[GRASS-user] Importing a binary file: (a) why isn't the command logged in the maps history? (b) why is the resolution of the imported map slightly different than expected?

[Nikos Alexandris]

On Tue, 2008-03-18 at 11:04 -0300, Daniel Victoria wrote:
> Could it be a cell center / corner issue? Normally header information
> gives cell corners...

> Cheers
> Daniel

Daniel,

You are the Man! Correct!

1. gdalinfo /home/nik/grassdb/tmp/glc2000/Binary/GLC_EU_V2.bil -noct
Driver: EHdr/ESRI .hdr Labelled
Files: /home/nik/grassdb/tmp/glc2000/Binary/GLC_EU_V2.bil
       /home/nik/grassdb/tmp/glc2000/Binary/GLC_EU_V2.hdr
       /home/nik/grassdb/tmp/glc2000/Binary/GLC_EU_V2.stx
       /home/nik/grassdb/tmp/glc2000/Binary/GLC_EU_V2.clr
Size is 8064, 4256
Coordinate System is `'
Origin = (-25.995536206400001,71.995535723208150)
Pixel Size = (0.008928570000000,-0.008928570000000)
Corner Coordinates:
Upper Left  ( -25.9955362,  71.9955357) 
Lower Left  ( -25.9955362,  33.9955418) 
Upper Right (  46.0044523,  71.9955357) 
Lower Right (  46.0044523,  33.9955418) 
Center      (  10.0044580,  52.9955388) 
Band 1 Block=8064x1 Type=Byte, ColorInterp=Palette
  Min=0.000 Max=23.000 
  Minimum=0.000, Maximum=23.000, Mean=16.000, StdDev=5.800
  Color Table (RGB with 256 entries)

(Compare gdalinfo report with corner coordinates given in the file
projection_information.hdr )

2. cat projection_information.hdr
[...]
UL_X_COORDINATE:            -25.99107192
UL_Y_COORDINATE:             71.99107144
LR_X_COORDINATE:             45.99998799
LR_Y_COORDINATE:             34.00000609
[...]

3. r.in.bin in=GLC_EU_V2.bil out=glc2000_eu_test north=71.9955357
south=33.9955418 west=-25.9955362 east=46.0044523 rows=4256 cols=8064

4. r.info glc2000_eu_test -s
nsres=0:00:32.142852
ewres=0:00:32.142852


[ Youuuuuuuhohooohohooh........ !!!!]