[Gdal-dev] Creating a color geotiff

[Ed McNierney]

Brian -
 
How did you conclude it was "garbage"?  There are quite a few programs
(such as the Windows "Image and Fax Viewer") that don't read them
correctly, or that fail to read certain data organization/formats.
 
    - Ed
Ed McNierney
President and Chief Mapmaker
TopoZone.com / Maps a la carte, Inc.
73 Princeton Street, Suite 305
North Chelmsford, MA  01863
ed at topozone.com
(978) 251-4242 


  _____  

From: Brian Marchand [mailto:bmarchand at ara.com] 
Sent: Wednesday, January 14, 2004 3:10 PM
To: gdal-dev at remotesensing.org
Subject: [Gdal-dev] Creating a color geotiff



Hello,

 

I'm trying to create geotiff files for the first time and I was
successful in creating a black and white geotiff. So I moved on to
creating a color one. I have a grid of RGB values so I created a data
set with 3 bands of type GDT_Byte.  I used RasterIO to write out a row
at a time. The result was garbage. 

 

Is there a specific order to writing out bands? I first tried writing a
row of red band, then a row of the green band, then the row of the blue
band. This didn't work so I dried writing all of rows for one band
before writing the next. Am I way off on this? How should I be doing
this?

 

Thanks in advance,

 

Brian Marchand

 

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