Feature #682
Allow pslegend symbols to take color via CPT lookup
| Status: | Closed | Start date: | 2015-02-27 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assignee: |  Paul | % Done: | 100% | |
| Category: | - | |||
| Target version: | Candidate for next minor release | |||
| Platform: |
Description
This feature request derives from the comments in . Symbols plotted in pslegend expects a specific fill value (e.g., red, 128, or 255/13/56) or - to indicate no fill. Sometimes it is more convenient to use a CPT table to look up what a color should be via the z-value, as elsewhere in GMT. E.g.,
plots circles whose color is based on the cpt file and the 3rd input column's z-value). I propose two enhancements to pslegend:
gmt psxy -C<cpt> -Sc0.1i
plots circles whose color is based on the cpt file and the 3rd input column's z-value). I propose two enhancements to pslegend:
- A new option -A<cptfile> to specify a cptfile to be used for color lookup purposes.
- Symbol fill may be specified via z=<value>, which would trigger the CPT lookup and replace the entry with the corresponding color. Alternatively, perhaps just =<value> is enough [some flag is needed to distinguish shade entries from z-values].
History
#1
Updated by Paul about 5 years ago
- Status changed from New to Resolved
- % Done changed from 0 to 100
Implemented in r14140 (GMT 5.2.0 branch) via a new special command A cptfile. This is better than a command line option -A since a user can now switch from one cpt to another in the middle of a legend. I added the test script test/pslegend/zlegend.sh to make sure the new feature works.