[Qgis-user] Looking for a function or variable to retrieve canvas extent

[Alexandre Neto]

I guess those variables are simply not accessible from the attribute table
window. So there is no way you can use the map canvas for conditional
formatting.

DelazJ <delazj at gmail.com> escreveu no dia quarta, 21/06/2017 às 16:34:

> Thanks Alexandre, but it's too hot to have me doing some maths right now
> :-)
>
> Actually, what I want to do is to apply some conditional formatting in the
> attribute table using the canvas extent values but for some reason, those
> variables you mentioned are not exposed in that expression builder dialog.
> There's also a @map_extent variable in master which returns the geometry
> (for composer map only? or canvas also?) but like others, it's not exposed.
>
>
> 2017-06-21 17:10 GMT+02:00 Alexandre Neto <senhor.neto at gmail.com>:
>
>> How about using the map_extent_center, map_extent_height and
>> map_extent_width to create a geometry?
>>
>>
>> DelazJ <delazj at gmail.com> escreveu no dia quarta, 21/06/2017 às 14:53:
>>
>>> Hi,
>>>
>>> In the Expression dialog, is there a function or a variable that can
>>> return the current map canvas?
>>> I would like for example apply a value to all features that fall within
>>> the current map canvas but fail to find the right combination (if ever
>>> possible).
>>>
>>> Thanks for any hint,
>>> Harrissou
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>>
>> --
>> Alexandre Neto
>> ---------------------
>> @AlexNetoGeo
>> http://sigsemgrilhetas.wordpress.com
>> http://gisunchained.wordpress.com
>>
>
> --
Alexandre Neto
---------------------
@AlexNetoGeo
http://sigsemgrilhetas.wordpress.com
http://gisunchained.wordpress.com
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