Module:Graph

-- ATTENTION:	Please edit this code at https://de.wikipedia.org/wiki/Modul:Graph --         	This way all wiki languages can stay in sync. Thank you! -- --	BUGS:	X-Axis label format bug? (xAxisFormat =) https://en.wikipedia.org/wiki/Template_talk:Graph:Chart#X-Axis_label_format_bug?_(xAxisFormat_=) --			linewidths - doesnt work for two values (eg 0, 1) but work if added third value of both are zeros? Same for marksStroke - probably bug in Graph extension --			clamp - "clamp" used to avoid marks outside marks area, "clip" should be use instead but not working in Graph extension, see https://phabricator.wikimedia.org/T251709 --	TODO: --			marks: --				- line strokeDash + serialization, --				- symStroke serialization --				- symbolsNoFill serialization --				- arbitrary SVG path symbol shape as symbolsShape argument --				- annotations --					- vertical / horizontal line at specific values --					- rectangle shape for x,y data range --				- graph type serialization (deep rebuild reqired) --	    - second axis (deep rebuild required - assignment of series to one of two axies)

-- Version History (_PLEASE UPDATE when modifying anything_): --  2020-08-08 New logic for "nice" for x axis (problem with scale when xType = "date") and grid --  2020-06-21 Serializes symbol size --             transparent symbosls (from line colour) - buggy (incorrect opacity on overlap with line) --             Linewidth serialized with "linewidths" --             Variable symbol size and shape of symbols on line charts, default showSymbols = 2, default symbolsShape = circle, symbolsStroke = 0 --             p.chartDebuger(frame) for easy debug and JSON output --  2020-06-07 Allow lowercase variables for use with Template:Wikidata list --  2020-05-27 Map: allow specification which feature to display and changing the map center --  2020-04-08 Change default showValues.fontcolor from black to persistentGrey --  2020-04-06 Logarithmic scale outputs wrong axis labels when "nice"=true --  2020-03-11 Allow user-defined scale types, e.g. logarithmic scale --  2019-11-08 Apply color-inversion-friendliness to legend title, labels, and xGrid --  2019-01-24 Allow comma-separated lists to contain values with commas --  2018-10-13 Fix browser color-inversion issues via #54595d per mw:Template:Graph:PageViews --  2018-09-16 Allow disabling the legend for templates --  2018-09-10 Allow grid lines --  2018-08-26 Use user-defined order for stacked charts --  2018-02-11 Force usage of explicitely provided x minimum and/or maximum values, rotation of x labels --  2017-08-08 Added showSymbols param to show symbols on line charts --  2016-05-16 Added encodeTitleForPath to help all path-based APIs graphs like pageviews --  2016-03-20 Allow omitted data for charts, labels for line charts with string (ordinal) scale at point location --  2016-01-28 For maps, always use wikiraw:// protocol. https:// will be disabled soon.

local p = {}

--add debug text to this string with eg. debuglog = debuglog .. "" .. "\n\n" .. "- " .. debug.traceback .. "result type: ".. type(result) .. " result: \n\n" .. mw.dumpObject(result) --invoke chartDebuger to get graph JSON and this string debuglog = "Debug " .. "\n\n"

local baseMapDirectory = "Module:Graph/" local persistentGrey = "#54595d"

local shapes = {} shapes = { circle = "circle", x= "M-.5,-.5L.5,.5M.5,-.5L-.5,.5", square = "square", cross = "cross", diamond = "diamond", triangle_up = "triangle-up", triangle_down = "triangle-down", triangle_right = "triangle-right", triangle_left = "triangle-left", banana = "m -0.5281,0.2880 0.0020,0.0192 m 0,0 c 0.1253,0.0543 0.2118,0.0679 0.3268,0.0252 0.1569,-0.0582 0.3663,-0.1636 0.4607,-0.3407 0.0824,-0.1547 0.1202,-0.2850 0.0838,-0.4794 l 0.0111,-0.1498 -0.0457,-0.0015 c -0.0024,0.3045 -0.1205,0.5674 -0.3357,0.7414 -0.1409,0.1139 -0.3227,0.1693 -0.5031,0.1856 m 0,0 c 0.1804,-0.0163 0.3622,-0.0717 0.5031,-0.1856 0.2152,-0.1739 0.3329,-0.4291 0.3357,-0.7414 l -0.0422,0.0079 c 0,0 -0.0099,0.1111 -0.0227,0.1644 -0.0537,0.1937 -0.1918,0.3355 -0.3349,0.4481 -0.1393,0.1089 -0.2717,0.2072 -0.4326,0.2806 l -0.0062,0.0260" }

local function numericArray(csv) if not csv then return end

local list = mw.text.split(csv, "%s*,%s*") local result = {} local isInteger = true for i = 1, #list do		if list[i] == "" then result[i] = nil else result[i] = tonumber(list[i]) if not result[i] then return end if isInteger then local int, frac = math.modf(result[i]) isInteger = frac == 0.0 end end end

return result, isInteger end

local function stringArray(text) if not text then return end

local list = mw.text.split(mw.ustring.gsub(tostring(text), "\\,", ""), ",", true) for i = 1, #list do		list[i] = mw.ustring.gsub(mw.text.trim(list[i]), "", ",") end return list end

local function isTable(t) return type(t) == "table" end

local function copy(x) if type(x) == "table" then local result = {} for key, value in pairs(x) do result[key] = copy(value) end return result else return x	end end

function p.map(frame) -- map path data for geographic objects local basemap = frame.args.basemap or "Template:Graph:Map/Inner/Worldmap2c-json" -- WorldMap name and/or location may vary from wiki to wiki -- scaling factor local scale = tonumber(frame.args.scale) or 100 -- map projection, see https://github.com/mbostock/d3/wiki/Geo-Projections local projection = frame.args.projection or "equirectangular" -- defaultValue for geographic objects without data local defaultValue = frame.args.defaultValue or frame.args.defaultvalue local scaleType = frame.args.scaleType or frame.args.scaletype or "linear" -- minimaler Wertebereich (nur für numerische Daten) local domainMin = tonumber(frame.args.domainMin or frame.args.domainmin) -- maximaler Wertebereich (nur für numerische Daten) local domainMax = tonumber(frame.args.domainMax or frame.args.domainmax) -- Farbwerte der Farbskala (nur für numerische Daten) local colorScale = frame.args.colorScale or frame.args.colorscale or "category10" -- show legend local legend = frame.args.legend -- the map feature to display local feature = frame.args.feature or "countries" -- map center local center = numericArray(frame.args.center) -- format JSON output local formatJson = frame.args.formatjson

-- map data are key-value pairs: keys are non-lowercase strings (ideally ISO codes) which need to match the "id" values of the map path data local values = {} local isNumbers = nil for name, value in pairs(frame.args) do		if mw.ustring.find(name, "^[^%l]+$") and value and value ~= "" then if isNumbers == nil then isNumbers = tonumber(value) end local data = { id = name, v = value } if isNumbers then data.v = tonumber(data.v) end table.insert(values, data) end end if not defaultValue then if isNumbers then defaultValue = 0 else defaultValue = "silver" end end

-- create highlight scale local scales if isNumbers then if colorScale then colorScale = string.lower(colorScale) end if colorScale == "category10" or colorScale == "category20" then else colorScale = stringArray(colorScale) end scales = {			{				name = "color", type = scaleType, domain = { data = "highlights", field = "v" }, range = colorScale, nice = true, zero = false }		}		if domainMin then scales[1].domainMin = domainMin end if domainMax then scales[1].domainMax = domainMax end

local exponent = string.match(scaleType, "pow%s+(%d+%.?%d+)") -- check for exponent if exponent then scales[1].type = "pow" scales[1].exponent = exponent end end

-- create legend if legend then legend = {			{				fill = "color", offset = 120, properties = {					title = { fontSize = { value = 14 } }, labels = { fontSize = { value = 12 } }, legend = {						stroke = { value = "silver" }, strokeWidth = { value = 1.5 } }				}			}		}	end -- get map url local basemapUrl if (string.sub(basemap, 1, 10) == "wikiraw://") then basemapUrl = basemap else -- if not a (supported) url look for a colon as namespace separator. If none prepend default map directory name. if not string.find(basemap, ":") then basemap = baseMapDirectory .. basemap end basemapUrl = "wikiraw:///" .. mw.uri.encode(mw.title.new(basemap).prefixedText, "PATH") end

local output = {		version = 2, width = 1, -- generic value as output size depends solely on map size and scaling factor height = 1, -- ditto data = {			{				-- data source for the highlights name = "highlights", values = values },			{				-- data source for map paths data name = feature, url = basemapUrl, format = { type = "topojson", feature = feature }, transform = {					{						-- geographic transformation ("geopath") of map paths data type = "geopath", value = "data",			-- data source scale = scale, translate = { 0, 0 }, center = center, projection = projection },					{						-- join ("zip") of mutiple data source: here map paths data and highlights type = "lookup", keys = { "id" },     -- key for map paths data on = "highlights",   -- name of highlight data source onKey = "id",        -- key for highlight data source as = { "zipped" },   -- name of resulting table default = { v = defaultValue } -- default value for geographic objects that could not be joined }				}			}		},		marks = {			-- output markings (map paths and highlights) {				type = "path", from = { data = feature }, properties = {					enter = { path = { field = "layout_path" } }, update = { fill = { field = "zipped.v" } }, hover = { fill = { value = "darkgrey" } } }			}		},		legends = legend }	if (scales) then output.scales = scales output.marks[1].properties.update.fill.scale = "color" end

local flags if formatJson then flags = mw.text.JSON_PRETTY end return mw.text.jsonEncode(output, flags) end

local function deserializeXData(serializedX, xType, xMin, xMax) local x

if not xType or xType == "integer" or xType == "number" then local isInteger x, isInteger = numericArray(serializedX) if x then xMin = tonumber(xMin) xMax = tonumber(xMax) if not xType then if isInteger then xType = "integer" else xType = "number" end end else if xType then error("Numbers expected for parameter 'x'") end end end if not x then x = stringArray(serializedX) if not xType then xType = "string" end end return x, xType, xMin, xMax end

local function deserializeYData(serializedYs, yType, yMin, yMax) local y = {} local areAllInteger = true

for yNum, value in pairs(serializedYs) do		local yValues if not yType or yType == "integer" or yType == "number" then local isInteger yValues, isInteger = numericArray(value) if yValues then areAllInteger = areAllInteger and isInteger else if yType then error("Numbers expected for parameter '" .. name .. "'") else return deserializeYData(serializedYs, "string", yMin, yMax) end end end if not yValues then yValues = stringArray(value) end

y[yNum] = yValues end if not yType then if areAllInteger then yType = "integer" else yType = "number" end end if yType == "integer" or yType == "number" then yMin = tonumber(yMin) yMax = tonumber(yMax) end

return y, yType, yMin, yMax end

local function convertXYToManySeries(x, y, xType, yType, seriesTitles) local data = {		name = "chart", format = {			type = "json", parse = { x = xType, y = yType } },		values = {} }	for i = 1, #y do		local yLen = table.maxn(y[i]) for j = 1, #x do			if j <= yLen and y[i][j] then table.insert(data.values, { series = seriesTitles[i], x = x[j], y = y[i][j] }) end end end return data end

local function convertXYToSingleSeries(x, y, xType, yType, yNames) local data = { name = "chart", format = { type = "json", parse = { x = xType } }, values = {} }

for j = 1, #y do data.format.parse[yNames[j]] = yType end

for i = 1, #x do		local item = { x = x[i] } for j = 1, #y do item[yNames[j]] = y[j][i] end

table.insert(data.values, item) end return data end

local function getXScale(chartType, stacked, xMin, xMax, xType, xScaleType) if chartType == "pie" then return end

local xscale = {		name = "x", range = "width", zero = false, -- do not include zero value domain = { data = "chart", field = "x" } }	if xScaleType then xscale.type = xScaleType else xscale.type = "linear" end if xMin then xscale.domainMin = xMin end if xMax then xscale.domainMax = xMax end if xMin or xMax then xscale.clamp = true xscale.nice = false end if chartType == "rect" then xscale.type = "ordinal" if not stacked then xscale.padding = 0.2 end -- pad each bar group else if xType == "date" then xscale.type = "time" elseif xType == "string" then xscale.type = "ordinal" xscale.points = true end end if xType and xType ~= "date" and xScaleType ~= "log" then xscale.nice = true end -- force round numbers for x scale, but "log" and "date" scale outputs a wrong "nice" scale return xscale end

local function getYScale(chartType, stacked, yMin, yMax, yType, yScaleType) if chartType == "pie" then return end

local yscale = {		name = "y", range = "height", -- area charts have the lower boundary of their filling at y=0 (see marks.properties.enter.y2), therefore these need to start at zero zero = chartType ~= "line", nice = yScaleType ~= "log" -- force round numbers for y scale, but log scale outputs a wrong "nice" scale }	if yScaleType then yscale.type = yScaleType else yscale.type = "linear" end if yMin then yscale.domainMin = yMin end if yMax then yscale.domainMax = yMax end if yMin or yMax then yscale.clamp = true end if yType == "date" then yscale.type = "time" elseif yType == "string" then yscale.type = "ordinal" end if stacked then yscale.domain = { data = "stats", field = "sum_y" } else yscale.domain = { data = "chart", field = "y" } end

return yscale end

local function getColorScale(colors, chartType, xCount, yCount) if not colors then if (chartType == "pie" and xCount > 10) or yCount > 10 then colors = "category20" else colors = "category10" end end

local colorScale = {		name = "color", type = "ordinal", range = colors, domain = { data = "chart", field = "series" } }	if chartType == "pie" then colorScale.domain.field = "x" end return colorScale end

local function getAlphaColorScale(colors, y)	local alphaScale -- if there is at least one color in the format "#aarrggbb", create a transparency (alpha) scale if isTable(colors) then local alphas = {} local hasAlpha = false for i = 1, #colors do			local a, rgb = string.match(colors[i], "#(%x%x)(%x%x%x%x%x%x)") if a then hasAlpha = true alphas[i] = tostring(tonumber(a, 16) / 255.0) colors[i] = "#" .. rgb else alphas[i] = "1" end end for i = #colors + 1, #y do alphas[i] = "1" end if hasAlpha then alphaScale = { name = "transparency", type = "ordinal", range = alphas } end end return alphaScale end

local function getLineScale(linewidths, chartType) local lineScale = {} lineScale = {       name = "line", type = "ordinal", range = linewidths, domain = { data = "chart", field = "series" } }

return lineScale end

local function getSymSizeScale(symSize) local SymSizeScale = {} SymSizeScale = {       name = "symSize", type = "ordinal", range = symSize, domain = { data = "chart", field = "series" } }

return SymSizeScale end

local function getSymShapeScale(symShape) local SymShapeScale = {} SymShapeScale = {       name = "symShape", type = "ordinal", range = symShape, domain = { data = "chart", field = "series" } }

return SymShapeScale end

local function getValueScale(fieldName, min, max, type) local valueScale = {		name = fieldName, type = type or "linear", domain = { data = "chart", field = fieldName }, range = { min, max } }	return valueScale end

local function addInteractionToChartVisualisation(plotMarks, colorField, dataField) -- initial setup if not plotMarks.properties.enter then plotMarks.properties.enter = {} end plotMarks.properties.enter[colorField] = { scale = "color", field = dataField }

-- action when cursor is over plot mark: highlight if not plotMarks.properties.hover then plotMarks.properties.hover = {} end plotMarks.properties.hover[colorField] = { value = "red" }

-- action when cursor leaves plot mark: reset to initial setup if not plotMarks.properties.update then plotMarks.properties.update = {} end plotMarks.properties.update[colorField] = { scale = "color", field = dataField } end

local function getPieChartVisualisation(yCount, innerRadius, outerRadius, linewidth, radiusScale) local chartvis = {		type = "arc", from = { data = "chart", transform = { { field = "y", type = "pie" } } },

properties = {			enter = { innerRadius = { value = innerRadius }, outerRadius = { }, startAngle = { field = "layout_start" }, endAngle = { field = "layout_end" }, stroke = { value = "white" }, strokeWidth = { value = linewidth or 1 } }		}	}

if radiusScale then chartvis.properties.enter.outerRadius.scale = radiusScale.name chartvis.properties.enter.outerRadius.field = radiusScale.domain.field else chartvis.properties.enter.outerRadius.value = outerRadius end

addInteractionToChartVisualisation(chartvis, "fill", "x")

return chartvis end

local function getChartVisualisation(chartType, stacked, colorField, yCount, innerRadius, outerRadius, linewidth, alphaScale, radiusScale, lineScale, interpolate) if chartType == "pie" then return getPieChartVisualisation(yCount, innerRadius, outerRadius, linewidth, radiusScale) end

local chartvis = {		type = chartType, properties = {			-- chart creation event handler enter = {				x = { scale = "x", field = "x" }, y = { scale = "y", field = "y" } }		}	}	addInteractionToChartVisualisation(chartvis, colorField, "series") if colorField == "stroke" then chartvis.properties.enter.strokeWidth = { value = linewidth or 2.5 } if type(lineScale) =="table" then chartvis.properties.enter.strokeWidth.value = nil chartvis.properties.enter.strokeWidth = {				scale = "line", field= "series" } 		end end

if interpolate then chartvis.properties.enter.interpolate = { value = interpolate } end

if alphaScale then chartvis.properties.update[colorField .. "Opacity"] = { scale = "transparency" } end -- for bars and area charts set the lower bound of their areas if chartType == "rect" or chartType == "area" then if stacked then -- for stacked charts this lower bound is the end of the last stacking element chartvis.properties.enter.y2 = { scale = "y", field = "layout_end" } else --			for non-stacking charts the lower bound is y=0			TODO: "yscale.zero" is currently set to "true" for this case, but "false" for all other cases.			For the similar behavior "y2" should actually be set to where y axis crosses the x axis,			if there are only positive or negative values in the data chartvis.properties.enter.y2 = { scale = "y", value = 0 } end end -- for bar charts ... if chartType == "rect" then -- set 1 pixel width between the bars chartvis.properties.enter.width = { scale = "x", band = true, offset = -1 } -- for multiple series the bar marking needs to use the "inner" series scale, whereas the "outer" x scale is used by the grouping if not stacked and yCount > 1 then chartvis.properties.enter.x.scale = "series" chartvis.properties.enter.x.field = "series" chartvis.properties.enter.width.scale = "series" end end -- stacked charts have their own (stacked) y values if stacked then chartvis.properties.enter.y.field = "layout_start" end

-- if there are multiple series group these together if yCount == 1 then chartvis.from = { data = "chart" } else -- if there are multiple series, connect colors to series chartvis.properties.update[colorField].field = "series" if alphaScale then chartvis.properties.update[colorField .. "Opacity"].field = "series" end -- if there are multiple series, connect linewidths to series if chartype == "line" then chartvis.properties.update["strokeWidth"].field = "series" end

-- apply a grouping (facetting) transformation chartvis = {			type = "group", marks = { chartvis }, from = {				data = "chart", transform = {					{						type = "facet", groupby = { "series" } }				}			}		}		-- for stacked charts apply a stacking transformation if stacked then table.insert(chartvis.from.transform, 1, { type = "stack", groupby = { "x" }, sortby = { "-_id" }, field = "y" } ) else -- for bar charts the series are side-by-side grouped by x			if chartType == "rect" then -- for bar charts with multiple series: each serie is grouped by the x value, therefore the series need their own scale within each x group local groupScale = {					name = "series", type = "ordinal", range = "width", domain = { field = "series" } }

chartvis.from.transform[1].groupby = "x" chartvis.scales = { groupScale } chartvis.properties = { enter = { x = { field = "key", scale = "x" }, width = { scale = "x", band = true } } } end end end

return chartvis end

local function getTextMarks(chartvis, chartType, outerRadius, scales, radiusScale, yType, showValues) local properties if chartType == "rect" then properties = {			x = { scale = chartvis.properties.enter.x.scale, field = chartvis.properties.enter.x.field }, y = { scale = chartvis.properties.enter.y.scale, field = chartvis.properties.enter.y.field, offset = -(tonumber(showValues.offset) or -4) }, --dx = { scale = chartvis.properties.enter.x.scale, band = true, mult = 0.5 }, -- for horizontal text dy = { scale = chartvis.properties.enter.x.scale, band = true, mult = 0.5 }, -- for vertical text align = { }, baseline = { value = "middle" }, fill = { }, angle = { value = -90 }, fontSize = { value = tonumber(showValues.fontsize) or 11 } }		if properties.y.offset >= 0 then properties.align.value = "right" properties.fill.value = showValues.fontcolor or "white" else properties.align.value = "left" properties.fill.value = showValues.fontcolor or persistentGrey end elseif chartType == "pie" then properties = {			x = { group = "width", mult = 0.5 }, y = { group = "height", mult = 0.5 }, radius = { offset = tonumber(showValues.offset) or -4 }, theta = { field = "layout_mid" }, fill = { value = showValues.fontcolor or persistentGrey }, baseline = { }, angle = { }, fontSize = { value = tonumber(showValues.fontsize) or math.ceil(outerRadius / 10) } }		if (showValues.angle or "midangle") == "midangle" then properties.align = { value = "center" } properties.angle = { field = "layout_mid", mult = 180.0 / math.pi }

if properties.radius.offset >= 0 then properties.baseline.value = "bottom" else if not showValues.fontcolor then properties.fill.value = "white" end properties.baseline.value = "top" end elseif tonumber(showValues.angle) then -- qunatize scale for aligning text left on right half-circle and right on left half-circle local alignScale = { name = "align", type = "quantize", domainMin = 0.0, domainMax = math.pi * 2, range = { "left", "right" } } table.insert(scales, alignScale)

properties.align = { scale = alignScale.name, field = "layout_mid" } properties.angle = { value = tonumber(showValues.angle) } properties.baseline.value = "middle" if not tonumber(showValues.offset) then properties.radius.offset = 4 end end

if radiusScale then properties.radius.scale = radiusScale.name properties.radius.field = radiusScale.domain.field else properties.radius.value = outerRadius end end

if properties then if showValues.format then local template = "datum.y" if yType == "integer" or yType == "number" then template = template .. "|number:'" .. showValues.format .. "'"			elseif yType == "date" then template = template .. "|time:" .. showValues.format .. "'"			end properties.text = { template = "" } else properties.text = { field = "y" } end

local textmarks = {			type = "text", properties = {				enter = properties }		}		if chartvis.from then textmarks.from = copy(chartvis.from) end

return textmarks end end

local function getSymbolMarks(chartvis, symSize, symShape, symStroke, noFill, alphaScale)

local symbolmarks symbolmarks = {		type = "symbol", properties = {			enter = {				x = { scale = "x", field = "x" }, y = { scale = "y", field = "y" }, strokeWidth = { value = symStroke }, stroke = { scale = "color", field = "series" }, fill = { scale = "color", field = "series" }, }		}	}	if type(symShape) == "string" then symbolmarks.properties.enter.shape = { value = symShape } end if type(symShape) == "table" then symbolmarks.properties.enter.shape = { scale = "symShape", field = "series" } end if type(symSize) == "number" then symbolmarks.properties.enter.size = { value = symSize } end if type(symSize) == "table" then symbolmarks.properties.enter.size = { scale = "symSize", field = "series" } end if noFill then symbolmarks.properties.enter.fill = nil end if alphaScale then symbolmarks.properties.enter.fillOpacity = { scale = "transparency", field = "series" } symbolmarks.properties.enter.strokeOpacity = { scale = "transparency", field = "series" } end if chartvis.from then symbolmarks.from = copy(chartvis.from) end return symbolmarks end

local function getAxes(xTitle, xAxisFormat, xAxisAngle, xType, xGrid, yTitle, yAxisFormat, yType, yGrid, chartType) local xAxis, yAxis if chartType ~= "pie" then if xType == "integer" then xAxisFormat = "d" end --		if not xAxisFormat then xAxisFormat = "d" end xAxis = {			type = "x", scale = "x", title = xTitle, format = xAxisFormat, grid = xGrid }		if xAxisAngle then local xAxisAlign if xAxisAngle < 0 then xAxisAlign = "right" else xAxisAlign = "left" end xAxis.properties = {				title = {					fill = { value = persistentGrey } },				labels = {					angle = { value = xAxisAngle }, align = { value = xAxisAlign }, fill = { value = persistentGrey } },				ticks = {					stroke = { value = persistentGrey } },				axis = {					stroke = { value = persistentGrey }, strokeWidth = { value = 2 } },				grid = {					stroke = { value = persistentGrey } }			}		else xAxis.properties = {				title = {					fill = { value = persistentGrey } },				labels = {					fill = { value = persistentGrey } },				ticks = {					stroke = { value = persistentGrey } },				axis = {					stroke = { value = persistentGrey }, strokeWidth = { value = 2 } },				grid = {					stroke = { value = persistentGrey } }			}		end

if yType == "integer" then yAxisFormat = "d" end if not yAxisFormat then yAxisFormat = "d" end yAxis = {			type = "y", scale = "y", title = yTitle, format = yAxisFormat, grid = yGrid }		yAxis.properties = {			title = {				fill = { value = persistentGrey } },			labels = {				fill = { value = persistentGrey } },			ticks = {				stroke = { value = persistentGrey } },			axis = {				stroke = { value = persistentGrey }, strokeWidth = { value = 2 } },			grid = {				stroke = { value = persistentGrey } }		}	end

return xAxis, yAxis end

local function getLegend(legendTitle, chartType, outerRadius) local legend = {		fill = "color", stroke = "color", title = legendTitle, }	legend.properties = { title = { fill = { value = persistentGrey }, },		labels = { fill = { value = persistentGrey }, },	}	if chartType == "pie" then legend.properties = { -- move legend from center position to top legend = { y = { value = -outerRadius }, },			title = { fill = { value = persistentGrey } },			labels = { fill = { value = persistentGrey }, },		}	end return legend end

function p.chart(frame) -- chart width and height local graphwidth = tonumber(frame.args.width) or 200 local graphheight = tonumber(frame.args.height) or 200 -- chart type local chartType = frame.args.type or "line" -- interpolation mode for line and area charts: linear, step-before, step-after, basis, basis-open, basis-closed (type=line only), bundle (type=line only), cardinal, cardinal-open, cardinal-closed (type=line only), monotone local interpolate = frame.args.interpolate -- mark colors (if no colors are given, the default 10 color palette is used) local colorString = frame.args.colors if colorString then colorString = string.lower(colorString) end local colors = stringArray(colorString) -- for line charts, the thickness of the line; for pie charts the gap between each slice local linewidth = tonumber(frame.args.linewidth) local linewidthsString = frame.args.linewidths local linewidths if linewidthsString and linewidthsString ~= "" then linewidths = numericArray(linewidthsString) or false end -- x and y axis caption local xTitle = frame.args.xAxisTitle or frame.args.xaxistitle local yTitle = frame.args.yAxisTitle or frame.args.yaxistitle -- x and y value types local xType = frame.args.xType or frame.args.xtype local yType = frame.args.yType or frame.args.ytype -- override x and y axis minimum and maximum local xMin = frame.args.xAxisMin or frame.args.xaxismin local xMax = frame.args.xAxisMax or frame.args.xaxismax local yMin = frame.args.yAxisMin or frame.args.yaxismin local yMax = frame.args.yAxisMax or frame.args.yaxismax -- override x and y axis label formatting local xAxisFormat = frame.args.xAxisFormat or frame.args.xaxisformat local yAxisFormat = frame.args.yAxisFormat or frame.args.yaxisformat local xAxisAngle = tonumber(frame.args.xAxisAngle) or tonumber(frame.args.xaxisangle) -- x and y scale types local xScaleType = frame.args.xScaleType or frame.args.xscaletype local yScaleType = frame.args.yScaleType or frame.args.yscaletype -- log scale require minimum > 0, for now it's no possible to plot negative values on log - TODO see: https://www.mathworks.com/matlabcentral/answers/1792-log-scale-graphic-with-negative-value --	if xScaleType == "log" then --		if (not xMin or tonumber(xMin) <= 0) then xMin = 0.1 end --		if not xType then xType = "number" end --	end --	if yScaleType == "log" then --		if (not yMin or tonumber(yMin) <= 0) then yMin = 0.1 end --		if not yType then yType = "number" end --	end

-- show grid local xGrid = frame.args.xGrid or frame.args.xgrid or false local yGrid = frame.args.yGrid or frame.args.ygrid or false -- for line chart, show a symbol at each data point local showSymbols = frame.args.showSymbols or frame.args.showsymbols local symbolsShape = frame.args.symbolsShape or frame.args.symbolsshape local symbolsNoFill = frame.args.symbolsNoFill or frame.args.symbolsnofill local symbolsStroke = tonumber(frame.args.symbolsStroke or frame.args.symbolsstroke) -- show legend with given title local legendTitle = frame.args.legend -- show values as text local showValues = frame.args.showValues or frame.args.showvalues -- pie chart radiuses local innerRadius = tonumber(frame.args.innerRadius) or tonumber(frame.args.innerradius) or 0 local outerRadius = math.min(graphwidth, graphheight) -- format JSON output local formatJson = frame.args.formatjson

-- get x values local x	x, xType, xMin, xMax = deserializeXData(frame.args.x, xType, xMin, xMax)

-- get y values (series) local yValues = {} local seriesTitles = {} for name, value in pairs(frame.args) do		local yNum if name == "y" then yNum = 1 else yNum = tonumber(string.match(name, "^y(%d+)$")) end if yNum then yValues[yNum] = value -- name the series: default is "y ". Can be overwritten using the "y Title" parameters. seriesTitles[yNum] = frame.args["y" .. yNum .. "Title"] or frame.args["y" .. yNum .. "title"] or name end end local y	y, yType, yMin, yMax = deserializeYData(yValues, yType, yMin, yMax)

-- create data tuples, consisting of series index, x value, y value local data if chartType == "pie" then -- for pie charts the second second series is merged into the first series as radius values data = convertXYToSingleSeries(x, y, xType, yType, { "y", "r" }) else data = convertXYToManySeries(x, y, xType, yType, seriesTitles) end

-- configure stacked charts local stacked = false local stats if string.sub(chartType, 1, 7) == "stacked" then chartType = string.sub(chartType, 8) if #y > 1 then -- ignore stacked charts if there is only one series stacked = true -- aggregate data by cumulative y values stats = {			name = "stats", source = "chart", transform = {			{				type = "aggregate", groupby = { "x" }, summarize = { y = "sum" } }		}		}		end end

-- create scales local scales = {}

local xscale = getXScale(chartType, stacked, xMin, xMax, xType, xScaleType) table.insert(scales, xscale) local yscale = getYScale(chartType, stacked, yMin, yMax, yType, yScaleType) table.insert(scales, yscale)

local colorScale = getColorScale(colors, chartType, #x, #y) table.insert(scales, colorScale)

local alphaScale = getAlphaColorScale(colors, y)	table.insert(scales, alphaScale)

local lineScale if (linewidths) and (chartType == "line") then lineScale = getLineScale(linewidths, chartType) table.insert(scales, lineScale) end

local radiusScale if chartType == "pie" and #y > 1 then radiusScale = getValueScale("r", 0, outerRadius) table.insert(scales, radiusScale) end

-- decide if lines (strokes) or areas (fills) should be drawn local colorField if chartType == "line" then colorField = "stroke" else colorField = "fill" end

-- create chart markings local chartvis = getChartVisualisation(chartType, stacked, colorField, #y, innerRadius, outerRadius, linewidth, alphaScale, radiusScale, lineScale, interpolate) local marks = { chartvis } -- text marks if showValues then if type(showValues) == "string" then -- deserialize as table local keyValues = mw.text.split(showValues, "%s*,%s*") showValues = {} for _, kv in ipairs(keyValues) do				local key, value = mw.ustring.match(kv, "^%s*(.-)%s*:%s*(.-)%s*$") if key then showValues[key] = value end end end

local chartmarks = chartvis if chartmarks.marks then chartmarks = chartmarks.marks[1] end local textmarks = getTextMarks(chartmarks, chartType, outerRadius, scales, radiusScale, yType, showValues) if chartmarks ~= chartvis then table.insert(chartvis.marks, textmarks) else table.insert(marks, textmarks) end end -- grids if xGrid then if xGrid == "0" then xGrid = false elseif xGrid == 0 then xGrid = false elseif xGrid == "false" then xGrid = false elseif xGrid == "n" then xGrid = false else xGrid = true end end if yGrid then if yGrid == "0" then yGrid = false elseif yGrid == 0 then yGrid = false elseif yGrid == "false" then yGrid = false elseif yGrid == "n" then yGrid = false else yGrid = true end end -- symbol marks if showSymbols then local chartmarks = chartvis if chartmarks.marks then chartmarks = chartmarks.marks[1] end

if type(showSymbols) == "string" then if showSymbols == "" then showSymbols = true else showSymbols = numericArray(showSymbols) end else showSymbols = tonumber(showSymbols) end

-- custom size local symSize if type(showSymbols) == "number" then symSize = tonumber(showSymbols*showSymbols*8.5) elseif type(showSymbols) == "table" then symSize = {} for k, v in pairs(showSymbols) do               symSize[k]=v*v*8.5 -- "size" acc to Vega syntax is area of symbol end else symSize = 50 end -- symSizeScale local symSizeScale = {} if type(symSize) == "table" then symSizeScale = getSymSizeScale(symSize) table.insert(scales, symSizeScale) end

-- custom shape if stringArray(symbolsShape) and #stringArray(symbolsShape) > 1 then symbolsShape = stringArray(symbolsShape) end local symShape = " " if type(symbolsShape) == "string" and shapes[symbolsShape] then symShape = shapes[symbolsShape] elseif type(symbolsShape) == "table" then symShape = {} for k, v in pairs(symbolsShape) do               if symbolsShape[k] and shapes[symbolsShape[k]] then symShape[k]=shapes[symbolsShape[k]] else symShape[k] = "circle" end end else symShape = "circle" end -- symShapeScale local symShapeScale = {} if type(symShape) == "table" then symShapeScale = getSymShapeScale(symShape) table.insert(scales, symShapeScale) end -- custom stroke local symStroke if (type(symbolsStroke) == "number") then symStroke = tonumber(symbolsStroke) -- TODO symStroke serialization --		elseif type(symbolsStroke) == "table" then --	 		symStroke = {} --	 		for k, v in pairs(symbolsStroke) do --               symStroke[k]=symbolsStroke[k] --               		--always draw x with stroke --				if symbolsShape[k] == "x" then symStroke[k] = 2.5 end --always draw x with stroke --				if symbolsNoFill[k] then symStroke[k] = 2.5 end --           end else symStroke = 0 --always draw x with stroke if symbolsShape == "x" then symStroke = 2.5 end --always draw x with stroke if symbolsNoFill then symStroke = 2.5 end end

--	TODO	-- symStrokeScale --	 	local symStrokeScale = {} --		if type(symStroke) == "table" then --			symStrokeScale = getSymStrokeScale(symStroke) --			table.insert(scales, symStrokeScale) --		end

local symbolmarks = getSymbolMarks(chartmarks, symSize, symShape, symStroke, symbolsNoFill, alphaScale) if chartmarks ~= chartvis then table.insert(chartvis.marks, symbolmarks) else table.insert(marks, symbolmarks) end end

-- axes local xAxis, yAxis = getAxes(xTitle, xAxisFormat, xAxisAngle, xType, xGrid, yTitle, yAxisFormat, yType, yGrid, chartType) -- legend local legend if legendTitle and tonumber(legendTitle) ~= 0 then legend = getLegend(legendTitle, chartType, outerRadius) end -- construct final output object local output = {		version = 2, width = graphwidth, height = graphheight, data = { data, stats }, scales = scales, axes = { xAxis, yAxis }, marks = marks, legends = { legend } }

local flags if formatJson then flags = mw.text.JSON_PRETTY end return mw.text.jsonEncode(output, flags) end

function p.mapWrapper(frame) return p.map(frame:getParent) end

function p.chartWrapper(frame) return p.chart(frame:getParent) end

function p.chartDebuger(frame) return  "\n\nchart JSON\n ".. p.chart(frame) .. " \n\n" .. debuglog end

-- Given an HTML-encoded title as first argument, e.g. one produced with , -- convert it into a properly URL path-encoded string -- This function is critical for any graph that uses path-based APIs, e.g. PageViews graph function p.encodeTitleForPath(frame) return mw.uri.encode(mw.text.decode(mw.text.trim(frame.args[1])), 'PATH') end

return p