-o should take the same parameters as -i

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.)

If you volunteered the week full time to code this up in a PR then we would of course consider it. I sometime wish that feature myself but as the coder I know I dont want to spend the time. Retired people have other hobbies too!

Well, I’m glad that it made sense.
I’ll leave implementation to some future generation.