[QGIS-Developer] problems with IGNF:ELG ellipsoids in srs.db

[G. Allegri]

Some measurement testing on QGIS 3.0 revealed that
https://issues.qgis.org/issues/13957 issue is still there, and it's quite
subtle because we have very similar elliposid names, with similar
definitions except IGNF:ELG ones have trailing zeros.

For example WGS84:

id     acronym            name      radius                     parameter2
--------------------------------------------------------------------------------------------------
41 WGS84             WGS 84  a=6378137.0          rf=298.257223563
51 IGNF:ELG053   WGS84   a=6378137.0000    rf=298.2572235630000

This is quite misleading for the user whene selecting the elliposid for
Measurements.
Anyway, it could be accepted if they both worked but in case ellispoid #51
is selected two problems appear:

1 - the selected ellipsoid is not retained in the dropdown box. If you
reopen project properties "Clarke 1866" is selected instead of "WGS84"
2 - (maybe related to the latter) measure values are completely wrong

Everything works fine if "WGS 84" (ellipsoid #41) is selected.

Giovanni
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-developer/attachments/20171019/f9923593/attachment.html>