Data Metrics Z Moment Statistics
There are five groups of data metrics: Z Order Statistics, Z Moment Statistics, Other Z Statistics, Data Location Statistics, and Terrain Statistics. The Z Moment Statistics calculate information about the values at the nodes.
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Data Metric |
Definition |
Equation |
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Mean |
each nodal value is the arithmetic average of the data selected by the specified sector search centered at that node |
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Standard Deviation |
each nodal value is the standard deviation of the data selected by the specified sector search centered at that node |
where |
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Variance |
each nodal value is the variance of the data selected by the specified sector search centered at that node |
where |
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Coef. of Variation |
The Coef. of Variation data metric generates an output grid for which each nodal value is the local standard deviation divided by the local mean of the data selected by the specified sector search centered at that node. Note that this measure is useless for data whose local mean values are close to zero; this includes data that changes sign within the domain of interest. |
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is the mean of the selected data
