I have a polygon shapefile and an Euclidean distance raster (showing distance to features in a third dataset). I need to find the distance (to the third dataset) within which a certain percentage of the features in the polygon shapefile fall. (I guess I could convert the polygons to points by computing their centroids). I presume that this can be done using some tool in the Spatial Statistics toolbox in ArcGIS 10, but which tool? If not with spatial statistics, is there any other way to do this in ArcGIS 10?
Thanks in advance.