "", "", "", "", "", "", ""
	local styleAttribute, highLowSeparator, brackets, values, convertedUnits = {"", ""}, {"", ""}, {"", ""}, {"", ""}, {"", ""}
	-- Distinguish styleAttribute variable from styleAttribute function above.
	decimals = ( checkForNumber(outputFormat.decimals) and outputFormat.decimals ) or precision
		--[[ Precision is the number of decimals in the first number of the last array.
			This may be a problem for data from Weatherbase,
			which seems to inappropriately remove .0 from numbers that have it. ]]
	
	if checkForNumber(b) and checkForNumber(a) then
		values, highLowSeparator = { round(a, decimals), round(b, decimals) }, { thinSpace .. "/" .. thinSpace, ifYes(outputFormat.convertUnits, thinSpace .. "/" .. thinSpace) }
	elseif checkForNumber(a) then
		values = { round(a, decimals), "" }
	elseif checkForNumber(c) then
		values = { round(c, decimals), "" }
	end
	if outputFormat.first == inputUnit then
		if outputFormat.convertUnits == "yes" then
			convertedUnits = { addUnitNames(convert(values[1], decimals), outputFormat.unitNames, outputUnit), addUnitNames(convert(values[2], decimals), outputFormat.unitNames, outputUnit) }
		end
		values = { addUnitNames(values[1], outputFormat.unitNames), addUnitNames(values[2], outputFormat.unitNames) }
	elseif outputFormat.first == "C" or outputFormat.first == "F" then
		if outputFormat.convertUnits == "yes" then
			convertedUnits = { addUnitNames(values[1]), addUnitNames(values[2], outputFormat.unitNames) }
		end
		values = { addUnitNames(convert(values[1], decimals), outputUnit), addUnitNames(convert(values[2], decimals), outputFormat.unitNames, outputUnit) }
	else
		if outputFormat.first == nil then
			outputFormat.first = "nil"
		end
		addMessage('<span style="background-color: #EEE; font-family: monospace;">' .. outputFormat.first .. '</span>, the value for <span style="background-color: #EEE; font-family: monospace;">first</span> in <span style="background-color: #EEE; font-family: monospace;">outputFormat</span> is not recognized.')
	end
	--[[
		Regarding line breaks:
		If there are two values, there will be at least three characters: 9/1.
		If there is one decimal, numbers will be three to five characters long
		and there will be 3 to 10 characters total even without unit conversion:
			1.1, 116.5/88.0.
		If there are units, that adds three characters per number: 25 °C/20 °C.
		In each of these cases, a line break is needed so that table cells are not too wide;
		even more so when more than one of these things are true.
		]]
	if outputFormat.convertUnits == "yes" then
		brackets = outputFormat.brackets == "yes" and { "(", ")" } or { "", "" }
		if outputFormat.lineBreak == "auto" then
			convertedUnitsSeparator = ( checkForString(values[2]) or decimals ~= "0" or outputFormat.showUnits == "yes" ) and "<br>" or "&nbsp;"
		else
			convertedUnitsSeparator = outputFormat.lineBreak == "yes" and "<br>" or outputFormat.lineBreak == "no" and "&nbsp;" or error('Value for lineBreak not recognized')
		end
	end
	
	cellContent = values[1] .. highLowSeparator[1] .. values[2] .. convertedUnitsSeparator .. brackets[1] .. convertedUnits[1] .. highLowSeparator[2] .. convertedUnits[2] .. brackets[2]
	
	if checkForNumber(c) then
		colorCSS = outputFormat.color == "yes" and temperatureCSS(c, inputUnit, palette) or ""
		if checkForNumber(b) and checkForNumber(a) then
			local attributeValue = outputFormat.first == inputUnit and c or convert(c, decimals)
			sortkey = outputFormat.sortable == "yes" and " data-sort-value=\"" .. attributeValue .. "\"" or ""
			titleAttribute = " title=\"Average temperature: " .. attributeValue .. " " .. degree .. outputFormat.first .. "\""
		end
	elseif checkForNumber(b) then
		colorCSS = ""
	elseif checkForNumber(a) then
		colorCSS = outputFormat.color == "yes" and temperatureCSS(a, inputUnit, palette) or ""
	else
		addMessage('Neither a nor b nor c are strings.')
	end
	otherCSS = outputFormat.smallFont == "yes" and "font-size: 85%;" or ""
	if checkForString(colorCSS) or checkForString(otherCSS) then
		styleAttribute = { "style=\"", "\"" }
	end
	
	if checkForString(otherCSS) or checkForString(colorCSS) or checkForString(titleAttribute) or checkForString(sortkey) then
		attributeSeparator = " | "
	end
	cell = "\n| " .. styleAttribute[1] .. colorCSS .. otherCSS .. styleAttribute[2] .. titleAttribute .. sortkey .. attributeSeparator .. cellContent
	return cell
end

function p.makeRow(frame)
	makeArrays(frame)
	local output = ""
	if frame.args[1] then
		output = "\n|-"
		output = output .. "\n! " .. frame.args[1]
		if frame.args[2] then
			output = output .. " !! " .. frame.args[2]
		end
	end
	if cellFormat then
		outputFormat = cellFormat
	end
	if a and b and c then
		for i = 1, length do
			if not outputFormat then
				outputFormat = outputFormats.high_low_average_F
			end
			output = output .. makeCell(outputFormat, a[i], b[i], c[i])
		end
	elseif a and b then
		for i = 1, length do
			if not outputFormat then
				outputFormat = outputFormats.high_low_F
			end
			output = output .. makeCell(outputFormat, a[i], b[i])
		end
	elseif a then
		for i = 1, length do
			if not outputFormat then
				outputFormat = outputFormats.average_F
			end
			output = output .. makeCell(outputFormat, a[i])
		end
	end
	output = mw.ustring.gsub(output, "([%p%s])-(%d)", "%1" .. minus .. "%2")
	return output
end

function p.makeTable(frame)
	makeArrays(frame)
	local output = "{| class=\"wikitable center nowrap\""
	if cellFormat then
		outputFormat = cellFormat
	end
	if a and b and c then
		for i = 1, length do
			if not outputFormat then
				outputFormat = outputFormats.high_low_average_F
			end
			output = output .. makeCell(outputFormat, a[i], b[i], c[i])
		end
	elseif a and b then
		for i = 1, length do
			if not outputFormat then
				outputFormat = outputFormats.high_low_F
			end
			output = output .. makeCell(outputFormat, a[i], b[i])
		end
	elseif a then
		for i = 1, length do
			if not outputFormat then
				outputFormat = outputFormats.average_F
			end
			output = output .. makeCell(outputFormat, a[i])
		end
	end
	output = mw.ustring.gsub(output, "([%p%s])-(%d)", "%1" .. minus .. "%2")
		--[[  Replaces hyphens that have a punctuation or space character before them and a number after them,
				making sure that hyphens in "data-sort-type" are not replaced with minuses.
				If Lua had (?<=), a capture would not be necessary.  ]]
	output = output .. "\n|}"
	if show then
		output = output .. "\n\n<span style=\"color: red; font-size: 80%; line-height: 100%;\">" .. message .. "</span>"
	end
	return output
end



local chart = [[
{{Graph:Chart
|width=600
|height=180
|xAxisTitle=Celsius
|yAxisTitle=__COLOR
|type=line
|x=__XVALUES
|y=__YVALUES
|colors=__COLOR
}}
]]

function p.show(frame)
	-- For testing, return wikitext to show graphs of how the red/green/blue colors
	-- vary with temperature, and a table of the resulting colors.
	local function collection()
		-- Return a table to hold items.
		return {
			n = 0,
			add = function (self, item)
				self.n = self.n + 1
				self[self.n] = item
			end,
			join = function (self, sep)
				return table.concat(self, sep)
			end,
		}
	end
	local function make_chart(result, color, xvalues, yvalues)
		result:add('\n')
		result:add(frame:preprocess((chart:gsub('__[A-Z]+', {
			__COLOR = color,
			__XVALUES = xvalues:join(','),
			__YVALUES = yvalues:join(','),
		}))))
	end
	local function with_minus(value)
		if value < 0 then
			return minus .. tostring(-value)
		end
		return tostring(value)
	end
	local args = frame.args
	local first = args[1] or -90
	local last = args[2] or 59
	local palette = palettes[args.palette] or palettes.cool
	local xvals, reds, greens, blues = collection(), collection(), collection(), collection()
	local wikitext = collection()
	wikitext:add('{| class="wikitable"\n|-\n')
	local columns = 0
	for celsius = first, last do
		local backgroundRGB = {}
		local style = styleAttribute(palette, celsius, backgroundRGB)
		local R = math.floor(backgroundRGB[1])
		local G = math.floor(backgroundRGB[2])
		local B = math.floor(backgroundRGB[3])
		xvals:add(celsius)
		reds:add(R)
		greens:add(G)
		blues:add(B)
		wikitext:add('| ' .. style .. ' | ' .. with_minus(celsius) .. '\n')
		columns = columns + 1
		if columns >= 10 then
			columns = 0
			wikitext:add('|-\n')
		end
	end
	wikitext:add('|}\n')
	make_chart(wikitext, 'Red', xvals, reds)
	make_chart(wikitext, 'Green', xvals, greens)
	make_chart(wikitext, 'Blue', xvals, blues)
	return wikitext:join()
end

return p, palettes