<div dir="ltr"><div class="gmail_default" style="font-family:times new roman,serif;font-size:large;color:#0b5394">Thanks Dr. Lee for you quick response,</div><div class="gmail_default" style="font-family:times new roman,serif;font-size:large;color:#0b5394"><br></div><div class="gmail_default" style="font-family:times new roman,serif;font-size:large;color:#0b5394">I runned your example. It seems that it returns an output; however the returned .tif does not contain information. I checked the tif file that you uploaded in [1], but this also does not contain information. </div><div class="gmail_default" style="font-family:times new roman,serif;font-size:large;color:#0b5394"><br></div><div class="gmail_default" style="font-family:times new roman,serif;font-size:large;color:#0b5394">I know that the Quality_Assurance SDS contains information about spectral tests because I can see those using HDFView 3.1.1. <br></div><div class="gmail_default" style="font-family:times new roman,serif;font-size:large;color:#0b5394"><br></div><div class="gmail_default" style="font-family:times new roman,serif;font-size:large;color:#0b5394">Do you know what is happening here?</div><div class="gmail_default" style="font-family:times new roman,serif;font-size:large;color:#0b5394"><br></div><div class="gmail_default" style="font-family:times new roman,serif;font-size:large;color:#0b5394">Thanks in advance...<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">El vie., 7 ago. 2020 a las 22:55, Joe Lee (<<a href="mailto:hyoklee@hdfgroup.org">hyoklee@hdfgroup.org</a>>) escribió:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal">Hi,<u></u><u></u></p>
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<p class="MsoNormal" style="text-indent:5.25pt">Please try<u></u><u></u></p>
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<p class="MsoNormal" style="text-indent:5.25pt"><span style="font-size:12pt">$</span><span style="font-size:12pt">
</span><span style="font-size:12pt">gdalmdimtranslate -array "name=/swaths/mod35/Data Fields/Quality_Assurance,transpose=[2,1,0]"
</span><span class="gmail-m_5244606020235693099gmail-gd15mcfceub"><span style="font-size:12pt;color:black;border:1pt none windowtext;padding:0in;background:white none repeat scroll 0% 0%">MOD35_L2.A2017161.1525.061.2017315035809.hdf test.tif</span></span><span style="font-size:12pt"><u></u><u></u></span></p>
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<p class="MsoNormal" style="text-indent:5.25pt">as shown in [1], which I updated it today for MOD35_L2.
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<p class="MsoNormal" style="text-indent:5.25pt">[1] <a href="https://github.com/hdfeos/zoo/tree/master/gdal" target="_blank">
https://github.com/hdfeos/zoo/tree/master/gdal</a><u></u><u></u></p>
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<p class="MsoNormal"><b>From:</b> gdal-dev <<a href="mailto:gdal-dev-bounces@lists.osgeo.org" target="_blank">gdal-dev-bounces@lists.osgeo.org</a>> <b>
On Behalf Of </b>J. Antonio Guzmán Q.<br>
<b>Sent:</b> Friday, August 07, 2020 4:44 PM<br>
<b>To:</b> <a href="mailto:gdal-dev@lists.osgeo.org" target="_blank">gdal-dev@lists.osgeo.org</a><br>
<b>Subject:</b> [gdal-dev] Extracting a band with gdalmdimtranslate<u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:black">Hi,</span><span style="font-size:18pt;font-family:"Times New Roman",serif;color:rgb(11,83,148)"><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:black">I am trying to extract a band (byte 3) from the Quality_Assurance SDS of MODIS Cloud Mask swath product (MOD35-MYD35). Overall, I can not extract a band or array
using gdalwarp since the dimensions of the array seems to be [Along, Across, Bytes] [2040x1354x10] and not [Bytes, Along, Across]. Therefore, I am trying to use gdalmdimtranslate to first transpose the array (transpose=[2,0,1]) and then do the extraction as
GTiff. </span><u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:black">Despite this, I am not totally sure about code writing or logic for this; maybe some of you can help me.
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:black">My code is the foll<span style="background:white none repeat scroll 0% 0%">owing for the enclosed file below</span></span><u></u><u></u></p>
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<pre style="margin-bottom:12pt;word-break:break-all;outline:currentcolor none medium;white-space:pre-wrap;font-variant-ligatures:normal;font-variant-caps:normal;text-decoration-style:initial;text-decoration-color:initial;word-spacing:0px" id="gmail-m_5244606020235693099gmail-rstudio_console_output"><span class="gmail-m_5244606020235693099gmail-gd15mcfceub"><span style="font-size:13.5pt;color:black;border:1pt none windowtext;padding:0in;background:white none repeat scroll 0% 0%">gdalmdimtranslate HDF4_EOS:EOS_SWATH:MOD35_L2.A2017161.1525.061.2017315035809.hdf:mod35:Quality_Assurance example.tif -scaleaxes 'QA_Dimension:mod35(3)'</span></span><u></u><u></u></pre>
<pre style="margin-bottom:12pt;word-break:break-all;outline:currentcolor none medium;white-space:pre-wrap;font-variant-ligatures:normal;font-variant-caps:normal;text-decoration-style:initial;text-decoration-color:initial;word-spacing:0px" id="gmail-m_5244606020235693099gmail-rstudio_console_output"><span class="gmail-m_5244606020235693099gmail-gd15mcfceub"><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:black;border:1pt none windowtext;padding:0in;background:white none repeat scroll 0% 0%">I am running this from the cmd as a test using gdal 3.1.1. I always get an </span></span><span class="gmail-m_5244606020235693099gmail-gd15mcfceub"><span style="font-size:13.5pt;color:black;border:1pt none windowtext;padding:0in;background:white none repeat scroll 0% 0%">ERROR 5: </span></span><span style="font-size:13.5pt;color:black;border:1pt none windowtext;padding:0in;background:white none repeat scroll 0% 0%"><br><span class="gmail-m_5244606020235693099gmail-gd15mcfceub">GDALDataset::GetRasterBand(-1) - Illegal band</span></span><u></u><u></u></pre>
<pre style="margin-bottom:12pt;word-break:break-all;outline:currentcolor none medium;white-space:pre-wrap;font-variant-ligatures:normal;font-variant-caps:normal;text-decoration-style:initial;text-decoration-color:initial;word-spacing:0px" id="gmail-m_5244606020235693099gmail-rstudio_console_output"><span class="gmail-m_5244606020235693099gmail-gd15mcfceub"><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:black;border:1pt none windowtext;padding:0in;background:white none repeat scroll 0% 0%">I also try to call the dimension in different ways out results. If you have a different approach to extract the Byte 3 of this SDS that is also welcome. </span></span><u></u><u></u></pre>
<pre style="word-break:break-all;outline:currentcolor none medium;white-space:pre-wrap;font-variant-ligatures:normal;font-variant-caps:normal;text-decoration-style:initial;text-decoration-color:initial;word-spacing:0px" id="gmail-m_5244606020235693099gmail-rstudio_console_output"><span class="gmail-m_5244606020235693099gmail-gd15mcfceub"><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:black;border:1pt none windowtext;padding:0in;background:white none repeat scroll 0% 0%">I also enclosed a .txt as a results of</span></span><span class="gmail-m_5244606020235693099gmail-gd15mcfceub"><span style="font-size:13.5pt;color:black;border:1pt none windowtext;padding:0in;background:white none repeat scroll 0% 0%"> gdalinfo <u></u><u></u></span></span></pre>
<pre style="word-break:break-all"><span class="gmail-m_5244606020235693099gmail-gd15mcfceub"><span style="font-size:13.5pt;color:black;border:1pt none windowtext;padding:0in;background:white none repeat scroll 0% 0%">MOD35_L2.A2017161.1525.061.2017315035809.hdf<u></u><u></u></span></span></pre>
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<p class="MsoNormal"><span style="font-size:18pt;font-family:"Times New Roman",serif;color:black;background:white none repeat scroll 0% 0%">Best regards,</span><span style="font-size:18pt">
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<p class="MsoNormal"><span style="font-size:18pt;font-family:"Times New Roman",serif;color:black"><a href="https://drive.google.com/file/d/1f7oda-N9YT_cyf7YRw80BNQZr2O0RUMe/view?usp=sharing" target="_blank">https://drive.google.com/file/d/1f7oda-N9YT_cyf7YRw80BNQZr2O0RUMe/view?usp=sharing</a></span><span style="font-size:18pt;font-family:"Times New Roman",serif"><u></u><u></u></span></p>
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<p class="MsoNormal">-- <u></u><u></u></p>
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<p class="MsoNormal">_______________________<br>
J. Antonio Guzmán Q., <i>M.Sc</i><br>
Ph.D Candidate and Vanier Scholar<u></u><u></u></p>
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<p class="MsoNormal">Earth and Atmospheric Sciences Department <u></u><u></u></p>
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</blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">_______________________<br>J. Antonio Guzmán Q., <i>M.Sc</i><br>Ph.D Candidate and Vanier Scholar</div><div dir="ltr">Earth and Atmospheric Sciences Department <br>University of Alberta, Canada</div><div dir="ltr"><a href="http://jaguzmanq.com" target="_blank">jaguzmanq.com</a><br>Look my work in <a href="https://scholar.google.es/citations?user=Ev3ofxwAAAAJ&hl=es" target="_blank">Google Scholar</a> and/or <a href="https://www.researchgate.net/profile/J_Antonio_Guzman_Q" target="_blank">ResearchGate</a></div></div></div></div></div></div></div></div></div></div>