I have created a set of isochrones (3, 5, 10 minute walk times) from a point layer. I now want to dissolve the layer to make it more readable. However when I try to dissolve based on the field that specifies walk times I do not get the result I want. I have a pretty clear example I am trying to imitate but they do not explain how they did it.
Is there a way to do this in one step? I know I could select the polygon from the isochrones layer for each distance (3, 5, 10 mins) and then dissolve only selected features but I am looking for a way to do this in one step with the dissolve tool. Is this possible or should i just stick with the slower method of selecting and then dissolving individually?