[Qgis-developer] No Zoom to selected point

[Marco Hugentobler]

 >I have no means to see the particular point I selected and that is 
worse than "unconvenient".

Of course you have. You know the point is in the middle of the screen, 
so you can manually zoom to it. It is just not convenient :-)

On 04.12.2013 08:19, Bernhard Ströbl wrote:
> Hi Marco,
>
> of course it is undefined, but IMHO something should happen if you 
> click "zoom to selected". If I have a cloud of points and nothing 
> happens I have no means to see the particular point I selected and 
> that is worse than "unconvenient".
> How does other GIS software handle this problem?
>
> Bernhard
>
> Am 04.12.2013 07:57, schrieb Marco Hugentobler:
>> Hi Bernhard
>>
>> If one point is selected, it is somehow undefined how far to zoom in.
>> Earlier behaviour was to just zoom in by a factor of two. This however
>> is very unconvenient if you repeatedly select entries in the attribute
>> table and click 'zoom to selected'.
>>
>> Regards,
>> Marco
>>
>> On 04.12.2013 07:50, Bernhard Ströbl wrote:
>>> Hi Gino,
>>>
>>> can you confirm what I described (_one_ point selected, does not zoom)?
>>>
>>> I tried with f21562c on OpenSuse 64 bit.
>>>
>>> Bernhard
>>>
>>> Am 03.12.2013 18:01, schrieb Gino Pirelli:
>>>> not confirmed in f21562c
>>>> not confirmed in f1f2e16
>>>>
>>>>
>>>> On 3 December 2013 16:40, Vincent Mora<vincent.mora at oslandia.com> 
>>>> wrote:
>>>>
>>>>> I observed the same behavior (qgis master) with two points alligned
>>>>> on x
>>>>> (a very simple layer indeed).
>>>>>
>>>>>
>>>>> On 02/12/2013 12:15, Bernhard Ströbl wrote:
>>>>>
>>>>>> Dear devs,
>>>>>>
>>>>>> today I stumbled on a strange behaviour when zoooming to a point.
>>>>>> To reproduce: load a point layer, select one feature in the table 
>>>>>> and
>>>>>> click "Zoom to selection". The result is the same as if clicking
>>>>>> "Pan map
>>>>>> to Selection", i.e the map is panned but not zoomed.
>>>>>> I _think_ this is because the bounding box of the selected feature
>>>>>> has a
>>>>>> width and height of 0. Try iface.activeLayer().
>>>>>> boundingBoxOfSelected().width()/.height() in the Python console.
>>>>>> Geometrically speaking this is correct but as the zoom to selected
>>>>>> function builds on a bounding box with width/height> 0 the outcome
>>>>>> for the
>>>>>> user is bad.
>>>>>> My suggestion would be to define a small rectangle around the 
>>>>>> bounding
>>>>>> boxes' center if it has size 0 in the zoomToSelected function.
>>>>>>
>>>>>> Tried with QGIS 2.0.1 and current master
>>>>>>
>>>>>> Shall I file a ticket for this?
>>>>>>
>>>>>> Bernhard
>>>>>>
>>>>>>
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-- 
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