[Qgis-user] QGIS variables calculated from other variables

[Nikolai Bezdna]

Is it possible to set qgis variable calculated from another one? 
Like this: @road_width2 = @road_width1 * 1.5
So I can style in a CartoCSS manner - set only the basic variables and calculate lots of others on the fly.
That’ll greatly help with some complicated styles.
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