[GRASS-user] Projection transformation: LAEA -> UTM

[Jana K.]

Hello,
I need to transform a map from LAEA coordinates into UTM. I created a new
location with UTM projection. I used r.proj from within the new location,
but  running it,  I received the following error message:

Input Projection Parameters: +proj=laea +lat_0=52.0000000000
+lon_0=10.0000000000 +x_0=4321000.0000000000 +y_0=3210000.0000000000
+a=6378137 +rf=298.257222101 +no_defs +towgs84=0.000,0.000,0.000
Input Unit Factor: 1

Output Projection Parameters: +proj=utm +zone=34 +a=6378137
+rf=298.257223563 +no_defs +towgs84=0.000,0.000,0.000
Output Unit Factor: 1

Can't work with xy data

I don't understand it as the data are clearly georeferenced. Do I need to
make a transformation to lat/lon beforehand?

Now question 2:

My raster data are categorical (landuse), and during the projection
transformation I want to go from high resolution (100m) to rather crude
resolution (2500m). How GRASS handles such operation? I would expect that It
assigns the highest frequency value to the new cell (I mean if one new cell
contains 625 old pixels, it will be assigned the value which occurs most
frequently). Am I right? 

Thanks for your patience and help :-)

Jana
-- 
View this message in context: http://www.nabble.com/Projection-transformation%3A-LAEA--%3E-UTM-tp18565120p18565120.html
Sent from the Grass - Users mailing list archive at Nabble.com.