ሞድዩል:Map
Documentation for this module may be created at ሞድዩል:Map/doc
-- Credits:
-- Original from Wikivoyage
-- Developed for Kartographer version on Wikipedia by Vriullop @cawiki
-- Formulae:
-- CSGNetwork at http://www.csgnetwork.com/degreelenllavcalc.html via @enwiki
-- OpenStreetMap
-- Version: 20182705
local p = {}
-- Localization on [[Module:Map/i18n]]
local i18n = {
["coordinate-invalid"] = "Parameter $1 is an invalid value of \"latitude,longitude\".",
["type-invalid"] = "Type $1 is invalid. Use mapframe or maplink.",
["geotype-invalid"] = "Geotype $1 is an invalid value.",
["ids-invalid"] = "Parameter ids $1 is invalid.",
["polygon-required-points"] = "A polygon requires a minimum of 4 coordinate points.",
["polygon-not-closed"] = "A closed polygon requires last point equal to first one.",
['ids-not-found'] = "Ids not found for external data.",
['not-from-content-page'] = "Do not invoke from content page. Use a template or use a module subpage like /sandbox for testing .",
-- local categories
['cat-several-features'] = "",
['cat-linestring-drawn'] = "",
['cat-polygon-drawn'] = "",
}
local cat = {['cat-several-features'] = false, ['cat-linestring-drawn'] = false, ['cat-polygon-drawn'] = false}
-- Credit to http://stackoverflow.com/a/1283608/2644759, cc-by-sa 3.0
local function tableMerge(t1, t2)
for k, v in pairs(t2) do
if type(v) == "table" then
if type(t1[k] or false) == "table" then
tableMerge(t1[k] or {}, t2[k] or {})
else
t1[k] = v
end
else
t1[k] = v
end
end
return t1
end
local function loadI18n()
local exist, res = pcall(require, "Module:Map/i18n")
if exist and next(res) ~= nil then
tableMerge(i18n, res.i18n)
end
end
loadI18n()
local errormessage
local function printError(key, par)
-- just print first error
errormessage = errormessage or ('<span class="error">' .. (par and mw.ustring.gsub(i18n[key], "$1", par) or i18n[key]) .. '</span>')
end
-- Convert coordinates input format to geojson table
local function parseGeoSequence(data, geotype)
local coordsGeo = {}
for line_coord in mw.text.gsplit(data, ':', true) do -- Polygon - linearRing:linearRing...
local coordsLine = {}
for point_coord in mw.text.gsplit(line_coord, ';', true) do -- LineString or MultiPoint - point;point...
local valid = false
local val = mw.text.split(point_coord, ',', true) -- Point - lat,lon
-- allow for elevation
if #val >= 2 and #val <= 3 then
local lat = tonumber(val[1])
local lon = tonumber(val[2])
if lat ~= nil and lon ~= nil then
table.insert(coordsLine, {lon, lat})
valid = true
end
end
if not valid and point_coord ~= '' then printError('coordinate-invalid', point_coord) end
end
if geotype == 'Polygon' then
if #coordsLine < 4 then
printError('polygon-required-points')
elseif table.concat(coordsLine[1]) ~= table.concat(coordsLine[#coordsLine]) then
printError('polygon-not-closed')
end
end
table.insert(coordsGeo, coordsLine)
end
if geotype == 'Point' then
coordsGeo = coordsGeo[1][1]
elseif geotype == "LineString" or geotype == "MultiPoint" then
coordsGeo = coordsGeo[1]
elseif geotype ~= 'Polygon' then
printError('geotype-invalid', geotype)
end
return coordsGeo
end
-- data Point - {lon,lat}
-- data LineString - { {lon,lat}, {lon,lat}, ... }
-- data Polygon - { { {lon,lat}, {lon,lat} }, { {lon,lat}, {lon,lat} }, ... }
-- output as LineString format
local function mergePoints(stack, merger)
if merger == nil then return stack end
for _, val in ipairs(merger) do
if type(val) == "number" then -- Point format
stack[#stack + 1] = merger
break
elseif type(val[1]) == "table" then -- Polygon format
for _, val2 in ipairs(val) do
stack[#stack + 1] = val2
end
else -- LineString format
stack[#stack + 1] = val
end
end
return stack
end
local function getCoordBounds(data)
local latN, latS = -90, 90
local lonE, lonW = -180, 180
for i, val in ipairs(data) do
latN = math.max(val[2], latN)
latS = math.min(val[2], latS)
lonE = math.max(val[1], lonE)
lonW = math.min(val[1], lonW)
end
return latN, latS, lonE, lonW
end
local function getCoordCenter(data)
local latN, latS, lonE, lonW = getCoordBounds(data)
local latCenter = latS + (latN - latS) / 2
local lonCenter = lonW + (lonE - lonW) / 2
return lonCenter, latCenter
end
-- meters per degree by latitude
local function mxdByLat(lat)
local latRad = math.rad(lat)
-- see [[Geographic coordinate system#Expressing latitude and longitude as linear units]], by CSGNetwork
local mxdLat = 111132.92 - 559.82 * math.cos(2 * latRad) + 1.175 * math.cos(4 * latRad) - 0.023 * math.cos(6 * latRad)
local mxdLon = 111412.84 * math.cos(latRad) - 93.5 * math.cos(3 * latRad) + 0.118 * math.cos(5 * latRad)
return mxdLat, mxdLon
end
-- Calculate zoom to fit coordinate bounds into height and width of frame
local function getZoom(data, height, width)
local lat1, lat2, lon1, lon2 = getCoordBounds(data)
local latMid = (lat1 + lat2) / 2 -- mid latitude
local mxdLat, mxdLon = mxdByLat(latMid)
-- distances in meters
local distLat = math.abs((lat1 - lat2) * mxdLat)
local distLon = math.abs((lon1 - lon2) * mxdLon)
-- margin 100px in height and width, right upper icon is about 50x50px
local validHeight = math.max(height - 100, 100)
local validWidth = math.max(width - 100, 100)
-- maximum zoom fitting all points
local latRad = math.rad(latMid)
for zoom = 19, 0, -1 do
-- see https://wiki.openstreetmap.org/wiki/Zoom_levels#Metres_per_pixel_math
-- equatorial circumference 40 075 036 m: [[Equator#Exact length]]
local distLatFrame = 40075036 * validHeight * math.cos(latRad) / (2 ^ (zoom + 8))
local distLonFrame = 40075036 * validWidth * math.cos(latRad) / (2 ^ (zoom + 8))
if distLatFrame > distLat and distLonFrame > distLon then
return zoom
end
end
return 0
end
-- Geotype based on coordinates format pattern
local function findGeotype(coord)
local _, semicolons = string.gsub(coord, ';', '')
local firstcoord = string.match(coord, "[0-9%.%-]+%s*,%s*[0-9%.%-]+")
local lastcoord = string.match(string.reverse(coord), "[0-9%.%-]+%s*,%s*[0-9%.%-]+")
if firstcoord == nil or lastcoord == nil then
printError('coordinate-invalid', coord)
else
lastcoord = string.reverse(lastcoord)
end
if string.find(coord, ':') or (semicolons > 2 and firstcoord == lastcoord) then
return 'Polygon'
elseif semicolons > 0 then
return 'LineString' -- or MultiPoint
else
return 'Point'
end
end
local function fetchWikidata(id, snak)
-- snak is a table like {'claims', 'P625', 1, 'mainsnak', 'datavalue', 'value'}
-- see function ViewSomething on Module:Wikidata
local value
id = mw.text.trim(id)
if not string.find(id, "^Q%d+$") then
printError('ids-invalid', id)
else
value = mw.wikibase.getEntityObject(id)
for i in ipairs(snak) do
if value == nil then break end
value = value[snak[i]]
end
end
return value
end
-- Fetch coordinates from Wikidata for a list of comma separated ids
local function getCoordinatesById(ids)
if ids == nil then return end
local coord = {}
local snak = {'claims', 'P625', 1, 'mainsnak', 'datavalue', 'value'}
for idx in mw.text.gsplit(ids, '%s*,%s*') do
local value = fetchWikidata(idx, snak)
if value then
coord[#coord+1] = value.latitude .. ',' .. value.longitude
end
end
return #coord > 0 and table.concat(coord, ';') or nil
end
local function getBoundsById(ids, coordInput)
if ids == nil then return {} end
local coord = mw.text.split(coordInput, '%s*;%s*')
local id = mw.text.split(ids, '%s*,%s*')
if #coord ~= #id then return {} end
local bounds = {}
-- try to fetch Wikidata in this order: area, watershed area, population
local snak_area = {'claims', 'P2046', 1, 'mainsnak', 'datavalue', 'value'} -- area and unit
local snak_warea = {'claims', 'P2053', 1, 'mainsnak', 'datavalue', 'value'} -- area and unit
local snak_pop = {'claims', 'P1082', 1, 'mainsnak', 'datavalue', 'value'} -- population
local convert_area = {['Q712226'] = 1000000, ['Q35852'] = 10000, ['Q232291'] = 2589988.110336, ['Q81292'] = 4046.8564224,
['Q935614'] = 1600, ['Q857027'] = 0.09290304, ['Q21074767'] = 1138100, ['Q25343'] = 1} -- to square metres
-- query Wikidata: http://tinyurl.com/j8aez2g
for i = 1, #id do
local amount, unit, area
local value = fetchWikidata(id[i], snak_area) or fetchWikidata(id[i], snak_warea)
if value then
amount = tonumber(value.amount)
unit = string.match(value.unit, "(Q%d+)")
if convert_area[unit] then
area = amount * convert_area[unit]
end
end
if area == nil then
value = fetchWikidata(id[i], snak_pop)
if value then
amount = tonumber(value.amount)
-- average density estimated for populated areas: 100; see [[Population density]]
area = amount / 100 * 1000000
end
end
if area then
local radius = math.sqrt(area / math.pi) -- approximation with a circle
local latlon = mw.text.split(coord[i], '%s*,%s*')
local mxdLat, mxdLon = mxdByLat(latlon[1])
bounds[#bounds+1] = {latlon[2] + (radius / mxdLon), latlon[1] + (radius / mxdLat)} -- NE bound, geoJSON format
bounds[#bounds+1] = {latlon[2] - (radius / mxdLon), latlon[1] - (radius / mxdLat)} -- SW bound
end
end
return bounds
end
local function addCategories(geotype, i)
if not mw.title.getCurrentTitle().isContentPage then return end
if i > 2 and i18n["cat-several-features"] ~= '' then
cat["cat-several-features"] = true
end
if geotype == "LineString" and i18n["cat-linestring-drawn"] ~= '' then
cat["cat-linestring-drawn"] = true
elseif geotype == "Polygon" and i18n["cat-polygon-drawn"] ~= '' then
cat["cat-polygon-drawn"] = true
end
return
end
-- Main function
function p._tag(args)
local tagname = args.type or 'mapframe'
if tagname ~= 'maplink' and tagname ~= 'mapframe' then printError('type-invalid', tagname) end
local geojson
local tagArgs = {
text = args.text,
zoom = tonumber(args.zoom),
latitude = tonumber(args.latitude),
longitude = tonumber(args.longitude)
}
local defaultzoom = tonumber(args.default_zoom)
if tagname == 'mapframe' then
tagArgs.width = args.width or 300
tagArgs.height = args.height or 300
tagArgs.align = args.align or 'right'
if args.frameless ~= nil and tagArgs.text == nil then tagArgs.frameless = true end
else
tagArgs.class = args.class
end
if args['coordinates1'] == nil and args['geotype1'] == nil then -- single feature
args['coordinates1'] = args['coordinates'] or args[1]
if args['coordinates1'] == nil and args['latitude'] and args['longitude'] then
args['coordinates1'] = args['latitude'] .. ',' .. args['longitude']
elseif args['coordinates1'] == nil and not args.commons then
args['coordinates1'] = getCoordinatesById(mw.wikibase.getEntityIdForCurrentPage())
end
args['title1'] = args['title1'] or args['title']
args['image1'] = args['image1'] or args['image']
args['description1'] = args['description1'] or args['description']
args['geotype1'] = args['geotype1'] or args['geotype']
end
local externalData = {['geoshape'] = true, ['geomask'] = true, ['geoline'] = true}
local featureCollection = {['Point'] = true, ['MultiPoint'] = true, ['LineString'] = true, ['Polygon'] = true}
local myfeatures, myexternal, allpoints = {}, {}, {}
local i, j = 1, 1
while args['coordinates'..i] or externalData[args['geotype'..i]] do
local geotypex = args['geotype'..i] or args['geotype']
if geotypex ~= nil and not (featureCollection[geotypex] or externalData[geotypex]) then
printError('geotype-invalid', geotypex)
break
end
local mystack
if externalData[geotypex or ''] then
mystack = myexternal
j = #mystack + 1
mystack[j] = {}
mystack[j]['type'] = "ExternalData"
mystack[j]['service'] = geotypex
mystack[j]['ids'] = args['ids'..i] or args['ids'] or mw.wikibase.getEntityIdForCurrentPage()
if mystack[j]['ids'] == nil then printError('ids-not-found'); break end
local mycoordinates = args['coordinates'..i]
if mycoordinates == nil and (tagArgs.latitude == nil or tagArgs.longitude == nil or tagArgs.zoom == nil) then
mycoordinates = getCoordinatesById(mystack[j]['ids'])
end
if mycoordinates ~= nil then
local mypoints = getBoundsById(mystack[j]['ids'], mycoordinates)
if #mypoints == 0 then
mypoints = parseGeoSequence(mycoordinates, mycoordinates:find(';') and 'MultiPoint' or 'Point')
end
allpoints = mergePoints(allpoints, mypoints)
end
else
mystack = myfeatures
j = #mystack + 1
mystack[j] = {}
mystack[j]['type'] = "Feature"
mystack[j]['geometry'] = {}
mystack[j]['geometry']['type'] = geotypex or findGeotype(args['coordinates'..i])
mystack[j]['geometry']['coordinates'] = parseGeoSequence(args['coordinates'..i], mystack[j]['geometry']['type'])
allpoints = mergePoints(allpoints, mystack[j]['geometry']['coordinates'])
addCategories(mystack[j]['geometry']['type'], i)
end
mystack[j]['properties'] = {}
mystack[j]['properties']['title'] = args['title'..i] or (geotypex and geotypex .. i) or mystack[j]['geometry']['type'] .. i
if args['image'..i] then
args['description'..i] = (args['description'..i] or '') .. '[[File:' .. args['image'..i] .. '|300px]]'
end
mystack[j]['properties']['description'] = args['description'..i]
mystack[j]['properties']['marker-size'] = args['marker-size'..i] or args['marker-size']
mystack[j]['properties']['marker-symbol'] = args['marker-symbol'..i] or args['marker-symbol']
mystack[j]['properties']['marker-color'] = args['marker-color'..i] or args['marker-color']
mystack[j]['properties']['stroke'] = args['stroke'..i] or args['stroke']
mystack[j]['properties']['stroke-opacity'] = tonumber(args['stroke-opacity'..i] or args['stroke-opacity'])
mystack[j]['properties']['stroke-width'] = tonumber(args['stroke-width'..i] or args['stroke-width'])
mystack[j]['properties']['fill'] = args['fill'..i] or args['fill']
mystack[j]['properties']['fill-opacity'] = tonumber(args['fill-opacity'..i] or args['fill-opacity'])
i = i + 1
end
-- calculate defaults for static mapframe; maplink is dynamic
if (tagArgs.latitude == nil or tagArgs.longitude == nil) and #allpoints > 0 then
if tagname == "mapframe" or tagArgs.text == nil then -- coordinates needed for text in maplink
tagArgs.longitude, tagArgs.latitude = getCoordCenter(allpoints)
end
end
if tagArgs.zoom == nil then
if tagname == "mapframe" then
if #allpoints == 1 then
local currentId = mw.wikibase.getEntityIdForCurrentPage()
local coordInput = allpoints[1][2] .. ',' .. allpoints[1][1]
local mybounds = getBoundsById(currentId, coordInput) -- try to fetch by area
allpoints = mergePoints(allpoints, mybounds)
end
if #allpoints <= 1 then
tagArgs.zoom = defaultzoom or 9
else
tagArgs.zoom = getZoom(allpoints, tagArgs.height, tagArgs.width)
end
else
tagArgs.zoom = defaultzoom
end
end
local geojson = myexternal
if args.commons ~= nil then
geojson[#geojson+1] = {
type = "ExternalData",
service = "page",
title = args.commons,
}
end
if #myfeatures > 0 then
geojson[#geojson + 1] = {type = "FeatureCollection", features = myfeatures}
end
if args.debug ~= nil then
local html = mw.text.tag{name = tagname, attrs = tagArgs, content = mw.text.jsonEncode(geojson, mw.text.JSON_PRETTY)}
return 'syntaxhighlight', tostring(html) .. ' Arguments:' .. mw.text.jsonEncode(args, mw.text.JSON_PRETTY), {lang = 'json'}
end
return tagname, geojson and mw.text.jsonEncode(geojson) or '', tagArgs
end
function p.tag(frame)
if mw.title.new(frame:getParent():getTitle()).isContentPage and not mw.title.new(frame:getTitle()).isSubpage then
-- invoked from a content page and not invoking a module subpage
printError('not-from-content-page')
end
local getArgs = require('Module:Arguments').getArgs
local args = getArgs(frame)
local tag, geojson, tagArgs = p._tag(args)
local categories = ''
if errormessage then
categories = mw.message.new('Kartographer-broken-category'):inLanguage(mw.language.getContentLanguage().code):plain()
return errormessage .. '[[Category:' .. categories .. ']]'
end
for k, v in pairs(cat) do
if v then
categories = categories .. '[[Category:' .. i18n[k] .. ']]'
end
end
return frame:extensionTag(tag, geojson, tagArgs) .. categories
end
return p