Difference between revisions 4534214 and 4550047 on enwiki

This map was generated using all open-source software on an open-source unix operating system.  The map itself and the marking of the co-ordinates were done using [http://gmt.soest.hawaii.edu GMT] software, and conversion to png format was done using [http://www.imagemagick.org ImageMagick][sic].

GMT is a full-scale cartheographic set of tools, with extensive capabilities going far beyond latitude/longitude based map generation.