Idea for feature request:
-o should take the same parameters as -i
If I could do
$ echo -87.7447873 42.1192976 -87.7725841 42.1523955 |
gmt mapproject -AF+v -fg -o4+o-90
then I wouldn’t need to do
$ echo -87.7447873 42.1192976 -87.7725841 42.1523955 |
gmt mapproject -AF+v -fg | gmt math -i4+o-90 STDIN =
(But maybe there are too many features already.)