Difference between revisions 4602233 and 4602243 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].

Please notice this is different form using graphics arts software tools to create maps or other pictures.  In fact, this map was created by issuing only 3 command lines from a unix shell, without even using any GUI -- and GUI was use only to view the final picture before uploading it.

GMT is a full-scalegeographic and cartheographic set of tools, with extensive capabilities going far beyond latitude/longitude based map generaand options.