Greg Ederer wrote:
Hi,
I am a GDAL newbie. I just got handed a group of files with the
following description:
description of the data
1) content:
rain == 10 day precipitation analysis by merging
GTS gauge observations and 3 kinds of satellite
estimates
(GPI,SSM/I, and AMSU)
2) coverage:
-40.00S -- 40.00N Northward;
20.00W -- 55.00E Eastward 751 grid points in east - west
direction
801 grid points in south - north direction
3) resolution:
0.1 deg lat x 0.1 deg lon
dekad
4) missing values
-999.0
I'd like to read and manipulate these files using GDAL. When I run
gdalinfo, I get something like the following:
Macintosh-4:RFE_dekedal gregederer$ gdalinfo 10day_precip.bin.1999121
ERROR 4: `10day_precip.bin.1999121' not recognised as a supported file
format.
gdalinfo failed - unable to open '10day_precip.bin.1999121'.
I suspect that GDAL requires some additional metadata in order to read
these files. Any suggestions?
Greg,
Assuming this is a raw binary file you can write a VRT "raw" description
for it based on:
http://www.gdal.org/gdal_vrttut.html
Read down in particular to the ".vrt Descriptions for Raw Files" section.
There are also several other methods for accomplishing something similar.
In your case I'd assume the file is 751x801 x 1band x Float32 with
ImageOffset=0, PixelOffset=4, LineOffset = 3004 and ByteOrder LSB.
Best regards,
--
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up | Frank Warmerdam, [email protected]
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush | Geospatial Programmer for Rent
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