[Openspace] GeoDa and missing observations
john.heppen at uwrf.edu
Fri Jun 22 11:10:23 CDT 2007
A quick fix would be to remove the cases without data by editing the
shapefile (database) or maybe you could assign a mean value to the missing
> When using GeoDa, I often have to deal with datasets that have a
> varying number of missing observations. My impression is that the
> software automatically converts these to zeroes. This, however, is
> problematic when calculating spatial lags, since they obviously come
> way off.
> I wondered if there is a way to instruct GeoDa that those values are
> missing and not zeroes, so that it can react appropriately when
> working with the spatial lags (e.g.if there is 1 missing value for a
> certain w_value, divide by n-1).
> Jordan B Marvakov
> Ph.D. Student, Economics Dept.
> Clark University, Worcester, MA
> Openspace mailing list
> Openspace at sal.uiuc.edu
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