Module:Sandbox/Ita140188/chart2

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500
1,000
1,500
2,000
2,500
3,000
1997
2000
2005
2010
2015
2018
Nuclear power generation (TWh)[1]


before (Module:Chart) after (this module)
25,000
50,000
75,000
100,000
125,000
150,000
Before
During
After
Post mortem
Blah
Bloh
  •   Apple
  •   Banana
  •   Orange

Page Template:TemplateStyles sandbox/Ita140188/styles.css has no content.

 
150,000
 
125,000
 
100,000
 
75,000
 
50,000
 
25,000
Before
During
After
Post mortem
Blah
Bloh
  •   Apple
  •   Banana
  •   Orange


before (Module:Chart) after (this module)
100
200
300
400
500
600
700
2000
2005
2010
2015
  •   Hydro
  •   Wind
  •   Wood
  •   Other biomass
  •   Solar
  •   Geothermal
Renewable electricity generation 1998-2017
Page Template:TemplateStyles sandbox/Ita140188/styles.css has no content.
 
700
 
600
 
500
 
400
 
300
 
200
 
100
2000
2005
2010
2015
  •   Hydro
  •   Wind
  •   Wood
  •   Other biomass
  •   Solar
  •   Geothermal
Renewable electricity generation 1998-2017

Integers

Old chart module:
2.5
5
7.5
10
12.5
15
  •   leg1
  •   leg2
  •   leg3
  •   leg4
  •   leg5
  •   leg6
new module:

Page Template:TemplateStyles sandbox/Ita140188/styles.css has no content.

 
15
 
10
 
5
  •   leg1
  •   leg2
  •   leg3
  •   leg4
  •   leg5
  •   leg6

Rockets

Rocket configurations

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20
 
15
 
10
 
5

Launch sites

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20
 
15
 
10
 
5
2010
'11
'12
'13
'14
'15
'16
'17
'18

Launch outcomes

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20
 
15
 
10
 
5
2010
'11
'12
'13
'14
'15
'16
'17
'18
  •   Loss before launch
  •   Loss during flight
  •   Partial failure
  •   Success

Booster landings

Page Template:TemplateStyles sandbox/Ita140188/styles.css has no content.

 
20
 
15
 
10
 
5
2010
'11
'12
'13
'14
'15
'16
'17
'18
  •   Ground pad failure
  •   Drone ship failure
  •   Ocean failure
  •   Parachutes failure
  •   Ground pad success
  •   Drone ship success
  •   Ocean touchdown
  •   No attempt




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60
 
50
 
40
 
30
 
20
 
10
Before
During
After
Post mortem

Page Template:TemplateStyles sandbox/Ita140188/styles.css has no content.

 
100
 
90
 
80
 
70
 
60
 
50
 
40
 
30
 
20
 
10
Transparent.png
Transparent.png
Transparent.png
tooltip 1
tooltip 2
tooltip 3
Before
During
After
very very long description just as an example
  •   Apple
  •   Banana


Page Template:TemplateStyles sandbox/Ita140188/styles.css has no content.

 
60
 
50
 
40
 
30
 
20
 
10
Transparent.png
Transparent.png
Transparent.png
tooltip 1
tooltip 2
tooltip 3
Transparent.png
Transparent.png
Transparent.png
Before
During
After
Post mortem
  •   Apple
  •   Banana
  •   Orange

Page Template:TemplateStyles sandbox/Ita140188/styles.css has no content.

 
150
 
125
 
100
 
75
 
50
 
25
Before
During
After
Post mortem
  •   Apple
  •   Banana
  •   Orange


Page Template:TemplateStyles sandbox/Ita140188/styles.css has no content.

 
150
 
125
 
100
 
75
 
50
 
25
1920
1930
1940
1950
1960
1970
1990
2000
2010
  •   Alabama
  •   Alaska
  •   Arizona
  •   Arkansas
  •   California
  •   Colorado
  •   Connecticut
  •   Delaware
  •   Florida
  •   Georgia
  •   Hawaii
  •   Idaho
  •   Illinois
  •   Indiana
  •   Iowa
  •   Kansas
  •   Kentucky
  •   Louisiana
  •   Maine
  •   Maryland
  •   Massachusetts

Test case for numerous narrow columns

Charting the history of rocket launches at Timeline of spaceflight.

Legacy Chart module
50
100
150
200
1957
1960
1965
1970
1975
1980
1985
1990
1995
2000
2005
2010
2015
2020
  •   Failure
  •   Partial failure
  •   Success
  •   Planned
Updated module

Page Template:TemplateStyles sandbox/Ita140188/styles.css has no content.

 
200
 
150
 
100
 
50
1957
1960
1965
1970
1975
1980
1985
1990
1995
2000
2005
2010
2015
2020
  •   Failure
  •   Partial failure
  •   Success
  •   Planned

Test case for negative values (still not working!!)

Charting the GDP growth of Russia for the Economy of Russia article.

Legacy Chart module
1
2
3
4
5
6
7
8
9
10
'99
2000
2002
2004
2006
2008
2010
2012
2014
2016
'17
  •   Growth
  •   Recession
Updated module

Page Template:TemplateStyles sandbox/Ita140188/styles.css has no content.

 
10
 
9
 
8
 
7
 
6
 
5
 
4
 
3
 
2
 
1
'99
2000
2002
2004
2006
2008
2010
2012
2014
2016
'17
  •   Growth
  •   Recession

Page Template:TemplateStyles sandbox/Ita140188/styles.css has no content.

 
10
 
9
 
8
 
7
 
6
 
5
 
4
 
3
 
2
 
1
'99
2000
2002
2004
2006
2008
2010
2012
2014
2016
'17

Drawing Pie charts: "pie chart"

Parameters

parameter name what it does
delimiter string to delimit multiple values when given. default to colon ( : ). normally you do not want to touch this, it's provided for the off-chance you'll want to use colon as part of one of the parameters.
radius number. The radius of the pie in pixels
slices Tuples, in parenthesis. Use delimiter inside the tuple:
( Value1 : Name1 : Color1 : Link1  ) ( Value2 : Name2 : Color2 : Link2 ) ...

The values are numbers. The numbers can be integers or decimal fractions, or using the scientific notation: 7.24e6, 7,240,000, or 7240000.00 are all acceptable for 7 Million and 240 thousands.

Names are strings. Colors are optional. you can use any Web colors, such as "red" or "#FF0000". Up to 26 default colors are defined, but if your pie has more than 26 slices, you must define the colors of slice #27 and up. Links can be external or internal links, including linking to internal anchors and paragraphs in the same article, like so: [[Article|Tooltip]] for internal link, [[#Paragraph name|Tooltip]] for linking to an anchor in same article, or [http://example.org Tooltip] for external link.

slice n alternative syntax to "slices". n is the slice number, beginning with 1. make sure not to skip: if you define "slice 1", "slice 2", "slice 4", "slice 5"..., skipping slice 3, only the first two slices will be shown. this syntax is incompatible with "slices", i.e., they should not be used in conjunction in the same invocation. Using both "slices" and "slice n" in the same invocation will cause unpredictable results. The value is like a single "tuple" as explained above, but without the parenthesis:
 | slice 1 = Value1 : Name1 : Color1 : Link1
 | slice 2 = Value2 : Name2 : Color2 : Link2
 | ...

This syntax allows you to use parenthesis in names, links, and colors.

percent if used, the percentage of each slice will be calculated and added to the legend: so if you have two slices, like so: ( 1 : Younglings ) ( 3 : elders ), and use define "percent", the legends will become "Younglings: 1 (25%)" and "Elders: 3 (75%)", instead of simply "Younglings: 1" and "Elders: 3". Any non-empty value means "yes". To say "no", simply do not supply this parameter at all, or leave the value blank.
units prefix used in the legend. e.g., defining "units prefix=$", values will show as "$500" instead of "500" in the legends
units suffix ditto for units suffix. use, e.g. "Kg" so values will show as 88Kg instead of 88 in legend. underscore ("_") are replaced by spaces, to allow a space between the value and the suffix.
hide group legends Setting to true prevents displaying of the group legends under the chart. Any non-empty value means "yes". To say "no", simply do not supply this parameter at all, or leave the value blank.

Examples

Apples: 1,000,000 Tonne (17.2%)Bananas: 2,000,000 Tonne (34.3%)Apricots: 1,440,000 Tonne (24.7%)PearsPineapples: 750,000 Tonne (12.9%)Circle frame.svg
  •   Apples: 1,000,000 Tonne (17.2%)
  •   Bananas: 2,000,000 Tonne (34.3%)
  •   Apricots: 1,440,000 Tonne (24.7%)
  •   Pears: 640,000 Tonne (11.0%)
  •   Pineapples: 750,000 Tonne (12.9%)


Apples: 1,000,000 Tonne (17.2%)Bananas: 2,000,000 Tonne (34.3%)Apricots: 1,440,000 Tonne (24.7%)PearsPineapples: 750,000 Tonne (12.9%)Circle frame.svg
  •   Apples: 1,000,000 Tonne (17.2%)
  •   Bananas: 2,000,000 Tonne (34.3%)
  •   Apricots: 1,440,000 Tonne (24.7%)
  •   Pears: 640,000 Tonne (11.0%)
  •   Pineapples: 750,000 Tonne (12.9%)



1: 1 Units (0.2%)7: 7 Units (1.5%)8: 8 Units (1.7%)9: 9 Units (1.9%)10: 10 Units (2.1%)11: 11 Units (2.3%)12: 12 Units (2.5%)13: 13 Units (2.7%)14: 14 Units (2.9%)15: 15 Units (3.2%)16: 16 Units (3.4%)17: 17 Units (3.6%)18: 18 Units (3.8%)19: 19 Units (4.0%)20: 20 Units (4.2%)21: 21 Units (4.4%)22: 22 Units (4.6%)23: 23 Units (4.8%)24: 24 Units (5.0%)25: 25 Units (5.3%)26: 26 Units (5.5%)27: 27 Units (5.7%)28: 28 Units (5.9%)29: 29 Units (6.1%)30: 30 Units (6.3%)31: 31 Units (6.5%)Circle frame.svg
  •   1: 1 Units (0.2%)
  •   7: 7 Units (1.5%)
  •   8: 8 Units (1.7%)
  •   9: 9 Units (1.9%)
  •   10: 10 Units (2.1%)
  •   11: 11 Units (2.3%)
  •   12: 12 Units (2.5%)
  •   13: 13 Units (2.7%)
  •   14: 14 Units (2.9%)
  •   15: 15 Units (3.2%)
  •   16: 16 Units (3.4%)
  •   17: 17 Units (3.6%)
  •   18: 18 Units (3.8%)
  •   19: 19 Units (4.0%)
  •   20: 20 Units (4.2%)
  •   21: 21 Units (4.4%)
  •   22: 22 Units (4.6%)
  •   23: 23 Units (4.8%)
  •   24: 24 Units (5.0%)
  •   25: 25 Units (5.3%)
  •   26: 26 Units (5.5%)
  •   27: 27 Units (5.7%)
  •   28: 28 Units (5.9%)
  •   29: 29 Units (6.1%)
  •   30: 30 Units (6.3%)
  •   31: 31 Units (6.5%)
1: 1 Units (0.2%)7: 7 Units (1.5%)8: 8 Units (1.7%)9: 9 Units (1.9%)10: 10 Units (2.1%)11: 11 Units (2.3%)12: 12 Units (2.5%)13: 13 Units (2.7%)14: 14 Units (2.9%)15: 15 Units (3.2%)16: 16 Units (3.4%)17: 17 Units (3.6%)18: 18 Units (3.8%)19: 19 Units (4.0%)20: 20 Units (4.2%)21: 21 Units (4.4%)22: 22 Units (4.6%)23: 23 Units (4.8%)24: 24 Units (5.0%)25: 25 Units (5.3%)26: 26 Units (5.5%)27: 27 Units (5.7%)28: 28 Units (5.9%)29: 29 Units (6.1%)30: 30 Units (6.3%)31: 31 Units (6.5%)Circle frame.svg
  •   1: 1 Units (0.2%)
  •   7: 7 Units (1.5%)
  •   8: 8 Units (1.7%)
  •   9: 9 Units (1.9%)
  •   10: 10 Units (2.1%)
  •   11: 11 Units (2.3%)
  •   12: 12 Units (2.5%)
  •   13: 13 Units (2.7%)
  •   14: 14 Units (2.9%)
  •   15: 15 Units (3.2%)
  •   16: 16 Units (3.4%)
  •   17: 17 Units (3.6%)
  •   18: 18 Units (3.8%)
  •   19: 19 Units (4.0%)
  •   20: 20 Units (4.2%)
  •   21: 21 Units (4.4%)
  •   22: 22 Units (4.6%)
  •   23: 23 Units (4.8%)
  •   24: 24 Units (5.0%)
  •   25: 25 Units (5.3%)
  •   26: 26 Units (5.5%)
  •   27: 27 Units (5.7%)
  •   28: 28 Units (5.9%)
  •   29: 29 Units (6.1%)
  •   30: 30 Units (6.3%)
  •   31: 31 Units (6.5%)

  1. Cite error: Invalid <ref> tag; no text was provided for refs named pris-supplied
--<source lang=lua>
--[[
    keywords are used for languages: they are the names of the actual
    parameters of the template
]]

local keywords = {
    barChart = 'bar chart',
    pieChart = 'pie chart',
    width = 'width',
    height = 'height',
    stack = 'stack',
    colors = 'colors',
    group = 'group',
    xlegend = 'x legends',
    tooltip = 'tooltip',
    accumulateTooltip = 'tooltip value accumulation',
    links = 'links',
    defcolor = 'default color',
    scalePerGroup = 'scale per group',
    unitsPrefix = 'units prefix',
    unitsSuffix = 'units suffix',
    groupNames = 'group names',
    hideGroupLegends = 'hide group legends',
    optint = 'only integer values',
    slices = 'slices',
    slice = 'slice',
    radius = 'radius',
    percent = 'percent',

} -- here is what you want to translate



local defColors = require "Module:Plotter/DefaultColors"
local hideGroupLegends
local optint

local function nulOrWhitespace( s )
    return not s or mw.text.trim( s ) == ''
end

local function createGroupList( tab, legends, cols )
    if #legends > 1 and not hideGroupLegends then
        table.insert( tab, mw.text.tag( 'div' ) )
        local list = {}
        local spanStyle = "padding:0 1em;background-color:%s;border:1px solid %s;margin-right:1em;-webkit-print-color-adjust:exact;"
        for gi = 1, #legends do
            local span = mw.text.tag( 'span', { style = string.format( spanStyle, cols[gi], cols[gi] ) }, '&nbsp;' ) .. ' '..  legends[gi]
            table.insert( list, mw.text.tag( 'li', {}, span ) )
        end
        table.insert( tab,
            mw.text.tag( 'ul',
                {style="width:100%;list-style:none;-webkit-column-width:12em;-moz-column-width:12em;column-width:12em;"},
                table.concat( list, '\n' )
            )
        )
        table.insert( tab, '</div>' )
    end
end


function pieChart( frame )
    local res, imslices, args = {}, {}, frame.args
    local radius
    local values, colors, names, legends, links = {}, {}, {}, {}, {}
    local delimiter = args.delimiter or ':'
    local lang = mw.getContentLanguage()

    function getArg( s, def, subst, with )
        local result = args[keywords[s]] or def or ''
        if subst and with then result = mw.ustring.gsub( result, subst, with ) end
        return result
    end

    function analyzeParams()
        function addSlice( i, slice )
            local value, name, color, link = unpack( mw.text.split( slice, '%s*' .. delimiter .. '%s*' ) )
            values[i] = tonumber( lang:parseFormattedNumber( value ) )
                or error( string.format( 'Slice %d: "%s", first item("%s") could not be parsed as a number', i, value or '', sliceStr ) )
            colors[i] = not nulOrWhitespace( color ) and color or defColors[i * 2]
            names[i] = name or ''
            links[i] = link
        end
        
        radius = getArg( 'radius', 150 )
        hideGroupLegends = not nulOrWhitespace( args[keywords.hideGroupLegends] )
        local slicesStr = getArg( 'slices' )
        local prefix = getArg( 'unitsPrefix', '', '_', ' ' )
        local suffix = getArg( 'unitsSuffix', '', '_', ' ' )
        local percent = args[keywords.percent]
        local sum = 0
        local i, value = 0
        for slice in mw.ustring.gmatch( slicesStr or '', "%b()" ) do
            i = i + 1
            addSlice( i, mw.ustring.match( slice, '^%(%s*(.-)%s*%)$' ) )
        end
        
        for k, v in pairs(args) do
            local ind = mw.ustring.match( k, '^' .. keywords.slice .. '%s+(%d+)$' )
            if ind then addSlice( tonumber( ind ), v ) end
        end
        
        for _, val in ipairs( values ) do sum = sum + val end
        for i, value in ipairs( values ) do
            local addprec = percent and string.format( ' (%0.1f%%)', value / sum * 100 ) or ''
            legends[i] = mw.ustring.format( '%s: %s%s%s%s', names[i], prefix, lang:formatNum( value ), suffix, addprec )
            links[i] = mw.text.trim( links[i] or mw.ustring.format( '[[#noSuchAnchor|%s]]', legends[i] ) )
        end
    end

    function addRes( ... )
        for _, v in pairs( { ... } ) do
            table.insert( res, v )
        end
    end

    function createImageMap()
        addRes( '{{#tag:imagemap|', 'Image:Circle frame.svg{{!}}' .. ( radius * 2 ) .. 'px' )
        addRes( unpack( imslices ) )
        addRes( 'desc none', '}}' )
    end

    function drawSlice( i, q, start )
        local color = colors[i]
        local angle = start * 2 * math.pi
        local sin, cos = math.abs( math.sin( angle ) ), math.abs( math.cos( angle ) )
        local wsin, wcos = sin * radius, cos * radius
        local s1, s2, w1, w2, w3, w4, width, border
        local style
        if q == 1 then
            border = 'left'
            w1, w2, w3, w4 = 0, 0, wsin, wcos
            s1, s2 = 'bottom', 'left'
        elseif q == 2 then
            border = 'bottom'
            w1, w2, w3, w4 = 0, wcos, wsin, 0
            s1, s2 = 'bottom', 'right'
        elseif q == 3 then
            border = 'right'
            w1, w2, w3, w4 = wsin, wcos, 0, 0
            s1, s2 = 'top', 'right'
        else
            border = 'top'
            w1, w2, w3, w4 = wsin, 0, 0, wcos
            s1, s2 = 'top', 'left'
        end

        local style = string.format( 'border:solid transparent;position:absolute;%s:%spx;%s:%spx;width:%spx;height:%spx', s1, radius, s2, radius, radius, radius )
        if start <= ( q - 1 ) * 0.25 then
            style = string.format( '%s;border:0;background-color:%s', style, color )
        else
            style = string.format( '%s;border-width:%spx %spx %spx %spx;border-%s-color:%s', style, w1, w2, w3, w4, border, color )
        end
        addRes( mw.text.tag( 'div', { style = style }, '' ) )
    end

    function createSlices()
        function coordsOfAngle( angle )
            return ( 100 + math.floor( 100 * math.cos( angle ) ) ) .. ' ' .. ( 100 - math.floor( 100 * math.sin( angle ) ) )
        end

        local sum, start = 0, 0
        for _, value in ipairs( values ) do sum = sum + value end
        for i, value in ipairs(values) do
            local poly = { 'poly 100 100' }
            local startC, endC =  start / sum, ( start + value ) / sum
            local startQ, endQ = math.floor( startC * 4 + 1 ), math.floor( endC * 4 + 1 )
            for q = startQ, math.min( endQ, 4 ) do drawSlice( i, q, startC ) end
            for angle = startC * 2 * math.pi, endC * 2 * math.pi, 0.02 do
                table.insert( poly,  coordsOfAngle( angle ) )
            end
            table.insert( poly, coordsOfAngle( endC * 2 * math.pi ) .. ' 100 100 ' .. links[i] )
            table.insert( imslices, table.concat( poly, ' ' ) )
            start = start + values[i]
        end
    end

    analyzeParams()
    if #values == 0 then error( "no slices found - can't draw pie chart" ) end
    addRes( mw.text.tag( 'div', { class = 'chart noresize', style = string.format( 'margin-top:0.5em;max-width:%spx;', radius * 2 ) } ) )
    addRes( mw.text.tag( 'div', { style = string.format( 'position:relative;min-width:%spx;min-height:%spx;max-width:%spx;overflow:hidden;', radius * 2, radius * 2, radius * 2 ) } ) )
    createSlices()
    addRes( mw.text.tag( 'div', { style = string.format( 'position:absolute;min-width:%spx;min-height:%spx;overflow:hidden;', radius * 2, radius * 2 ) } ) )
    createImageMap()
    addRes( '</div>' ) -- close "position:relative" div that contains slices and imagemap.
    addRes( '</div>' ) -- close "position:relative" div that contains slices and imagemap.
    createGroupList( res, legends, colors ) -- legends
    addRes( '</div>' ) -- close containing div
    return frame:preprocess( table.concat( res, '\n' ) )
end


function barChart( frame )
	
	local res = {}
    local args = frame.args -- can be changed to frame:getParent().args
    local values, xlegends, colors, tooltips, yscales, yscalesneg = {}, {}, {}, {} ,{}, {}, {}, {}
    local groupNames, unitsSuffix, unitsPrefix, links = {}, {}, {}, {}
    local width, height, stack, delimiter = 500, 350, false, args.delimiter or ':'
    local chartWidth, chartHeight, defcolor, scalePerGroup, accumulateTooltip

    local numGroups, numValues
    local scaleWidth
	
	table.insert( res, frame:extensionTag{ name = 'templatestyles', args = { src = 'TemplateStyles sandbox/Ita140188/styles.css'} })

	function createGroupList( tab, legends, cols )
	    if #legends > 1 and not hideGroupLegends then
	        table.insert( tab, mw.text.tag( 'div', { style = string.format( "width:%spx;", chartWidth ) } ) )
	        local list = {}
	        local spanStyle = "padding:0 1em;background-color:%s;border:1px solid %s;margin-right:1em;-webkit-print-color-adjust:exact;"
	        for gi = 1, #legends do
	            local span = mw.text.tag( 'span', { style = string.format( spanStyle, cols[gi], cols[gi] ) }, '&nbsp;' ) .. ' '..  legends[gi]
	            table.insert( list, mw.text.tag( 'li', {}, span ) )
	        end
	        table.insert( tab,
	            mw.text.tag( 'ul',
	                {style="width:100%;list-style:none;-webkit-column-width:12em;-moz-column-width:12em;column-width:12em;"},
	                table.concat( list, '\n' )
	            )
	        )
	        table.insert( tab, '</div>' )
	    end
	end



    function validate()
        function asGroups( name, tab, toDuplicate, emptyOK )
            if #tab == 0 and not emptyOK then
                error( "must supply values for " .. keywords[name] )
            end
            if #tab == 1 and toDuplicate then
                for i = 2, numGroups do tab[i] = tab[1] end
            end
            if #tab > 0 and #tab ~= numGroups then
                error ( keywords[name] .. ' must contain the same number of items as the number of groups, but it contains ' .. #tab .. ' items and there are ' .. numGroups .. ' groups')
            end
        end

        -- do all sorts of validation here, so we can assume all params are good from now on.
        -- among other things, replace numerical values with mw.language:parseFormattedNumber() result


        chartHeight = height - 80
        numGroups = #values
        numValues = #values[1]
        defcolor = defcolor or 'blue'
        colors[1] = colors[1] or defcolor
        scaleWidth = scalePerGroup and 80 * numGroups or 30
        chartWidth = width -scaleWidth
        asGroups( 'unitsPrefix', unitsPrefix, true, true )
        asGroups( 'unitsSuffix', unitsSuffix, true, true )
        asGroups( 'colors', colors, true, true )
        asGroups( 'groupNames', groupNames, false, false )
        if stack and scalePerGroup then
            error( string.format( 'Illegal settings: %s and %s are incompatible.', keyword.stack, keyword.scalePerGroup ) )
        end
        for gi = 2, numGroups do
            if #values[gi] ~= numValues then error( keywords.group .. " " .. gi .. " does not have same number of values as " .. keywords.group .. " 1" ) end
        end
        if #xlegends ~= numValues then error( 'Illegal number of ' .. keywords.xlegend .. '. Should be exactly ' .. numValues ) end
    end

    function extractParams()
        function testone( keyword, key, val, tab )
            i = keyword == key and 0 or key:match( keyword .. "%s+(%d+)" )
            if not i then return end
            i = tonumber( i ) or error("Expect numerical index for key " .. keyword .. " instead of '" .. key .. "'")
            if i > 0 then tab[i] = {} end
            for s in mw.text.gsplit( val, '%s*' .. delimiter .. '%s*' ) do
                table.insert( i == 0 and tab or tab[i], s )
            end
            return true
        end

        for k, v in pairs( args ) do
            if k == keywords.width then
                width = tonumber( v )
                if not width or width < 200 then
                    error( 'Illegal width value (must be a number, and at least 200): ' .. v )
                end
            elseif k == keywords.height then
                height = tonumber( v )
                if not height or height < 200 then
                    error( 'Illegal height value (must be a number, and at least 200): ' .. v )
                end
            elseif k == keywords.stack then stack = true
            elseif k == keywords.optint then optint = true
            elseif k == keywords.scalePerGroup then scalePerGroup = true
            elseif k == keywords.defcolor then defcolor = v
            elseif k == keywords.accumulateTooltip then accumulateTooltip = not nulOrWhitespace( v )
            elseif k == keywords.hideGroupLegends then hideGroupLegends = not nulOrWhitespace( v )
            else
                for keyword, tab in pairs( {
                    group = values,
                    xlegend = xlegends,
                    colors = colors,
                    tooltip = tooltips,
                    unitsPrefix = unitsPrefix,
                    unitsSuffix = unitsSuffix,
                    groupNames = groupNames,
                    links = links,
                    } ) do
                        if testone( keywords[keyword], k, v, tab )
                            then break
                        end
                end
            end
        end
    end

    function roundup( x ) -- returns the next round number: eg., for 30 to 39.999 will return 40, for 3000 to 3999.99 wil return 4000. for 10 - 14.999 will return 15.
        local ordermag = 10 ^ math.floor( math.log10( x ) )
        local normalized = x /  ordermag
        local top = normalized >= 1.5 and ( math.floor( normalized + 1 ) ) or 1.5
        return ordermag * top, top, ordermag
    end

    function calcHeightLimits() -- if limits were passed by user, use them, otherwise calculate. for "stack" there's only one limet.
        if stack then
            local sums = {}
            for _, group in pairs( values ) do
                for i, val in ipairs( group ) do sums[i] = ( sums[i] or 0 ) + val end
            end
            local sum = math.max( unpack( sums ) )
            local sumneg = math.min( unpack( sums ) )
            for i = 1, #values do 
            	yscales[i] = sum 
            	yscalesneg[i] = 0 -- -sumneg
            end
        else
            for i, group in ipairs( values ) do 
            	yscales[i] = math.max( unpack( group ) ) 
            	yscalesneg[i] = -math.min( unpack( group ) ) 
            end
        end
        for i, scale in ipairs( yscales ) do yscales[i] = roundup( scale * 0.9999 ) end
        for i, scale in ipairs( yscalesneg ) do yscalesneg[i] = roundup( scale * 0.9999 ) end
        if not scalePerGroup then for i = 1, #values do 
        	yscales[i] = math.max( unpack( yscales ) ) 
        	yscalesneg[i] = math.max ( 0 , math.max( unpack( yscalesneg ) ) )
        end end
    end

    function tooltip( gi, i, val )
        if tooltips and tooltips[gi] and not nulOrWhitespace( tooltips[gi][i] ) then return tooltips[gi][i], true end
        local groupName = not nulOrWhitespace( groupNames[gi] ) and groupNames[gi] .. ': ' or ''
        local prefix = unitsPrefix[gi] or unitsPrefix[1] or ''
        local suffix = unitsSuffix[gi] or unitsSuffix[1] or ''
        return mw.ustring.gsub(groupName .. prefix .. mw.getContentLanguage():formatNum( tonumber( val ) or 0 ) .. suffix, '_', ' '), false
    end

    function calcHeights( gi, i, val )
    	local barHeight = 0
    	local top, base = 0, 0
    	if  tonumber( val ) >= 0 then
	        barHeight = math.floor( val / ( yscales[gi] + yscalesneg[gi] ) * chartHeight + 0.5 ) -- add half to make it "round" instead of "trunc"
	        top, base = chartHeight - barHeight - yscalesneg[gi] / ( yscales[gi] + yscalesneg[gi] ) * chartHeight , 0
	        -- barHeight = math.floor( val / yscales[gi] * chartHeight + 0.5 ) -- add half to make it "round" instead of "trunc"
        	-- top, base = chartHeight - barHeight, 0
        else 
	        barHeight = math.floor( -val / ( yscales[gi] + yscalesneg[gi] ) * chartHeight + 0.5 ) -- add half to make it "round" instead of "trunc"
	        top, base = chartHeight - yscales[gi] / ( yscales[gi] + yscalesneg[gi] ) * chartHeight, 0
	    end
        if stack then
            local rawbase = 0
            for j = 1, gi - 1 do rawbase = rawbase + values[j][i] end -- sum the "i" value of all the groups below our group, gi.
            base = math.floor( chartHeight * rawbase / yscales[gi] ) -- normally, and especially if it's "stack", all the yscales must be equal.
        end
        return barHeight, top - base
    end
    
    function calcHeightsOld( gi, i, val )
        local barHeight = math.floor( val / yscales[gi] * chartHeight + 0.5 ) -- add half to make it "round" instead of "trunc"
        local top, base = chartHeight - barHeight, 0
        if stack then
            local rawbase = 0
            for j = 1, gi - 1 do rawbase = rawbase + values[j][i] end -- sum the "i" value of all the groups below our group, gi.
            base = math.floor( chartHeight * rawbase / yscales[gi] ) -- normally, and especially if it's "stack", all the yscales must be equal.
        end
        return barHeight, top - base
    end

    function groupBounds( i )
        local setWidth = ( chartWidth / numValues )
        -- local setOffset = ( i - 1 ) * setWidth
        local setOffset = ( i - 1 ) * setWidth
        return setOffset, setWidth
    end

    function calcx( gi, i )
        local setOffset, setWidth = groupBounds( i )
        if stack or numGroups == 1 then
            local barWidth = math.min( 38, ( 0.8 * setWidth ) )
            return setOffset + (setWidth - barWidth) / 2, barWidth
        end
        setWidth = 0.85 * setWidth
        local barWidth = ( 0.75 * setWidth / numGroups )
        local left = setOffset + ( ( gi - 1 ) / numGroups * setWidth )
        return left, barWidth
    end

    function drawbar( gi, i, val, ttval )
        if val == '0' then return end -- do not show single line (borders....) if value is 0, or rather, '0'. see talkpage

        local color, tooltip, custom = colors[gi] or defcolor or 'blue', tooltip( gi, i, ttval or val )
        local left, barWidth = calcx( gi, i )
        local barHeight, top = calcHeights( gi, i, val )
        
        -- borders so it shows up when printing
        local style = string.format("position:absolute;left:%spx;top:%spx;height:%spx;min-width:%spx;max-width:%spx;background-color:%s;-webkit-print-color-adjust:exact;border:1px solid %s;border-bottom:none;overflow:hidden;",
                        left, top, barHeight-1, barWidth-2, barWidth-2, color, color)
        local link = links[gi] and links[gi][i] or ''
        local img = not nulOrWhitespace( link ) and mw.ustring.format( '[[File:Transparent.png|1000px|link=%s|%s]]', link, custom and tooltip or '' ) or ''
        table.insert( res, mw.text.tag( 'div', { style = style, title = tooltip, class = "chart2-bar" }, img ) )
    end





    function drawYScale()
    	
        function drawSingle( gi, color, single )
            local yscale = yscales[gi]
            local _, top, ordermag = roundup( yscale * 0.999 )
            local numnotches = top <= 1.5 and top * 4
                    or top < 4  and top * 2
                    or top
            local valStyleStrCntnr = 'display:block;position:relative;height:%spx;text-align:right;margin:0px;' -- SINGLE ELEMENT OF Y AXIS
            local valStyleStrValue = 'display:block;position:relative;float:right;height:%spx;text-align:right;margin:%spx 0px 0px 0px;vertical-align:middle;line-height:%spx;' -- value
            local valStyleStrNotch = 'display:block;position:relative;float:right;height:%spx;text-align:right;width:5px; border-top:1px solid black' -- notch
                -- or 'position:relative;height=20px;text-align:right;vertical-align:middle;max-width:%spx;top:%spx;left:3px;background-color:%s;color:white;font-weight:bold;text-shadow:-1px -1px 0 #000,1px -1px 0 #000,-1px 1px 0 #000,1px 1px 0 #000;padding:0 2px'
            -- local notchStyleStr = 'position:absolute;height=1px;min-width:5px;top:%spx;left:%spx;border:1px solid %s;'
            for i = 1, numnotches do
                local val = (numnotches - i + 1) / numnotches * yscale -- value of this notch
                
                local y = ( 1 / numnotches * chartHeight )   --chartHeight - calcHeights( gi, 1, val ) -- height of a single notch
                local divCntnr = mw.text.tag( 'div', { style = string.format( valStyleStrCntnr, y, color ) } )
                local divValue = mw.text.tag( 'div', { style = string.format( valStyleStrValue, y, -y/2, y, color ) }, mw.getContentLanguage():formatNum( tonumber( val ) or 0 ) )
                local divNotch = mw.text.tag( 'div', { style = string.format( valStyleStrNotch, y, color ) }, '&nbsp;' ) 
                table.insert( res, divCntnr )
	            if val~=math.floor(val) and optint then
                	
                else
	                table.insert( res, divNotch )
	                table.insert( res, divValue )
            	end
                table.insert( res, '</div>' )
                table.insert( res, '<div style="clear:right;display:block"></div>' )
               
                
                -- div = mw.text.tag( 'div', { style = string.format( notchStyleStr, y, width - 4, color ) }, '' )
                -- table.insert( res, div )
            end
        end

        if scalePerGroup then
            -- local colWidth = 80
            -- local colStyle = "position:absolute;height:%spx;min-width:%spx;left:%spx;border-right:1px solid %s;color:%s"
            
            
            -- local colStyle = "height:%spx;border-right:1px solid %s;color:%s;display:inline-block;text-align:right"
            -- for gi = 1, numGroups do
            --     -- local left = ( gi - 1 ) * colWidth
            --     local color = colors[gi] or defcolor
            --     -- table.insert( res, mw.text.tag( 'div', { style = string.format( colStyle, chartHeight, colWidth, left, color, color ) } ) )
            --     table.insert( res, mw.text.tag( 'div', { style = string.format( colStyle, chartHeight, color, color ) } ) )
            --     drawSingle( gi, color )
            --     table.insert( res, '</div>' )
            -- end
        else
            drawSingle( 1, 'black',  true ) -- gi is the id of y axis when more than 1 
        end
    end




    function drawXlegends()
        local setOffset, setWidth
        local legendDivStyleFormat = "display:block;float:left;position:relative;vertical-align:top;width:%spx;text-align:center;margin:0px 0px 0px %spx;"
        --local tickDivstyleFormat = "display:block;float:left;position:relative;vertical-align:top;border-left:1px solid black;width:%spx;text-align:center;margin:0px 0px 0px %spx;"
        local offsetleft = 0;
        setOffset, setWidth = groupBounds( 1 )
        for i = 1, numValues do
            if not nulOrWhitespace( xlegends[i] ) then
            	--table.insert( res, mw.text.tag( 'div', { style = string.format( tickDivStyleFormat, setWidth/2, offsetleft+setWidth/2 ) }, xlegends[i] or '' ) )
                table.insert( res, mw.text.tag( 'div', { style = string.format( legendDivStyleFormat, setWidth, offsetleft ) }, xlegends[i] or '' ) )
                offsetleft=0;
            else
            	offsetleft=offsetleft+setWidth;
            end
            
                -- setOffset, setWidth = groupBounds( i )
                -- table.insert( res, mw.text.tag( 'div', { style = string.format( legendDivStyleFormat, setWidth ) }, xlegends[i] or '' ) )
            
        end
    end

	function drawXticks()
        local setOffset, setWidth
        local tickDivStyleFormat = "display:block;float:left;position:relative;height:5px;vertical-align:top;border-left:1px solid black;width:%spx;text-align:center;margin:0px 0px 0px %spx;"
        local offsetleft = 0;
        setOffset, setWidth = groupBounds( 1 )
        for i = 1, numValues do
            if not nulOrWhitespace( xlegends[i] ) then
            	table.insert( res, mw.text.tag( 'div', { style = string.format( tickDivStyleFormat, (setWidth/2)-1, (offsetleft+setWidth/2) ) }, '' ) )
                offsetleft=0;
            else
            	offsetleft=offsetleft+setWidth;
            end
        end
    end


    function drawChart()
        table.insert( res, mw.text.tag( 'div', { style = string.format("position:relative;padding:1em 0em 1em 0em;") } ) ) -- container div
        table.insert( res, mw.text.tag( 'div', { style = string.format("position:relative;white-space:nowrap;" ) } ) ) -- container div
		table.insert( res, mw.text.tag( 'div', { style = string.format("position:relative;height:%spx;display:inline-block;text-align:right;vertical-align:top;", chartHeight ) } ) )
        drawYScale()
        table.insert( res, '</div><div style="position:relative;display:inline-block">' )
        -- table.insert( res, mw.text.tag( 'div', { style = string.format("position:relative;display:inline-block" ) } ) ) -- right side container div (should not have space)
        table.insert( res, mw.text.tag( 'div', { style = string.format("height:%spx;width:%spx;border-left:1px black solid;border-bottom:1px black solid;display:block;margin:0px;padding:0px;", chartHeight, chartWidth ) } ) ) -- the actual chart
        local acum = stack and accumulateTooltip and {}
        for gi, group in pairs( values ) do
            for i, val in ipairs( group ) do
                if acum then acum[i] = ( acum[i] or 0 ) + val end
                drawbar( gi, i, val, acum and acum[i] )
            end
        end
        table.insert( res, '</div>' )
        table.insert( res, mw.text.tag( 'div', { style = string.format( "position:relative;width:%spx;float:left;", chartWidth ) } ) ) -- X ticks
        drawXticks()
        table.insert( res, '</div>' )
        table.insert( res, mw.text.tag( 'div', { style = string.format( "position:relative;width:%spx;", chartWidth ) } ) ) -- X legends
        drawXlegends()
        table.insert( res, '</div>' )
        table.insert( res, '</div>' )
        table.insert( res, '</div>' )
        createGroupList( res, groupNames, colors )
        table.insert( res, '</div>' )
    end

    extractParams()
    validate()
    calcHeightLimits()
    drawChart()
    return table.concat( res, "\n" )
end

return {
    ['bar-chart'] = barChart,
    [keywords.barChart] = barChart,
    [keywords.pieChart] = pieChart,
}
--</source>