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| GeoCommunity Mailing List |
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| Mailing List Archives |
| Subject: | GISList: Seeking raster "stacker" |
| Date: |
03/27/2003 01:00:00 AM |
| From: |
Mick Wilson |
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Not strictly a 'geo'-data query but I figure this group is most familiar
with the nature of the task and possible solutions:
I have a 'stack' of like-sized Landsat raster images over a particular
water reservoir in Australia. I wish to crop these so that they are
commonly-coregistered to facilitate changes in water level over time. The
images are offest by differing numbers of rows and columns from any
arbitrary reference image that I select. I do not wish to simply 'grab and
move' in a tool like PhotoShop the images so that they align but rather add
or delete rows and columns to the actual images files so that row 1, column
1 of each image corresponds to the same pixel on the ground. No the images
are not geo-referenced or projected.
So: anyone know of a (public domain) tool that could help here? Failing
that, does anyone know of a tool for manually adding/removing a defined
number of rows/columns from a raster?
Thanx in advance.
Mick Wilson, Chief of Science Data and Technical Information Systems
Division of Early Warning and Assessment (DEWA)
United Nations Environment Programme
PO Box 30552 - Nairobi, Kenya
Tel: +254 2 623436
Fax: +254 2 624315
Email: mick.wilson@unep.org
Web www.unep.net, www.unep.org
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