Re: Azimuthal Equidistant projection problem

Hi Juan-

Yes, there were in fact two old bugs here, affecting both GMT 4 & 5:

1. The clip path for the entire region was hardwired to be a circle when -Je/E was used, regardless of -R.  In effect, it assumed -Rg.  This caused the blue circle.
2. The search that determines the min/max w/e/s/n for a region specified by -R...r did not check if either the S or N pole happened to be the antipode of the -Je/E pole [your case].  That caused a bad w/e/s/n setting and that gridline did not happen.

Updated in both GMT 4 (r10233) and GMT 5 (r13201); please update and check if your other issues further down (psxy/grdimage) still need attention.  If so please file a bug report on the tracker.

Paul

On May 24, 2014, at 5:56 PM, Juan Diaz-Naveas <[email protected]> wrote:

> Dear GMT users,
> 
> This might be a bug, but before reporting as that I want to share the strange behavior of the Azimuthal Equidistant projection.
> 
> 
> The followind command (when -R is specififed as -Rlonmin/lonmax/latmin/latmax) produces an output, but the -Sblue option draws also a strange circle:
> 
> pscoast -B10g10 -Je-70/-90/1:15000000 -R-95/-60/-75/-55 -Di -Ggreen -Sblue -P -Uc -V > az_eq_scale.ps
> 
> The next command (when -R is specified as -Rlonmin/latmin/lonmax/latmaxr) behaves ALMOST correctly, because the 60°W meridian is NOT drawn:
> 
> pscoast -B10g10 -Je-70/-90/1:15000000 -R-95/-75/-60/-55r -Di -Ggreen -Sblue -P -Uc -V > az_eq_scale_r.ps
> 
> I attach both postscript files to let you verify this.
> 
> Actually the problem becomes bigger when you add psxy or grdimage commands, but for now I want to solve this very basic issue.
> 
> Does anyone have an idea on how to solve this problem?
> 
> Any help will be very much appreciated. Best wishes
> 
> Juan Diaz-Naveas
> 
> Mailing list for GMT discussions of all kinds. If you are not sure you have found a bug, discuss it here first. To formally report bugs or request features, please register and add New Issue on gmt.soest.hawaii.edu To unsubscribe, send the message "signoff gmt-help" to [email protected] Note: gmt-help will become obsolete on Sept 1, 2014 - please use forum on gmt.soest.hawaii.edu instead. <az_eq_scale.ps><az_eq_scale_r.ps>

Mailing list for GMT discussions of all kinds.  If you are not sure you have found a bug, discuss it here first.
To formally report bugs or request features, please register and add New Issue on gmt.soest.hawaii.edu
To unsubscribe, send the message "signoff gmt-help" to [email protected]
Note: gmt-help will become obsolete on Sept 1, 2014 - please use forum on gmt.soest.hawaii.edu instead.