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Module:Pop density - Revision history
2026-05-02T21:16:32Z
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Admin: 1 revision imported: Mitul Imported from Wikipedia
2021-04-11T19:17:23Z
<p>1 revision imported: Mitul Imported from Wikipedia</p>
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Admin
https://catalog.jinharsh.co.in/index.php?title=Module:Pop_density&diff=4628&oldid=prev
setup>Frietjes: fix double sort key
2019-04-28T13:31:39Z
<p>fix double sort key</p>
<p><b>New page</b></p><div>--<br />
-- This module implements {{Pop density}}<br />
--<br />
local p = {}<br />
local math_module = require( "Module:Math" )<br />
local precision = math_module._precision<br />
local sortkey = require( "Module:Sortkey" )<br />
<br />
local function rnd(num, digits)<br />
-- This function implements {{rnd}}<br />
return math_module._precision_format(tostring(num), tostring(digits))<br />
end<br />
local unitnames = {<br />
["km²"] = "km2",<br />
["sqkm"] = "km2",<br />
["km2"] = "km2",<br />
["mi2"] = "sqmi",<br />
["sqmi"] = "sqmi",<br />
["acres"] = "acre",<br />
["acre"] = "acre",<br />
["ha"] = "ha",<br />
["dunam"] = "dunam",<br />
["m²"] = "m2",<br />
["sqm"] = "m2",<br />
["m2"] = "m2"<br />
}<br />
local unitmult = {<br />
["km2"] = 1000000,<br />
["sqmi"] = 2589988.110336,<br />
["acre"] = 4046.8564224,<br />
["ha"] = 10000,<br />
["dunam"] = 1000,<br />
["m2"] = 1<br />
}<br />
local unitstr = {<br />
["km2"] = 'km<sup>2</sup>',<br />
["sqmi"] = 'sq&nbsp;mi',<br />
["acre"] = 'acre',<br />
["ha"] = 'ha',<br />
["dunam"] = 'dunam',<br />
["m2"] = 'm<sup>2</sup>'<br />
}<br />
<br />
local function popdensity(pop, area1, areaunit1, areaunit2, prec, disp, flip)<br />
local dens1, dens1sort, prec1<br />
local dens2, dens2sort, prec2<br />
local str1, str2 = '', ''<br />
local uniterror = '<sup>[[Template:Pop density|?Unknown unit?]]</sup>[[Category:Pop density using unsupported units]]'<br />
<br />
if(pop ~= '' and area1 ~= '') then<br />
-- pop and area are defined<br />
local popnum = tonumber(pop)<br />
if not popnum then<br />
error(string.format('Unable to convert population "%s" to a number', pop), 2)<br />
end<br />
local area1num = tonumber(area1)<br />
if not area1num then<br />
error(string.format('Unable to convert area "%s" to a number', area1), 2)<br />
end<br />
local dens1num = popnum/area1num<br />
<br />
local unit1 = unitnames[areaunit1] or nil<br />
local unit2 = unitnames[areaunit2] or nil<br />
<br />
prec1 = (prec ~= '') and tonumber(prec) <br />
or (1+math.log10(2*area1/(1/10^precision(pop)+pop/area1/10^precision(area1))))<br />
dens1 = rnd(dens1num, math.floor(prec1 + 0.5))<br />
dens1sort = '<span style="display:none" data-sort-value="'<br />
.. sortkey._sortKeyForNumber(dens1num) .. '♠"></span>'<br />
if (unit1) then<br />
str1 = '/' .. unitstr[unit1]<br />
if(unit2) then<br />
-- convert<br />
local mult = unitmult[unit2]/unitmult[unit1]<br />
prec2 = prec1 - math.log10(mult)<br />
dens2 = rnd(dens1num*mult, math.floor(prec2 + 0.5))<br />
dens2sort = '<span style="display:none" data-sort-value="'<br />
.. sortkey._sortKeyForNumber(dens1num*mult) .. '♠"></span>'<br />
str2 = '/' .. unitstr[unit2]<br />
elseif(areaunit2 ~= '') then<br />
if( disp ~= 'num' ) then<br />
dens2 = '?'<br />
else<br />
dens2 = '?' .. uniterror<br />
end<br />
str2 = '/' .. areaunit2 .. uniterror<br />
end<br />
elseif(areaunit1 ~= '') then<br />
if( disp ~= 'num' ) then<br />
dens2 = '?'<br />
else<br />
dens2 = '?' .. uniterror<br />
end<br />
if(unit2) then<br />
str2 = '/' .. unitstr[unit2]<br />
elseif(areaunit2 ~= '') then<br />
str2 = '/' .. areaunit2 .. uniterror <br />
end<br />
str1 = '/' .. areaunit1 .. uniterror<br />
end<br />
<br />
-- form output<br />
if( str2 ~= '' ) then<br />
-- has a converted unit<br />
if( disp ~= 'num' and disp ~= 'table' ) then<br />
-- display input and output density numbers with units<br />
if( flip == 'on' ) then<br />
return (dens2sort or '') .. dens2 .. str2 .. ' (' .. dens1 .. str1 .. ')'<br />
else<br />
return (dens1sort or '') .. dens1 .. str1 .. ' (' .. dens2 .. str2 .. ')'<br />
end<br />
elseif( disp == 'table') then<br />
dens1 = (dens1sort or '') .. dens1<br />
dens2 = (dens2sort or '') .. dens2<br />
return pop .. '||' .. area1 .. '||' .. dens1 .. '||' .. dens2<br />
else<br />
-- display output density number without unit<br />
return dens2<br />
end<br />
else<br />
-- no converted unit<br />
if( disp ~= 'num' and disp ~= 'table' ) then<br />
-- display input density number with unit <br />
return (dens1sort or '') .. dens1 .. str1 <br />
elseif( disp == 'table') then<br />
return pop .. '||' .. area1 .. '||' ..(dens1sort or '') .. dens1<br />
else<br />
-- display input density number without unit<br />
return dens1<br />
end<br />
end<br />
end<br />
return ''<br />
end<br />
<br />
function p.density(frame)<br />
local args = (frame.args[3] ~= nil) and frame.args or frame:getParent().args<br />
return popdensity(<br />
args[1] or '', args[2] or '', args[3] or '', args[4] or '', <br />
args['prec'] or '', args['disp'] or '', args['flip'] or ''<br />
)<br />
end<br />
<br />
return p</div>
setup>Frietjes