[GRASS-user] problem with r.proj

GRASS GRASS user
1

I use r.proj to import a raster from a XY projection location to a LL projection location (90N, 90S, 180E, 180W) but when i use
d.rast to display the reprojected raster, i get a blank scree, even doing g.region rast=<reprojected_raster>. What am
I doing wrong ?

Help please :slight_smile:

2

Ana Soares napisa?(a):

I use r.proj to import a raster from a XY projection location to a LL
projection location (90N, 90S, 180E, 180W) but when i use
d.rast to display the reprojected raster, i get a blank scree, even doing
g.region rast=<reprojected_raster>. What am
I doing wrong ?

You are asking the questions wrong. Details please.

Maciek

3

Ana Soares wrote:

I use r.proj to import a raster from a XY projection location to a LL
projection location (90N, 90S, 180E, 180W) but when i use
d.rast to display the reprojected raster, i get a blank scree, even
doing g.region rast=<reprojected_raster>. What am
I doing wrong ?

try r.info and r.univar to see if there is any data in the output map.

You might need to set you region to the expected map extent *before*
running r.proj. try "r.proj -n"

another way is to use v.in.region in the source location and use v.proj
to get the raster's output extent.

?

Hamish