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That's excellent to know! Thanks a lot Martin. Instead of getting
segfault, <br>I could use that to exist peacefully in case the driver does support the Create() function.<br><br>Just of out of curiosity, why JPEG driver does not have the create function and only supports CreateCopy()? <br>The Create() function could be easily implemented using MEM and CreateCopy(); instead of relying on the user to do this every time a JPEG driver is used.<br><br>With best regards.<br>~Belaid.<br><hr id="stopSpelling">From: chapmanm@pixia.com<br>To: belaid_moa@hotmail.com; gdal-dev@lists.osgeo.org<br>Subject: RE: [gdal-dev] JPEG format.<br>Date: Wed, 29 Jul 2009 11:56:04 -0600<br><br>
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<p class="EC_MsoNormal"><span style="font-size: 10pt; font-family: 'Courier New'; color: blue;">Use:</span></p>
<p class="EC_MsoNormal"><span style="font-size: 10pt; font-family: 'Courier New'; color: blue;"> </span></p>
<p class="EC_MsoNormal"><span style="font-size: 10pt; font-family: 'Courier New'; color: blue;">if</span><span style="font-size: 10pt; font-family: 'Courier New';">
(!pDriver->TestCapability(ODrCCreateDataSource))</span></p>
<p class="EC_MsoNormal"><span style="font-size: 10pt; font-family: 'Courier New';"> </span></p>
<p class="EC_MsoNormal"><span style="font-size: 10pt; font-family: 'Courier New';">to
test create capabilties of the driver.</span></p>
<p class="EC_MsoNormal"><span style="font-size: 10pt; font-family: 'Courier New';"> </span></p>
<p class="EC_MsoNormal"><span style="font-size: 10pt; font-family: 'Courier New';">I
think jpeg driver only supports CreateCopy().</span></p>
<p class="EC_MsoNormal"><span style="font-size: 10pt; font-family: 'Courier New';"> </span></p>
<p class="EC_MsoNormal"><span style="font-size: 10pt; font-family: 'Courier New';">You
could use the Memory dataset to create a different size dataset and then use
the jpeg driver to save it to disk.</span></p>
<p class="EC_MsoNormal"><span style="font-size: 10pt; font-family: 'Courier New';"> </span></p>
<p class="EC_MsoNormal"><span style="font-size: 10pt; font-family: 'Courier New';">Martin</span></p>
<p class="EC_MsoNormal"><span style="font-size: 11pt; font-family: 'Calibri','sans-serif'; color: rgb(31, 73, 125);"> </span></p>
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<p class="EC_MsoNormal"><b><span style="font-size: 10pt; font-family: 'Tahoma','sans-serif';">From:</span></b><span style="font-size: 10pt; font-family: 'Tahoma','sans-serif';">
gdal-dev-bounces@lists.osgeo.org [mailto:gdal-dev-bounces@lists.osgeo.org] <b>On
Behalf Of </b>Belaid MOA<br>
<b>Sent:</b> Wednesday, July 29, 2009 11:45 AM<br>
<b>To:</b> gdal-dev@lists.osgeo.org<br>
<b>Subject:</b> [gdal-dev] JPEG format.</span></p>
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<p class="EC_MsoNormal"> </p>
<p class="EC_MsoNormal" style="margin-bottom: 12pt;"><span style="font-size: 10pt; font-family: 'Verdana','sans-serif';">Hi Everyone,<br>
When I try to use GDALCreate() on the JPEG driver, I got the following
error: "GDALDriver::Create() ... no create method implemented for this
format."<br>
Does is this mean that JPEG driver does not have its GDALCreate()
function implemented? Any example on how to use JPEG driver is appreciated.<br>
<br>
As always, any help on this is very appreciated.<br>
<br>
With best regards.<br>
~Belaid</span></p>
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<p class="EC_MsoNormal"><span style="font-size: 10pt; font-family: 'Verdana','sans-serif';">Stay
in the loop and chat with friends, right from your inbox! <a href="http://go.microsoft.com/?linkid=9671349">Learn how!</a></span></p>
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