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<div class="">On 18 Dec 2017, at 16:11, Even Rouault <<a href="mailto:even.rouault@spatialys.com" class="">even.rouault@spatialys.com</a>> wrote:</div>
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On lundi 18 décembre 2017 14:42:28 CET Kristian Evers wrote:</div>
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> Even,</div>
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> </div>
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> Thanks for setting this up! A few comments and ideas:</div>
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Basically I just did the first easy step and will now quickly run away before the real troubles show up ;-)</div>
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> </div>
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> </div>
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> 1. Some structure in the repo would be nice. It might be as simple as</div>
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> having a folder called "grids" which contain all the grids and then</div>
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> README's and other relevant files in the root.</div>
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Agreed</div>
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> </div>
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> 2. We should come up with some rules to govern the repo with. The most</div>
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> important here is describing the requirements for getting grids accepted as</div>
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> part of the repository. A list of accepted licenses would be handy. </div>
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Would the following make sense:</div>
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- Public domain</div>
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- X/MIT, BSD 2/3/4 clause</div>
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- CC0, CC-BY, CC-BY-SA</div>
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Or perhaps we could just require the license to be an OSI approved one ? The license of grid files, being data files, should have no consequence on the software stack itself, right ?</div>
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<div>I think it is a good start. Software licenses like MIT and BDS are probably not very suited for the purpose, so maybe we should discourage use of those. </div>
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> Contact information or some other form of source of the grid is also needed I think.</div>
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Agreed. The README could track the provenance & licensing of grids.</div>
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> </div>
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> 3. Can we convert the old CTable files to CTable2 format? The former</div>
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> are architecture dependent. Effectively fixes</div>
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> <a href="https://github.com/OSGeo/proj.4/issues/44" class="">https://github.com/OSGeo/proj.4/issues/44</a></div>
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I don't see any remanining CTable file. As far as I can see, in projgrids, all files are CTable2 except the .gsb files (NTV2) and ntv1_can.dat (NTV1). So the ticket can probably be closed.</div>
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<div>I was of the impression that the alaska, conus and a few others were still in CTable format. Great if that is not the case!</div>
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> </div>
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> 4. Are the current tests affected of your "removal-proposal"? Removing</div>
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> the null grid could have some consequences.</div>
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I imagine that the tests woud probably require downloading a few grids.</div>
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<div>That’s what I figured as well. It should be documented somewhere if it is required to download the grids before tests will pass.</div>
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Even</div>
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Spatialys - Geospatial professional services</div>
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<a href="http://www.spatialys.com/" class="">http://www.spatialys.com</a></div>
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