[Qgis-developer] Attribute Editor: Dual View

[Matthias Kuhn]

Bernhard,

On 01/10/2013 07:39 AM, Bernhard Ströbl wrote:
> Hi Matthias,
>
> comments below.
same here
>
> Am 09.01.2013 16:41, schrieb Matthias Kuhn:
>> Hi Bernhard
>>
>> On 01/09/2013 03:07 PM, Bernhard Ströbl wrote:
>>> Hi Matthias (and others),
>>>
>>> I read your paper and I like the idea of the dual view because
>>> currently it is not possible to open the attribute editor from the
>>> table. On the other hand I am not convinced of the filter/selection
>>> proposal. IMHO one of the strengths when using GIS data is the unity
>>> of geometry and attribute data. Currently selecting a feature in the
>>> map also selects its attributes in the corresponding table and vice
>>> versa.
>>> examples:
>>> 1) Select in map and investigate attributes: If a filter was applied
>>> the data might not be visible in the table without clicking "selection
>>> to filter".
>>> 2) filter logical in table and investigate these features in the map:
>>> You would need an additional "filter to selection" button to handle 
>>> this.
>>> 3) field calculator: will it update the selected or the filtered
>>> datasets?
>>> I think the whole concept will confuse average users. I would favour
>>> to keep the well established solution of features being selected no
>>> matter where (table or map) the selection was performed.
>>
>> I think the reasoning for the change in the selection/filter paradigm
>> was rather poor in the document itself. There are other reasons which
>> are in favor of a change of filter/selection as well.
>>
>> E.g. If you want to manually select features out of different subsets.
>> Let's say you have a layer with a lot of features and you're looking for
>> a couple of cities (but not all of them) which have more than 100'000
>> inhabitants and some others which do not meet this criterion, but some
>> other criteria. At the moment, you can do this by sorting and scrolling
>> and maybe some other tricks, but it's not that easy. With the
>> independent filters, this would be a task of changing the filter and
>> Ctrl-Clicking the required features out of each subset.
>
> I see the point in this, but the case you describe could be solved 
> differently (that is at least theroretically :-). If the selection 
> tool would not always create a new selection (as is now) but enable 
> the user to either "add to selection" or "select within current 
> selection" or even "remove from selection" this would IMHO be more 
> straightforward for users.
>
I'm sorry, I'm not able to follow this description exactly. Could you 
please describe in detail how you imagine the process.
If possible, please also outline the scenario, where the user wants to 
check/update individually the attributes for all cities with more than 
100'000 inhabitants in the attribute view.

Please excuse my ignorance

Matthias