Module:Chart
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Template:Mobile view problem 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. |
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
}}
10
20
30
40
50
60
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
}}
25
50
75
100
125
150
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
}}
25
50
75
100
125
150
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
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::::
}}
10
20
30
40
50
60
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%)
- 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%)
- 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
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 = {}, {}, {}, {} ,{}, {}, {}
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
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 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.', 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.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
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 ) )
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
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 = 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 = math.floor( chartWidth / numValues )
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, 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
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, }, img ) )
end
function drawYScale()
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
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 + 5, setWidth - 10, setWidth - 10 ) }, xlegends[i] or '' ) )
table.insert( res, mw.text.tag( 'div', { style = string.format( tickDivstyleFormat, setOffset + setWidth / 2 ) }, '' ) )
end
end
end
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,
}