Module:Political choropleth legend

Module documentationviewedithistorypurge

Usage

This module implements the {{Political choropleth legend}} template. Please see the template page for usage instructions.

Updating the module

The political parties contained in this article are stored under /data and originate from the color schemes in WP:USALEGEND and Wikipedia:WikiProject Elections and Referendums/USA legend colors/proposals. All ranges matching the format "50-60" will be rendered as "50–60%" while "90" will be rendered as ">90%". As an example:

["Yes"] = {
	["50-60"] = "#B6C8D9",
	["60-70"] = "#7D9CBB",
	["70-80"] = "#47729E",
	["80-90"] = "#28497C",
	["90"] = "#2B2457"
}

will render as

  50–60%

  60–70%

  70–80%

  >90%

The above documentation is transcluded from Module:Political choropleth legend/doc. (edit | history)
Editors can experiment in this module's sandbox (create | mirror) and testcases (create) pages.
Subpages of this module.

local p = {}
local data = mw.loadData('Module:Political choropleth legend/data')

local function create_error(error_message) --- from [[Module:Political party]]
	return string.format('<strong class="error">%s</strong>', error_message)
end

function p._create_legend(frame, args)
	if not args[1] then
		return create_error("parameter 1 should be a party name")
	end
	local party_name = args[1]
	local party_data = data[party_name]
	if not party_data then
		return create_error("unknown political party " .. party_name)
	end
	local legend_template = args["template"] or "legend"
	
	local output = ""
	
	for i, range in ipairs(args) do
		if i > 1 then
			local range_color = party_data[range]
			if not range_color then
				return create_error("missing range" .. range .. "for political party " .. party_name)
			end
			
			if range == "90" then range = ">90" end -- replace this with a translation table if it gets any more complicated
			range = range:gsub("-", "–") .. "%"
			
			output = output .. frame:expandTemplate{ title = legend_template, args = { range_color, range } }
		end
	end
	
	return output
end

function p.create_legend(frame)
	-- Initialise and populate variables
	local args = require("Module:Arguments").getArgs(frame, {wrappers = "Template:Political choropleth legend"})
	
	return p._create_legend(frame, args)
end

return p