<div dir="ltr">Michael,<div> For some PDS releases, you may find a PDS detached label (*.lbl) pointing at a Vicar file. The PDS label contains a calculate-able "skipbytes" amount to jump over the original vicar label so that it can get to the start of the pixel stream. For your case, indeed the *.lbl is a PDS label pointing inside the vicar image. The *.img is actually a fully formed vicar file also renamed to a normal *.img extension. The Vicar file may have originally had no extension, a *.img extension, or I have seen the extension *.02 also.</div><div><br></div><div>Anyway, the GDAL PDS should be able to open this file using *.lbl but...</div><div><br></div><div>For others not familiar with planetary data, the image you mentioned is not map projected (see gdalinfo run below). The PDS and ISIS readers were really written for derived (map projected -- aka GIS-ready) images. The use of "raw" even if calibrated images in GDAL may have limited uses besides access to the pixels. Don't expect GDAL to be able to map project (or orthorectify) this image. That is why ISIS and VICAR exist which contain the camera models for many of the instruments used in planetary research.</div><div><br></div><div>-Trent</div><div><br></div><div><br></div><div><div><font face="monospace">ast{86}> gdalinfo N1466584989_1_CALIB.LBL</font></div><div><font face="monospace">Driver: PDS/NASA Planetary Data System</font></div><div><font face="monospace">Files: N1466584989_1_CALIB.LBL</font></div><div><font face="monospace"> N1466584989_1_CALIB.IMG</font></div><div><font face="monospace">Size is 1024, 1024</font></div><div><font face="monospace">Coordinate System is `'</font></div><div><font face="monospace">Metadata:</font></div><div><font face="monospace"> BANDWIDTH=</font></div><div><font face="monospace"> CENTER_FILTER_WAVELENGTH=</font></div><div><font face="monospace"> DATA_SET_ID="CO-S-ISSNA/ISSWA-2-EDR-V1.0"</font></div><div><font face="monospace"> FILTER_NAME=("CL1","CL2")</font></div><div><font face="monospace"> INSTRUMENT_ID="ISSNA"</font></div><div><font face="monospace"> INSTRUMENT_NAME="IMAGING SCIENCE SUBSYSTEM NARROW ANGLE"</font></div><div><font face="monospace"> MISSION_NAME="CASSINI-HUYGENS"</font></div><div><font face="monospace"> NOTE=</font></div><div><font face="monospace"> PRODUCER_INSTITUTION_NAME=</font></div><div><font face="monospace"> PRODUCT_CREATION_TIME=2011-01-20T00:33:43</font></div><div><font face="monospace"> PRODUCT_ID="1_N1466584989.132"</font></div><div><font face="monospace"> PRODUCT_TYPE=</font></div><div><font face="monospace"> SPACECRAFT_NAME=</font></div><div><font face="monospace"> TARGET_NAME="MIMAS"</font></div><div><font face="monospace">Corner Coordinates:</font></div><div><font face="monospace">Upper Left ( 0.0, 0.0)</font></div><div><font face="monospace">Lower Left ( 0.0, 1024.0)</font></div><div><font face="monospace">Upper Right ( 1024.0, 0.0)</font></div><div><font face="monospace">Lower Right ( 1024.0, 1024.0)</font></div><div><font face="monospace">Center ( 512.0, 512.0)</font></div><div><font face="monospace">Band 1 Block=1024x1 Type=Float32, ColorInterp=Undefined</font></div><div><font face="monospace"> NoData Value=-3.40282265508890445e+38</font></div></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div> </div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Dec 4, 2014 at 3:13 PM, K.-Michael Aye <span dir="ltr"><<a href="mailto:kmichael.aye@gmail.com" target="_blank">kmichael.aye@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><u></u>
<div>
<div>I’m not sure now if this image (‘N1467346388_2_CALIB.IMG’) is actually a VICAR image.</div>
<div>The unix `file` command recognizes it as a VICAR image:</div>
<div><br></div>
<div>
<div>❯ file N1467346388_2_CALIB.IMG [3:12:31 PM]</div>
<div>N1467346388_2_CALIB.IMG: VICAR image data</div>
</div>
<div><br></div>
<div>but NASAView’s full label view shows me this:</div>
<div><br></div>
<div>
<div>OBJECT = IMAGE_HEADER<CR><LF></div>
<div> INTERCHANGE_FORMAT = ASCII<CR><LF></div>
<div> HEADER_TYPE = VICAR2<CR><LF></div>
<div> BYTES = 4096<CR><LF></div>
<div> RECORDS = 1<CR><LF></div>
<div> DESCRIPTION = "Original VICAR2 header, updated by CISSCAL.”<CR><LF></div>
</div>
<div><br></div>
<div>So this sounds like maybe a previous VICAR image has been converted to a more standard PDS format?</div>
<div>Maybe Trent knows more about this.</div><span class="">
<div><br></div>
<div>Michael</div>
<div><br></div>
<div>
— <div>Michael Aye</div>
<div>Cassini UVIS and MAVEN IUVS team</div>
<div>LASP, Boulder CO</div>
</div>
<div><br></div>
</span><div><div class="h5"><blockquote type="cite">
<div>On Dec 4, 2014, at 2:47 PM, K.-Michael Aye <<a href="mailto:kmichael.aye@gmail.com" target="_blank">kmichael.aye@gmail.com</a>> wrote:</div>
<div><br></div>
<div style="text-align:start">Apparently, the PDS reader works in this case, not sure if it would work on all VICAR images?</div>
<div style="text-align:start"><br></div>
<div style="text-align:start">Currently I’m trying to read Cassini ISS images and before I made the mistake to provide the .IMG file instead of the .LBL file to the reader.</div>
<div style="text-align:start">Opening the .LBL label file (that links to the .IMG file) is successful and I get the image out of it. I have confirmed via ds.GetDriver().GetDescription() that the PDS GDAL driver opened the file.</div>
<div style="text-align:start"><br></div>
<div style="text-align:start">Michael</div>
<div style="text-align:start">— <div>Michael Aye</div>
<div>Cassini UVIS and MAVEN IUVS team</div>
<div>LASP, Boulder CO</div>
</div>
<div style="text-align:start"><br></div>
<blockquote type="cite" style="text-align:start">
<div>On Dec 4, 2014, at 12:23 PM, Hare, Trent <<a href="mailto:thare@usgs.gov" target="_blank">thare@usgs.gov</a>> wrote:</div>
<div><br></div>
<div dir="ltr" style="text-align:start">Michael,<div> Yes - Sebastian Walters created one. I'm not clear if the driver will be pushed into the public version of GDAL? I know it is being used by the HRSC Team to convert to their VICAR products to GeoTiff (DEMs) and Jpeg2000.(images). If it does get pushed into GDAL then I would recommend the gdal/frmts/pds/ directory alongside other like formats.<div>
<div><br></div>
<div>see page: 185</div>
<div>
<a href="http://pubs.usgs.gov/of/2014/1056/pdf/ofr2014-1056.pdf" target="_blank">http://pubs.usgs.gov/of/2014/1056/pdf/ofr2014-1056.pdf</a><br>
</div>
<div>from: <a href="http://pubs.er.usgs.gov/publication/ofr20141056" target="_blank">http://pubs.er.usgs.gov/publication/ofr20141056</a>
</div>
<div><br></div>
<div>Probably worth asking Sebastian his intentions.</div>
<div><br></div>
<div>Regards,</div>
<div>Trent</div>
</div>
</div>
</div>
<div class="gmail_extra" style="text-align:start">
<br><div class="gmail_quote">On Thu, Dec 4, 2014 at 12:21 PM, Frank Warmerdam<span dir="ltr"><<a href="mailto:warmerdam@pobox.com" target="_blank">warmerdam@pobox.com</a>></span>wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="ltr">Michael,<div><br></div>
<div>I thought it existed, but digging around in the formats directory it appears not to. It would be nice to add.</div>
<div><br></div>
<div>Best regards,</div>
<div>Frank</div>
<div><br></div>
<div><br></div>
</div>
<div class="gmail_extra">
<br><div class="gmail_quote">
<div><div>On Thu, Dec 4, 2014 at 11:12 AM, K.-Michael Aye<span dir="ltr"><<a href="mailto:kmichael.aye@gmail.com" target="_blank">kmichael.aye@gmail.com</a>></span>wrote:<br>
</div></div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div><div>
<u></u><div>
<div>Hello all,</div>
<div><br></div>
<div>Has anybody worked on implementing a VICAR reader yet? </div>
<div><br></div>
<div><a href="http://www-mipl.jpl.nasa.gov/external/vicar.html" target="_blank">http://www-mipl.jpl.nasa.gov/external/vicar.html</a></div>
<div><br></div>
<div>It’s pretty important for a bit older NASA data.</div>
<div><br></div>
<div>Regards,</div>
<div>Michael</div>
<div><br></div>
<div>— <div>Michael Aye</div>
<div>Cassini UVIS and MAVEN IUVS team</div>
<div>LASP, Boulder CO</div>
</div>
</div>
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