Open ameraner opened 1 year ago
Off the top of my head, I don't think a mercator projection with a non-equator lat_0
is valid in PROJ. Right?
https://proj.org/en/9.2/operations/projections/merc.html
No mention of lat_0
. Not that that explains it, but yeah, maybe affecting it.
Is mercator implemented in SIFT or exactly speaking VisPy at all? If I remember correctly, VisPy has an own implementation of the projections and at least equidistant cylindrical (eqc) is missing.
Vispy does not implement any geographic projects. I wrote them into SIFT in shader language by modifying a OpenCL (not OpenGL) version of PROJ if I remember correctly. The main point here is that mercator with a lat_0
other than 0
is not very standard and is not implemented most likely.
Problem
It seems that areas in the mercator projection are not shown and used correctly. For example, when using the area
just a black screen appears on the main window:
If I try to resample a LEO granule that is over France to this area, and then switch to
plate carree
, I see that the data has been resampled to Mongolia:For reference, this is the plain Satpy result:
Additional Information