ppmglobe

ppmglobe strips input output

ppmglobe converts an equirectangular map projection image into a set of tapered strips that can be printed, cut out, and assembled into a paper globe. The number of strips determines how many pieces the globe is divided into, with more strips producing a smoother sphere.
The input image should be in equirectangular (plate carrée) projection, where longitude maps linearly to the x-axis and latitude to the y-axis. Each output strip is saved as a separate numbered PPM file. Part of the Netpbm toolkit.

STRIPS

Number of globe strips.

Input map image.

Output filename base.

Assumes equirectangular input. Part of Netpbm suite.

ppmglobe was created as part of Netpbm for paper globe generation.

ppm(5)