I am trying to create a legend in QGIS 2.18.22 so that it only shows the features that are in the current map extent in the print composer. I have been selecting the 'only show items inside current atlas feature' tick box however nothing changes.
I still end up with a massive legend like this even though only a fraction of those features are visible.
I am reluctant to clip the layer to the current view extent to solve the problem that way as when I scan to another part of the map I will have to do the same thing again and I may need to make multiple maps off this layer. Alternatively I could also remove the classifications for each legend item that isn't visible under properties in the main map view however again every time I make a map in a different area I would have to repeat this.
What is the solution to this problem?