I am sending this because I just realized that I posted w/ the wrong
subject so that it gets filed correctly in the archive:
This is a great listserv!
Chaitanya using a vrt worked so thank for that tip. Also, it must be the
case as Jukka says that img isn't holding the control points. But as
suggested a GeoTiff (and VRT) work fine.
Thanks so much for your help.
Cheers,
Derek
On 5/25/2012 3:00 AM, Chaitanya kumar CH wrote:
Derek,
Please provide the gdalinfo output of the img file.
Also, try this:
Create a vrt file instead of a HFA using the same gdal_translate
command. See if gdalwarp works with the vrt file.
On Fri, May 25, 2012 at 7:17 AM, jdmorgan <jdmor...@unca.edu
<mailto:jdmor...@unca.edu>> wrote:
Hello,
I am attempting to georeference and project a jpeg image using
only gdal tool.I have georeferenced the jpeg using the following
command:
gdal_translate -a_srs EPSG:102719-of HFA -gcp 0.0 0.0
-82.5586187839508 35.59414007259327 -gcp 0.0 410.0
-82.55858659744263 35.5937998255945 -gcp 520.0 0.0
-82.55741715431213 35.594340730401775 -gcp 520.0 410.0
-82.55728840827942 35.5940266570877NCDCLogo.jpg NCDCLogo.img
The command run fine and produces a img file however it does not
line up with similarly project layer per the gcp’s.When I check
the projection information the file shows to be unprojected.
Further, when I attempt to project the resulting raster with
gdalwarp I get the following errors:
“There is no affine transformation and no GCPs.”
Any pointers here would be greatly appreciated.
Thanks,
Derek
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Best regards,
Chaitanya kumar CH.
+91-9494447584
17.2416N 80.1426E
--
Derek @ NEMAC
http://nemac.unca.edu
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