Abro um shape do Estado de São Paulo no arcGIS 10 (SIRGAS 2000) e quando escolho no toolbox a opção Spatial Autocorrelation (Morans I) me retorna esta mensagem: 000916 The input feature class does not appear to contain projected data
Please excuse me answering in English.
The error message means that the data must be in a projected coordinate system to properly apply Moran's I.