001571: The analysis options you selected require a minimum of <value> <value> with valid data in the analysis field in order to compute hot and cold spots.

Description

There are fewer than 30 input features with valid data in the analysis field for analysis. Records with NULL values for the analysis field, for example, are skipped.

Solution

Check that the Input Features have a minimum of 30 features with valid geometry and number (non-NULL) values for the Analysis Field. Correct NULL values and missing geometry for a minimum of 30 features in order to continue with this analysis.