Why did my shapefile import fail?
Shapefile imports may fail for several reasons: An unknown projection was provided to OnTheMap (in this case, a popup window should tell you that the projection is unknown). In this case, you have a couple of options. If you have a GIS program that allows you to change projections, open your shapefile in that program and reproject it to USA Contiguous Albers Equal Area Conic and try loading the reprojected shapefile into OnTheMap. Or if you know the name of the projection, you can search for the EPSG code at either http://www.epsg-registry.org/ or at http://spatialreference.org/. A shapefile import may also fail because the shapefile is too complex or has too many features. If this appears to be the case (OnTheMap will freeze during the import process), then you should try the following steps: First: Remove all unnecessary features from the shapefile and keep only the one(s) to be used for the analysis. Second: If limiting the number of features doesn’t work, then try simplifying the f
