[Qgis-developer] Select datum transform in QGIS

[Marco Hugentobler]

Hi Jürgen

>Is that really significant?  I suppose using the same connection as syncDb()
>would help (just because it does it's thing in a transaction).


That was it, I moved everything into a transaction and it is super fast now.

>Who's bad idea was it to call that thing tr()? ;)   transformation() is
>probably better for a public method.


He, he. At least it saved a few bytes on the development machines :-)

>Why is it in a separate branch?


Ok, I'll merge it into master. Hopefully it does not cause too much 
damage...

Regards,
Marco

On 07.11.2013 17:21, Jürgen E. Fischer wrote:
> Hi Marco,
>
> On Thu, 07. Nov 2013 at 16:39:35 +0100, Marco Hugentobler wrote:
>> - The dialogs asking for datum transform could be annoying. Does it need
>> an option to suppress it (and should it be enabled / disabled by
>> default)?
> Or the OTFR dialog could already produce a list of available transforms for
> each CRS used in layers - maybe with the last used transform for each
> combination preselected.
>
>> - The synchronisation of srs.db with datum_shift.csv makes the install  time
>> longer (maybe it can be solved more efficiently?)
> Is that really significant?  I suppose using the same connection as syncDb()
> would help (just because it does it's thing in a transaction).
>
>
>> - To receive the current QgsCoordinateTransformation for a layer, tools
>> may query QgsMapRenderer::tr (or QgsMapRenderer::mapToLayerCoordinates
>> etc.). Creating a new QgsCoordinateTransform from layerCRS and mapCRS is
>> not correct in all cases any more.
> Who's bad idea was it to call that thing tr()? ;)   transformation() is
> probably better for a public method.
>
>
>> What are your opinions / suggestions?
> Why is it in a separate branch?
>
>
>
> Jürgen
>


-- 
Dr. Marco Hugentobler
Sourcepole -  Linux & Open Source Solutions
Weberstrasse 5, CH-8004 Zürich, Switzerland
marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee