Maptitude - http://research.umbc.edu/~roswell/maptitude.html I'm working with a state-wide data file of block group data involving approx. 3,400 BGs. I have tagged all the BGs with another geographic code and am attempting to aggregate BG data for the new tagged geography (e.g. 26 regional watershed polygons). Whether I choose a user-defined aggregation method or accept the default aggregation type, I get the same result....a fatal "floating point error" which crashes the system. I assume this may be the result of calculating averages where the attempted arithmetic involves a division by zero. Does anyone have a suggestion of a solution/work-around, etc? I only really care about aggregating population counts or projections for selected older cohorts to get a feel for the older demographics of each watershed. Any suggestions from more-informed Maptitude users would be appreciated. Kevin Byrnes, Demographer Va. Dept. for the Aging ______________________________________________________________________ To unsubscribe, write to [EMAIL PROTECTED]
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