[GRASSLIST:5458] Problem: lat/long data across the 180 meridian

[Brent Wood]

I have some seabed contours & some point (site) data east of New Zealand,
covering both sides of the 180 deg meridian.

I set the region to

ellipsoid:  wgs84
north:      42:16:48S
south:      45:07:40.8S
west:       172:02:45.6E
east:       172:50:02.4W

The point data (ascii xyz imported into sites) has x values of -160 to 190
(where 190 = -170 = 170W). GRASS only displays the data (in the monitor)
in the Eastern (<180) hemisphere (west side of the map). Converting the
sites to vectors allows all the points to display, both sides of 180.

Similarly, the vector contours (imported from a shapefile in mercator &
reprojected to lat long) display fine in the monitor.

I have converted the contours to a raster (v.surf.rst) but the resulting
raster map doesn't all display (just the base color of the minimum value)
not any cells East of 180 (ie, in the western hemisphere).

Much of my work involves data crossing the 180 meridian using lat/long, so
this functionality is critical for my use of GRASS.

If this is not a bug, is there a way to work with lat/long data/maps
(site, raster/vector) seamlessly across 180?


Appreciated,

  Brent Wood