[gdal-dev] georeference and project a jpeg

[jdmorgan]

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 <jdmorgan at unca.edu 
> <mailto:jdmorgan at 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
>
>
>     _______________________________________________
>     gdal-dev mailing list
>     gdal-dev at lists.osgeo.org <mailto:gdal-dev at lists.osgeo.org>
>     http://lists.osgeo.org/mailman/listinfo/gdal-dev
>
>
>
> -- 
> Best regards,
> Chaitanya kumar CH.
>
> +91-9494447584
> 17.2416N 80.1426E


-- 
Derek @ NEMAC
http://nemac.unca.edu

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