I'm using ArcGIS 9.3, and I am having difficulties with the dissolve tool. I have a map with many voting precincts (approx 900) that I want to dissolve into council districts (8 of them).
I use the dissolve tool and choose the council district as the dissolve field and get 8 polygons. However, the borders of the new polygons don't follow the borders of the maximal set of original polygons in each council district. In particular, the borders are wiggly where the original borders are more or less straight.
I am attaching a pdf that shows the original map, the dissolved map, and a zoomed-in portion of the two overlaid to get a sense of the problem.
Is there any way to fix this problem?
Thanks very much,
University of Toronto