Module:Layers

local p = {} local getArgs = require('Module:Arguments').getArgs

function p.Filter(frame) local args = getArgs(frame) local layers = args[1] or '' local filteredLayers = 'W' -- Wikivoyage (i.e. OpenStreetMap) layer is the default one. --filteredLayers = extract(layers,'M') --Working alternatives: M (Mapnik) & R (Relief). Remove comment in case of temporary W server issue -- Add additional & acceptable layer parameters filteredLayers = filteredLayers .. extract(layers,'G') -- GPX file from Wikivoyage .. extract(layers,'P') -- POI from Wikivoyage NOT displayed .. extract(layers,'E') -- add search box inside the map .. extract(layers,'D') -- destination from Wikivoyage -- Disabling parameters that share user info (e.g. IP) with third parties		.. extract(layers,'S') -- hill shading from WM server		.. extract(layers,'H') -- hiking		.. extract(layers,'C') -- cycling		.. extract(layers,'B') -- border		.. extract(layers,'N') -- traffic network return filteredLayers end

function extract(layers, layer) if string.match(layers, layer) ~= nil then return string.match(layers, layer) else return '' end end

return p