[Qgis-developer] New plugin Dynamic Layers - Change layers datasource with variables

[kimaidou]

And a new video showing how to use a vector layer as a data source for
variables
https://vimeo.com/141546964

Cheers,
Michaël

2015-10-06 16:40 GMT+02:00 kimaidou <kimaidou at gmail.com>:

> Hi all,
>
> I have just released the plugin Dynamic Layers which let you
>
> * configure a "dynamic datasource" for any layer with variables. You can
> use a syntax like {$myvar}
> * Configure a table of variable values to use as replacements
> * Use a vector layer as a source for this variables ( fields name must
> correspond to variable names
> * Define a layer as "extent layer" on which to zoom to full extent when
> aplying variables
>
> Then you can apply the variables on the configured layers to see the
> changes in you project, and save the project if you want.
>
> Use cases :
> * You have some PostGIS layers with subqueries such as
> table=(SELECT * FROM mytable WHERE country = 'France')
>
> and you have data for the whole world. You can use the plugin to configure
> a datasource such as
> table=(SELECT * FROM mytable WHERE country = '{$COUNTRY}')
>
> And then set the variable COUNTRY to 'Spain' or wichever country.
>
> You can also change the path to shapefiles, such as
> "/my/folder/mydata_{$COUNTRY}.shp"
>
> A video is sometimes better than a description :
> https://vimeo.com/141541813
>
> Source code here:
> https://vimeo.com/141541813
>
> Documentation in progress...
>
>
> Any feedback welcome
>
> Regards
> Michaël
>
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