I suppose a side effect of introducing mapSettings?<br><br>On Sunday, 18 October 2015, Nyall Dawson <<a href="mailto:nyall.dawson@gmail.com">nyall.dawson@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi all,<br>
<br>
I'm totally struggling to understand what the "Canvas Units" setting<br>
in project properties is there for, and what it's ACTUALLY supposed to<br>
do...<br>
<br>
Currently, it seems like a read-only property. Whatever you set it to<br>
(regardless of whether or not OTF is enabled or not), it's always<br>
reset whenever you reopen the properties dialog. But the broken<br>
behaviour goes a lot deeper than just this.... looking at the code<br>
it's very unclear what this setting is there for. I think it's<br>
*supposed* to allow users to override the map units for the current<br>
project CRS, but why would we want this? Changing it would result in<br>
totally meaningless measurements....!<br>
<br>
Unless I'm misunderstanding, this setting should be removed and<br>
replaced with a label showing what the units are for the current<br>
projection.<br>
<br>
<br>
I'm trying to get to the bottom of <a href="http://hub.qgis.org/issues/11986" target="_blank">http://hub.qgis.org/issues/11986</a><br>
(Area calculation is wrong with OTF enabled), but even after reading<br>
the source I'm struggling to understand how QGIS is supposed to be<br>
handling this. And if a developer who CAN read the source has no idea,<br>
how are normal users supposed to understand this? ;)<br>
<br>
Any ideas on what the correct behaviour should be, please let me know<br>
ASAP and maybe I can get this sorted before release.<br>
<br>
Nyall<br>
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<a href="http://lists.osgeo.org/mailman/listinfo/qgis-developer" target="_blank">http://lists.osgeo.org/mailman/listinfo/qgis-developer</a></blockquote><br><br>-- <br>Luigi Pirelli<br><br>**************************************************************************************************<br>* LinkedIn: <a href="https://www.linkedin.com/in/luigipirelli" target="_blank">https://www.linkedin.com/in/luigipirelli</a><br>* Elance: <a href="https://www.elance.com/s/edit/luigipirelli/" target="_blank">https://www.elance.com/s/edit/luigipirelli/</a><br>* GitHub: <a href="https://github.com/luipir" target="_blank">https://github.com/luipir</a><br>* Stackexchange: <a href="http://gis.stackexchange.com/users/19667/luigi-pirelli" target="_blank">http://gis.stackexchange.com/users/19667/luigi-pirelli</a><br>* Mastering QGIS: <a href="https://www.packtpub.com/application-development/mastering-qgis" target="_blank">https://www.packtpub.com/application-development/mastering-qgis</a><br>**************************************************************************************************<br><br>