[Openspace] LISA used in Geoda and ArcInfo

[Patrick Yang]

Hello everybody,

Does any one have both experiences of computing LISA in Geoda and ArcInfo
package of Spatial Statistic Tools. I ran the same set of areal data based
on the same spatial weight matrix (the first order contiguity), but got very
different outcomes:

- most part of area are recoginized as low-low significally in Geoda, but as
random process based on the Z-core (cut off by 1.96) in ArcInfo
- There is no high-high combination in Geoda, but can find hot spots in
ArcInfo
- The caculated local Moran I is different in the two softwares



Can anybody kindly help me to explain the reason? PS: I choose the
standarized row for the weight matrix in ArcInfo but I guess in GeoDa it is
the same configuration. if it is not so, please point it out. Any what other
reasons? Thank you.


Bests,
Zhenshan

-- 
Department of Human Geography & Urban and Regional Planning
Utrecht University (UU)

Urban and Regional Planning and Geo-Information Management
International Institute for Geo-Information Science and Earth Observation
(ITC)