<div dir="ltr"><div><div>Hi Pierre</div><div><br></div>There are 4 "different" Indian feet in PROJ, taken from the EPSG I guess:<br><a href="https://beta.epsg.org/search/by-name?searchedTerms=indian+foot">https://beta.epsg.org/search/by-name?searchedTerms=indian+foot</a> (select the "Units" tab. Click on "More" if you do not see it)<br></div><div>The foot you mention [0.30479841] is "Indian foot (1937)"</div><div>The other three are:</div><div> Indian foot: 0.30479951024814694</div><div> Indian foot (1962): 0.3047996</div><div> Indian foot (1975): 0.3047995</div><div><br></div><div>Looking at the source code I see that the "Indian foot (1937)" is also defined in ISO-19111</div><div><br></div><div>Cheers<br></div><div><br></div><div><div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">.___ ._ ..._ .. . ._. .___ .. __ . _. . __.. ... .... ._ .__<br>Entre dos pensamientos racionales <br>hay infinitos pensamientos irracionales.<br><br></div></div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 4 Sep 2020 at 07:02, Pierre Abbat <<a href="mailto:phma@bezitopo.org">phma@bezitopo.org</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">PROJ disagrees with Bezitopo and PerfectTIN on the length of an Indian foot. <br>
PROJ says it's 0.30479841 m; PerfectTIN says it's 0.3047996 m. I got this <br>
figure from Wikipedia. Where did you get that one from?<br>
<br>
Pierre<br>
-- <br>
Jews use a lunisolar calendar; Muslims use a solely lunar calendar.<br>
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