I have two map frames on my composer. One is a regional, large scale map, and the other is a local, small scale map. I would like the scale of the regional map to automatically update based on the scale of the local map.
For instance, my local map is map 0. I would like the expression in my scale field for my regional map (Map 1) to be 'Map 0 scale + 35000'. Is there a way to do this in the composer?