[Qgis-developer] Proposal - Change mIconProjectionEnable/Disable Icons

[Paolo Cavallini]

Il 16/01/2017 03:11, Martin Dobias ha scritto:

> Agreed - things will get easier if OTF is always enabled.

Generally agreed. I use and teach not to use OTF of when:
* checking in case of trouble (layers misaligned): switching off allows
a better understanding of what has gone wrong
* digitizing: people may digitize in the wrong place, if they are not
aware OTF is on
* analysis: there is a warning, ON by default, to avoid mixing CRSs, but
if OTF is OFF, things are more immediately clear to the user
So having it permanently ON, with the possibility of switching OFF
manually, seems fine to me.
BTW, it should be noted that we currently allow invalid reprojection,
e.g. a global layer on a local CRS, with weird results and potential
freezes (crashes no longer happen, but were a problem years ago). It
would be good to check the bounding box of each CRS and avoid invalid
combinations.
All the best.

-- 
Paolo Cavallini - www.faunalia.eu
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