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 19972 days, 12 hours, 7 minutes ago.