semi-variogram
GIS Analysis

Semi-Variogram: Nugget, Range and Sill

In the case of a semi-variogram, closer things have less variability and are similar. While things farther away are less predictable and are less related.

mean absolute error
GIS Analysis

Mean Absolute Error MAE in GIS

This guide shows how Mean Absolute Error in GIS is used. We give a step-by-step instructions how to calculate MAE in Excel and a quick formula to use.

Root Mean Square Error
GIS Analysis

Root Mean Square Error RMSE in GIS

Root Mean Square Error (RMSE) in GIS can be used to calculate how much error there is between predicted and observed values. (ex. error in a DEM)