Module:Chart
This Lua module is used on approximately 850 pages, so changes to it will be widely noticed. Please test any changes in the module's /sandbox or /testcases subpages. Please consider discussing changes on the talk page before implementing them. |
Module Chart exports two functions: bar chart and pie chart
- Note - Template:Graph:Chart is an alternative template, that may be more suitable for your use case.
Drawing Bar charts: "bar 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. |
width | number. if provided, must be at least 200. default: 500 |
height | number. if provided, must be at least 200. default: 350 |
group n | (where "n" is a number. use "group 1", "group 2" etc. for as many groups as there are in the graph) the values to be charted. see below. |
tooltip n | tooltip to be associated with specific bar. If no tooltip for a specific bar is defined, and this bar has a link, then this link will be used as tooltip. Otherwise, the tooltip will be combined from the group name and the value, optionally with "units prefix" and "units suffix". |
links n | links to articles to be associated with specific bar |
stack | whether to stack the different groups on top of each other. do not specify to show bars side by side. Any non-empty value means "yes". To say "no", simply do not supply this parameter at all, or leave the value blank. |
tooltip value accumulation | useful only with stack: when set to true, tooltip will show accumulated value of all blocks up to current one |
colors | the colors used to denote the various groups. should have exactly as many values as # of groups. can be given as standard html-recognized color names, or using #xxx or #xxxxxx notation. |
x legends | The legends for the X values. Wikicode, such as internal links or templates can be used. |
hide group legends | if set to true, group legends will not be shown below chart. Any non-empty value means "yes". To say "no", simply do not supply this parameter at all, or leave the value blank. |
scale per group | set to use separate Y- scale for each group. leave empty to use one scale for all groups. incompatible with "stack". Note that even if some of the scales are exactly the same, they will be drawn separately when this setting is on. 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 tooltip. e.g., $, so values will show as "$500" instead of "500" in the tooltip |
units suffix | ditto for units suffix. use, e.g. "Kg" so values will show as 88Kg instead of 88 in tooltip. underscore ("_") are replaced by spaces, to allow a space between the value and the suffix. |
group names | names of different groups |
y tick marks | number of tick marks on the y axis. if the value is negative or omitted, the module will attempt to automatically calculate a sensible number of tick marks. |
Display in the mobile view
Bar charts behave unpredictably, causing problems with the axes and legend. Use Template:Graph:Chart instead. Pie charts aren't too bad.[dubious ]
Examples
Basic
{{ #invoke:Chart | bar chart | group 1 = 40 : 50 : 60 : 20 | group 2 = 20 : 60 : 12 : 44 | group 3 = 55 : 14 : 33 : 5 | links 1 = Apple : McCintosh : Golden delicious | links 2 = Banana : Apricot : Peach | links 3 = Orange : Pear : Bear | tooltip 2 = tooltip 1 : tooltip 2 : tooltip 3 : tooltip 4 | colors = green : yellow : orange | group names = Apple : Banana : Orange | x legends = Before : During : After : Post mortem }}
- Apple
- Banana
- Orange
Stacked
Here is the same graph, with more modest height and width, using "stack", and adding "units suffix" for good measure:
{{ #invoke:Chart | bar chart | height = 250 | width = 300 | stack = 1 | group 1 = 40 : 50 : 60 : 20 | group 2 = 20 : 60 : 12 : 44 | group 3 = 55 : 14 : 33 : 5 | colors = green : yellow : orange | group names = Apple : Banana : Orange | units suffix = Kg | x legends = Before : During : After : Post mortem }}
- Apple
- Banana
- Orange
Scale per group
This option has been disabled. It was rarely used and broke in the last code update. Here is an example with large number of groups - mainly to test how it looks with large number of legends:
{{ #invoke:Chart | bar chart | width = 800 | height = 550 | group 1 = 1:2:3:4:5:4:3:2:1 | group 2 = 1:2:3:4:5:4:3:2:1 | group 3 = 1:2:3:4:5:4:3:2:1 | group 4 = 1:2:3:4:5:4:3:2:1 | group 5 = 1:2:3:4:5:4:3:2:1 | group 6 = 1:2:3:4:5:4:3:2:1 | group 7 = 1:2:3:4:5:4:3:2:1 | group 8 = 1:2:3:4:5:4:3:2:1 | group 9 = 1:2:3:4:5:4:3:2:1 | group 10 = 1:2:3:4:5:4:3:2:1 | group 11 = 1:2:3:4:5:4:3:2:1 | group 12 = 1:2:3:4:5:4:3:2:1 | group 13 = 1:2:3:4:5:4:3:2:1 | group 14 = 1:2:3:4:5:4:3:2:1 | group 15 = 1:2:3:4:5:4:3:2:1 | group 16 = 1:2:3:4:5:4:3:2:1 | group 17 = 1:2:3:4:5:4:3:2:1 | group 18 = 1:2:3:4:5:4:3:2:1 | group 19 = 1:2:3:4:5:4:3:2:1 | group 20 = 1:2:3:4:5:4:3:2:1 | group 21 = 1:2:3:4:5:4:3:2:1 | colors = Silver:Gray:Black:Red:Maroon:Yellow:Olive:Lime:Green:Aqua:Teal:Blue:Navy:Fuchsia:Purple:ForestGreen:Tomato:LightSeaGreen:RosyBrown:DarkOliveGreen:MediumVioletRed | group names = Alabama:Alaska:Arizona:Arkansas:California:Colorado:Connecticut:Delaware:Florida:Georgia:Hawaii:Idaho:Illinois:Indiana:Iowa:Kansas:Kentucky:Louisiana:Maine:Maryland:Massachusetts | x legends = 1920 : 1930 : 1940: 1950 : 1960 : 1970 : 1990 : 2000 : 2010 | units prefix = $ | units suffix = _billion | stack = 1 }}
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
If there are many values, x legends can be diluted by using delimiters with nothing in between:
{{ #invoke:Chart | bar chart | group 1 = 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 | units suffix = _Things | group names = Some | x legends = ::::1940::::::::::1950::::::::::1960::::::::::1970::::::::::1980::::::::::1990:::: }}
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%)
- 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%)
--[[ 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', yticks = 'y tick marks', 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', slices = 'slices', slice = 'slice', radius = 'radius', percent = 'percent', } -- here is what you want to translate local defColors = mw.loadData("Module:Chart/Default colors") local hideGroupLegends 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] ) }, ' ' ) .. ' '.. legends[gi] table.insert( list, mw.text.tag( 'li', {}, span ) ) end table.insert( tab, mw.text.tag( 'ul', {style="width:100%;list-style:none;column-width:12em;"}, table.concat( list, '\n' ) ) ) table.insert( tab, '</div>' ) end end local 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() local function getArg( s, def, subst, with ) local result = args[keywords[s]] or def or '' if subst and with then result = string.gsub( result, subst, with ) end return result end local function analyzeParams() local 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 '', slice ) ) 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 = 0 for slice in string.gmatch( slicesStr or '', "%b()" ) do i = i + 1 addSlice( i, string.match( slice, '^%(%s*(.-)%s*%)$' ) ) end for k, v in pairs(args) do local ind = string.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] = string.format( '%s: %s%s%s%s', names[i], prefix, lang:formatNum( value ), suffix, addprec ) links[i] = mw.text.trim( links[i] or string.format( '[[#noSuchAnchor|%s]]', legends[i] ) ) end end local function addRes( ... ) for _, v in pairs( { ... } ) do table.insert( res, v ) end end local function createImageMap() addRes( '{{#tag:imagemap|', 'File:Circle frame.svg{{!}}' .. ( radius * 2 ) .. 'px' ) addRes( unpack( imslices ) ) addRes( 'desc none', '}}' ) end local 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, border 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 local function createSlices() local 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 local function barChart( frame ) local res = {} local args = frame.args -- can be changed to frame:getParent().args local values, xlegends, colors, tooltips, yscales = {}, {}, {}, {}, {} local groupNames, unitsSuffix, unitsPrefix, links = {}, {}, {}, {} local width, height, yticks, stack, delimiter = 500, 350, -1, false, args.delimiter or ':' local chartWidth, chartHeight, defcolor, scalePerGroup, accumulateTooltip local numGroups, numValues local scaleWidth local function validate() local 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 100 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.', keywords.stack, keywords.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 local function extractParams() local function testone( keyword, key, val, tab ) local 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.yticks then yticks = tonumber(v) or -1 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 local 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 local 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 ) ) for i = 1, #values do yscales[i] = sum end else for i, group in ipairs( values ) do yscales[i] = math.max( unpack( group ) ) end end for i, scale in ipairs( yscales ) do yscales[i] = roundup( scale * 0.9999 ) end if not scalePerGroup then for i = 1, #values do yscales[i] = math.max( unpack( yscales ) ) end end end local 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 = mw.text.killMarkers(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 string.gsub(groupName .. prefix .. mw.getContentLanguage():formatNum( tonumber( val ) or 0 ) .. suffix, '_', ' '), false end local function calcHeights( gi, i, val ) local barHeight = math.max( 2, math.floor( val / yscales[gi] * chartHeight + 0.5 ) ) -- add half to make it "round" instead of "trunc", min height to 2 to avoid negative bar sizes local top, base = chartHeight - barHeight, 0 if stack then for j = 1, gi - 1 do if tonumber(values[j][i]) > 0 then base = base + math.max( 2, math.floor( values[j][i] / yscales[gi] * chartHeight + 0.5 ) ) -- sum the "i" value of all the groups below our group, gi, and keep the same calculation for each bar end end end return barHeight, top - base end local function groupBounds( i ) local setWidth = math.floor( chartWidth / numValues ) local setOffset = ( i - 1 ) * setWidth return setOffset, setWidth end local function calcx( gi, i ) local setOffset, setWidth = groupBounds( i ) if stack or numGroups == 1 then local barWidth = math.min( 38, math.floor( 0.8 * setWidth ) ) return setOffset + (setWidth - barWidth) / 2, barWidth end setWidth = 0.85 * setWidth local barWidth = math.floor( 0.75 * setWidth / numGroups ) local left = setOffset + math.floor( ( gi - 1 ) / numGroups * setWidth ) return left, barWidth end local 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 string.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, }, img ) ) end local function drawYScale() local function drawSingle( gi, color, width, yticks, single ) local yscale = yscales[gi] local _, top, ordermag = roundup( yscale * 0.999 ) local numnotches = yticks >= 0 and yticks or (top <= 1.5 and top * 4 or top < 4 and top * 2 or top) local valStyleStr = single and 'position:absolute;height=20px;text-align:right;vertical-align:middle;width:%spx;top:%spx;padding:0 2px' or 'position:absolute;height=20px;text-align:right;vertical-align:middle;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 = i / numnotches * yscale local y = chartHeight - calcHeights( gi, 1, val ) local div = mw.text.tag( 'div', { style = string.format( valStyleStr, width - 10, y - 10, color ) }, mw.getContentLanguage():formatNum( tonumber( val ) or 0 ) ) table.insert( res, 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" 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 ) } ) ) drawSingle( gi, color, colWidth, yticks ) table.insert( res, '</div>' ) end else drawSingle( 1, 'black', scaleWidth, yticks, true ) end end local function drawXlegends() local setOffset, setWidth local legendDivStyleFormat = "position:absolute;left:%spx;top:10px;min-width:%spx;max-width:%spx;text-align:center;vertical-align:top;" local tickDivstyleFormat = "position:absolute;left:%spx;height:10px;width:1px;border-left:1px solid black;" for i = 1, numValues do if not nulOrWhitespace( xlegends[i] ) then setOffset, setWidth = groupBounds( i ) -- setWidth = 0.85 * setWidth table.insert( res, mw.text.tag( 'div', { style = string.format( legendDivStyleFormat, setOffset + 1, setWidth - 2, setWidth - 2 ) }, xlegends[i] or '' ) ) table.insert( res, mw.text.tag( 'div', { style = string.format( tickDivstyleFormat, setOffset + setWidth / 2 ) }, '' ) ) end end end local function drawChart() table.insert( res, mw.text.tag( 'div', { class = 'chart noresize', style = string.format( 'margin-top:1em;max-width:%spx;', width ) } ) ) table.insert( res, mw.text.tag( 'div', { style = string.format("position:relative;min-height:%spx;min-width:%spx;max-width:%spx;", height, width, width ) } ) ) table.insert( res, mw.text.tag( 'div', { style = string.format("float:right;position:relative;min-height:%spx;min-width:%spx;max-width:%spx;border-left:1px black solid;border-bottom:1px black solid;", chartHeight, chartWidth, chartWidth ) } ) ) 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:absolute;height:%spx;min-width:%spx;max-width:%spx;", chartHeight, scaleWidth, scaleWidth, scaleWidth ) } ) ) drawYScale() table.insert( res, '</div>' ) table.insert( res, mw.text.tag( 'div', { style = string.format( "position:absolute;top:%spx;left:%spx;width:%spx;", chartHeight, scaleWidth, chartWidth ) } ) ) drawXlegends() 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, }