<div style="font-family: Arial, sans-serif; font-size: 14px;">Howard,</div>
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</div><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;" class="protonmail_signature_block protonmail_signature_block-empty">I don't think we will gain anything by lagging behind by x months of EPSG releases. No one else is testing their releases in real time (as far as I know), so we would just find the same issues at a later date.</div><div style="font-family: Arial, sans-serif; font-size: 14px;" class="protonmail_signature_block protonmail_signature_block-empty"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;" class="protonmail_signature_block protonmail_signature_block-empty">I think our best chance for now is to improve testing on our side as much as possible, as well as providing the means for non-techy geodesist to tests stuff in development. The first part I think we can start acting on right away, and perhaps even coordinate with the EPSG folks somehow. The second part would require pre-release binaries to be easy to access, as I don't think we can expect that geodesy experts are able to compile PROJ from source. This meshes well with previous talks on automating the release process.</div><div style="font-family: Arial, sans-serif; font-size: 14px;" class="protonmail_signature_block protonmail_signature_block-empty"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;" class="protonmail_signature_block protonmail_signature_block-empty">/Kristian<br><br><div class="protonmail_quote">
On Thursday, April 9th, 2026 at 13:49, Howard Butler via PROJ <proj@lists.osgeo.org> wrote:<br>
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<br id="lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On Apr 8, 2026, at 7:12 AM, Even Rouault via PROJ <proj@lists.osgeo.org> wrote:</div><br class="Apple-interchange-newline"><div><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">Starting with my +1</span></div></blockquote></div><br><div>+1 Howard</div><div><br></div><div>Should PROJ consider implementing some kind of lag in its uptake of EPSG databases? Maybe it wouldn't have mattered in this case, however.</div></blockquote><blockquote class="protonmail_quote" type="cite"><div>"A lot of luck to whoever want to put together the computational part of the datum shift software." – Gerry Eveneden [1]</div><div><br></div><div>[1] https://howardbutler.com/files/history-of-proj4-foss4g2017-howard-butler.pdf</div>
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