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I am sending this because I just realized that I posted w/ the wrong
subject so that it gets filed correctly in the archive:<br>
<br>
<pre wrap="">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</pre>
<br>
On 5/25/2012 3:00 AM, Chaitanya kumar CH wrote:
<blockquote
cite="mid:CAMKgpObbfjDbRUQCdq=nARfp8L8vRniY9G13K4t0m8K2Ldgw6A@mail.gmail.com"
type="cite">Derek,<br>
<br>
Please provide the gdalinfo output of the img file.<br>
<br>
Also, try this:<br>
Create a vrt file instead of a HFA using the same gdal_translate
command. See if gdalwarp works with the vrt file.<br>
<br>
<div class="gmail_quote">
On Fri, May 25, 2012 at 7:17 AM, jdmorgan <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:jdmorgan@unca.edu"
target="_blank">jdmorgan@unca.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<p class="MsoNormal">Hello, </p>
<p class="MsoNormal">I am attempting to georeference and
project a jpeg image using only gdal tool.<span> </span>I
have georeferenced the jpeg using the following command:<span>
</span></p>
<p><span>gdal_translate </span>-<span>a_srs EPSG:</span>102719<span>
-of HFA </span>-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
35.5940266570877<span> NCDCLogo.jpg NCDCLogo.img<span> </span></span></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">The command run fine and produces a img
file however it does not line up with similarly project
layer per the gcp’s.<span> </span>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:</p>
<p class="MsoNormal">“There is no affine transformation and
no GCPs.”</p>
<p class="MsoNormal">Any pointers here would be greatly
appreciated.</p>
<p class="MsoNormal">Thanks, </p>
<p class="MsoNormal">Derek</p>
</div>
<br>
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</blockquote>
</div>
<br clear="all">
<br>
-- <br>
Best regards,<br>
Chaitanya kumar CH.<br>
<br>
+91-9494447584<br>
17.2416N 80.1426E<br>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Derek @ NEMAC
<a class="moz-txt-link-freetext" href="http://nemac.unca.edu">http://nemac.unca.edu</a></pre>
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