<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Thanks for the speedy reply Even! I had not considered alternative tile layouts. I did open an issue here if others want to chime in:<div><div style="display: block;"><a href="https://github.com/opengeospatial/CloudOptimizedGeoTIFF/issues/37">https://github.com/opengeospatial/CloudOptimizedGeoTIFF/issues/37</a></div><div><br></div>Scott<br><div><br><blockquote type="cite"><div>On 7. Jan 2025, at 17:23, Even Rouault <even.rouault@spatialys.com> wrote:</div><br class="Apple-interchange-newline"><div><div>!-------------------------------------------------------------------|<br> This Message Is From an Untrusted Sender<br> You have not previously corresponded with this sender.<br> See https://itconnect.uw.edu/email-tags for additional information. Please contact the UW-IT Service Center, help@uw.edu 206.221.5000,<br> for assistance.<br>|-------------------------------------------------------------------!<br><br>Scott,<br><br><blockquote type="cite"><br>Since a key aspect of COGs is efficient network access, shouldn’t this file not be considered a COG?<br></blockquote><br>The row-major order (that is tiles are sorted from top-to-bottom, left-to-right) used by the GDAL COG driver is one of the many possible ways of having spatial contiguity being omewhat reflected in a file linear organization. But someone could also possibly use other ordering techniques, like Hilbert curves or other space-filling curves (https://urldefense.com/v3/__https://en.wikipedia.org/wiki/Space-filling_curve__;!!K-Hz7m0Vt54!i4fOZAt0f-88naUsZwCsp6e1BdUfWeKREt0dNnZ0vqcPG7bqrDQ1_hFy48k2UpLR2mF9A2VgJw1Ymj-5csiACJY$ ), to also achieve that purpose. Hence COG hasn't standardized on that. You could possibly open an issue related to that at https://urldefense.com/v3/__https://github.com/opengeospatial/CloudOptimizedGeoTIFF/issues__;!!K-Hz7m0Vt54!i4fOZAt0f-88naUsZwCsp6e1BdUfWeKREt0dNnZ0vqcPG7bqrDQ1_hFy48k2UpLR2mF9A2VgJw1Ymj-5bL6VEpU$ <br>Even<br><br>-- <br>https://urldefense.com/v3/__http://www.spatialys.com__;!!K-Hz7m0Vt54!i4fOZAt0f-88naUsZwCsp6e1BdUfWeKREt0dNnZ0vqcPG7bqrDQ1_hFy48k2UpLR2mF9A2VgJw1Ymj-5Cez20D4$ My software is free, but my time generally not.<br>Butcher of all kinds of standards, open or closed formats. At the end, this is just about bytes.<br><br></div></div></blockquote></div><br></div></body></html>