<div dir="ltr">Thanks, that's very helpful info!</div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, Dec 12, 2024 at 4:44 PM Even Rouault <<a href="mailto:even.rouault@spatialys.com">even.rouault@spatialys.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
<div>
<p>Peter,<br>
</p>
<blockquote type="cite">
<div dir="ltr">
<div>I was curious about something regarding the loose data
files that are built alongside proj.db:</div>
</div>
</blockquote>
Nitpicking: they aren't "built", at most just present &
installed. Details below:<br>
<blockquote type="cite">
<div dir="ltr">
<div><br>
</div>
<div>alaska ==> no longer shipped with
PROJ since a long time. Some binary distributions might still
ship it as part of nostalgia/inertia, but no longer at
<a href="https://github.com/OSGeo/PROJ/tree/master/data" target="_blank">https://github.com/OSGeo/PROJ/tree/master/data</a>. It is in
the proj-data as a GeoTIFF grid now<br>
BETA2007.gsb ==> same as above<br>
conus ==> same as above<br>
egm96_15.gtx ==> same as above<br>
GL27 ==> still shipped with PROJ.
Mostly/only legacy<br>
ITRF2000 ==> still shipped with PROJ. Can be
used in some cases for advanced users creating PROJ pipelines
referencing ITRF transformations, like "+proj=pipeline ...
+step +init=ITRF2000:ITRF96 ...."<br>
MD ==> same as above about grids<br>
nad27 ==> still shipped with PROJ.
Mostly/only legacy<br>
nad83 ==> still shipped with PROJ.
Mostly/only legacy<br>
ntf_r93.gsb ==> same as above about grids<br>
ntv1_can.dat ==> same as above about grids<br>
ntv2_0.gsb ==> same as above about grids</div>
<div><br>
</div>
<div>What exactly wouldn't work if these particular files
weren't available? Are these superseded by something in the
new and improved geotiffs in proj-data?</div>
</div>
</blockquote>
For the grids, yes they are all deprecated by the GeoTIFFs of
proj-data<br>
<blockquote type="cite">
<div dir="ltr">
<div> Or would the average user not even notice they were gone?</div>
</div>
</blockquote>
<p>For the other parts, only the most enlightened minds would
notice.</p>
<p>Even<br>
</p>
<span style="white-space:pre-wrap">
</span>
<pre cols="72">--
<a href="http://www.spatialys.com" target="_blank">http://www.spatialys.com</a>
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.</pre>
</div>
</blockquote></div><div><br clear="all"></div><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div>Peter Townsend<br></div>Senior Software Developer<br></div></div>