[Qgis-user] Variables in print composer

[Martin Stubbs]

On 23/06/16 08:30, Uwe Fischer wrote:
>
> Hello List,
>
> what is the use of variables in print composer? A map frame has 
> variables assigned like map_extent_height and _width. But how to make 
> use of those variables? If I try to place a rectangle around the map 
> frame using the determined extent variables (plus something), I cannot 
> use the variables. There is a ‚data defined override‘ section in the 
> Position and size dialog for rectangles, but when I select ‚variable‘ 
> it tells me that there are no variables, which seems to be nonsense.
>
> Best regards, Uwe
>
>
Uwe,

When you select a Data_defined_override in Position and size, pick edit 
from the list instead of variable. In the Expression string builder you 
will find map_extent_height in the Variables list.

Regards
Martin
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