[GRASS-user] Error in Projection from Landsat images

Kim Besson kimbesson1981 at gmail.com
Fri May 7 06:36:19 EDT 2010


Greetings
This topic was being discussed in converting Vector to raster and them I
realized that it might be better to change it to here:
I did
gdalinfo to my landsat data is this:
Driver: GTiff/GeoTIFF
Files: L.tif
Size is 7662, 7109
Coordinate System is:
LOCAL_CS[" Geocoding information not available Projection Name =
ETRS_1989_Transverse_Mercator Units = meters Geo",
    UNIT["unknown",1]]
Origin = (-52163.169232331842068,23020.214927441673353)
Pixel Size = (30.000000000000000,-30.000000000000000)
Metadata:
  TIFFTAG_SOFTWARE=IMAGINE TIFF Support
Copyright 1991 - 1999 by ERDAS, Inc. All Rights Reserved
@(#)$RCSfile: etif.c $ $Revision: 1.10.1.9.1.9.2.11 $ $Date: 2004/09/15
18:42:01EDT $
  TIFFTAG_XRESOLUTION=1
  TIFFTAG_YRESOLUTION=1
  TIFFTAG_RESOLUTIONUNIT=1 (unitless)
  AREA_OR_POINT=Area
Image Structure Metadata:
  INTERLEAVE=PIXEL
Corner Coordinates:
Upper Left  (  -52163.169,   23020.215)
Lower Left  (  -52163.169, -190249.785)
Upper Right (  177696.831,   23020.215)
Lower Right (  177696.831, -190249.785)
Center      (   62766.831,  -83614.785)
Band 1 Block=64x64 Type=Byte, ColorInterp=Red
Band 2 Block=64x64 Type=Byte, ColorInterp=Green
Band 3 Block=64x64 Type=Byte, ColorInterp=Blue
Band 4 Block=64x64 Type=Byte, ColorInterp=Undefined
Band 5 Block=64x64 Type=Byte, ColorInterp=Undefined
Band 6 Block=64x64 Type=Byte, ColorInterp=Undefined

It has geographic information right? and it's supposed to be recognized by
GRASS.
So I decided to create a new Location.
1- Define name of the location (landsat02)
2- Choose method for creating a new location: Read Projection and datums
from a georreferenced file==> I select the file
I choose no in defining region
3- Enter into location
4- do g.region -p and I get:
projection: 0 (x,y)
zone:       0
north:      23020.21492744
south:      -190249.78507256
west:       -52163.16923233
east:       177696.83076767
nsres:      30
ewres:      30
rows:       7109
cols:       7662
cells:      54469158

Everything else seems ok except the Projection that is (x,y). This means
that it's not recognizing the coordinate system or am I doing something
wrong?

Thank you
Kim
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