adding illumination to hemisphere (-JG)
Pasquale Tricarico <[email protected]>
| Newsgroups | gmane.comp.gis.gmt.user |
|---|---|
| Message-ID | <CALFECzG7AqzgLb8j5sB-=mjSeOrYNdVVRD6Bd5V_S2HyD_hOYA@mail.gmail.com> |
Hi, I am using GMT 4.5.12, using grdimage and -JG projection to obtain an hemisphere view of a planet. I would like to add illumination, i.e. by specifying the lat/lon of the sun, so that the correct part of the hemisphere is illuminated and the other part is much darker, but still visible. It looks like grdgradient may not be able to do this as it would have a fixed azimuth for illumination, maybe by using grdmath? Any suggestions will be greatly appreciated. Regards, Pasquale -- Pasquale Tricarico, Ph.D. Planetary Science Institute http://orbit.psi.edu/~tricaric To unsubscribe, send the message "signoff gmt-help" to [email protected]