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: https://github.com/opengeospatial/CloudOptimizedGeoTIFF/issues/37
Scott > On 7. Jan 2025, at 17:23, Even Rouault <even.roua...@spatialys.com> wrote: > > !-------------------------------------------------------------------| > This Message Is From an Untrusted Sender > You have not previously corresponded with this sender. > See https://itconnect.uw.edu/email-tags for additional information. Please > contact the UW-IT Service Center, h...@uw.edu 206.221.5000, > for assistance. > |-------------------------------------------------------------------! > > Scott, > >> >> Since a key aspect of COGs is efficient network access, shouldn’t this file >> not be considered a COG? > > 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$ > > Even > > -- > https://urldefense.com/v3/__http://www.spatialys.com__;!!K-Hz7m0Vt54!i4fOZAt0f-88naUsZwCsp6e1BdUfWeKREt0dNnZ0vqcPG7bqrDQ1_hFy48k2UpLR2mF9A2VgJw1Ymj-5Cez20D4$ > My software is free, but my time generally not. > Butcher of all kinds of standards, open or closed formats. At the end, this > is just about bytes. >
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