Download or view PetersProjection.frink in plain text format
/** This program demonstrates the use of the country polygons in
Country.frink to draw a map of the world. It can be readily altered to
draw the map in your favorite projection. This demonstrates the
Gall-Peters which I actually really dislike.
*/
use Country.frink
g = new graphics
g.stroke[0.001]
g.font["SansSerif", "bold", 0.5 degree]
// Iterate through all countries.
for [code, country] = Country.getCountryList[]
{
cc = new color[randomFloat[0,1], randomFloat[0,1], randomFloat[0,1], .8]
for poly = country.borders // Iterate through polygons in a country.
{
p = new filledPolygon // This polygon is the filled country
po = new polygon // This is the outline of the country
for [long, lat] = poly // Iterate through points in polygon
{
[x,y] = latLongToXYPeters[lat degree, long degree]
p.addPoint[x, -y]
po.addPoint[x, -y]
}
// Draw filled countries
g.color[cc]
g.add[p]
// Draw country outlines
g.color[0.2,0.2,0.2,.8]
g.add[po]
}
}
g.show[]
g.write["Peters.svg", 1000, 500]
g.write["Peters.png", 1000, 800]
latLongToXYPeters[lat, long] :=
{
s = sqrt[2]
R = 1
x = R pi long / (180 degrees s)
y = R s sin[lat]
return [x,y]
}
Download or view PetersProjection.frink in plain text format
This is a program written in the programming language Frink.
For more information, view the Frink
Documentation or see More Sample Frink Programs.
Alan Eliasen was born 19966 days, 18 hours, 48 minutes ago.