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| Subject: | RE: [gislist] tif image problems |
| Date: |
09/23/2004 08:20:01 AM |
| From: |
Richard Nicoll |
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Hi Brandon
ESRI produce free GIS viewer software "ArcExplorer" which I seem to
recall opens geotiffs and world files.
Free download: http://www.esri.com/software/arcexplorer/download.html
Otherwise you may wish to check the format of your world files (tfw's)
in a text editor, the spec is (on individual lines):
* Dimension of pixel in map units in x
* Rotation for row (usually 0)
* Rotation for column (usually 0)
* Dimension of pixel in map units in y, as negative number
* x-coord of centre of upper left pixel in map units
* y-coord of centre of upper left pixel in map units
It's perhaps also worth mentioning to avoid confusion, a 'georeferenced
tif' will not require a separate world file as the image itself stores
the coords. If you have been provided world files, then your tifs by
definition are not georeferenced themselves.
Rich
-----Original Message-----
From: gislist-bounces@lists.geocomm.com
[mailto:gislist-bounces@lists.geocomm.com]On Behalf Of Brandon Lemire
Sent: 23 September 2004 13:17
To: gislist@lists.thinkburst.com
Subject: [gislist] tif image problems
Hey all,
New to posting and have a question about georeferenced tif images. I
have been sent four along with their .tfw files. Using Autocad Map I
attempted to import them and got a fatal error. I have uploaded all the
files twice and still cannot get
them to open. Any suggestions as to other viewers that will handle
georefed tif's? I am going to try ESRI utilities this evening but had
no luck with them last time either.
Brandon
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