I'm testing out QGIS for the first time, and I'm trying to find a way to highlight index contours.
I'd like to be able to do so via the layer Symbology, or if necessary by separating out the index contours I want into a separate layer.
I've tried building a query to select every 10th contour using the generate_series expression, but I'm not well versed in crafting these and thus far I haven't been successful.
