<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Nyall,<div class=""><br class=""></div><div class="">Have you had a look at <a href="https://proj.org/operations/operations_computation.html" class="">https://proj.org/operations/operations_computation.html</a> ?</div><div class="">It’s a bit of a long read but it explains the logic behind what transformations are</div><div class="">chosen under various circumstances.</div><div class=""><br class=""></div><div class="">/Kristian<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On 9 Feb 2021, at 23:38, Nyall Dawson <<a href="mailto:nyall.dawson@gmail.com" class="">nyall.dawson@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Hi list,<br class=""><br class="">I'm after a quick summary of what tie-breakers are used to sort<br class="">candidate operations when a number of operations have the same<br class="">reported accuracy.<br class=""><br class="">I have a vague recollection that one logic is that larger number<br class="">transforms are picked, .i.e. " WGS 84 to GDA2020 (3)" is picked over<br class="">"WGS 84 to GDA2020 (2)", but I may be mistaken!<br class=""><br class="">Is anyone able to quickly summarise the sorting order of operations or<br class="">can direct me to the relevant part of the code for me to determine<br class="">this?<br class=""><br class="">Thanks!<br class="">Nyall<br class="">_______________________________________________<br class="">PROJ mailing list<br class=""><a href="mailto:PROJ@lists.osgeo.org" class="">PROJ@lists.osgeo.org</a><br class="">https://lists.osgeo.org/mailman/listinfo/proj<br class=""></div></div></blockquote></div><br class=""></div></body></html>