https://community.esri.com/t5/arcgis-pro-questions/spatial-autocorrelation-and-rmse/m-p/1065975#M41755 <P>I have a time series with two maps that represent forest cover in two different years. I have created a continues raster surface that represents deforestation rates based on zonal (Moving window) statics calculation using different windows sizes for testing. I have divided the raster map into several grids of 10x10 kms. I want to use the RMSE to evaluate my model performance.</P><P>When the surface is divided into grids, I can obtain a sample of thousands of grids. I want to evaluate the accuracy of the maps with another historical deforestation period.</P><P>Do I need to have samples that are not spatially autocorrelated, instead of using all the grids that I have to evaluate the RMSE of the models?</P><P>Or can I calculate the RMSE of the models with all the grids and without considering that the data are highly spatially autocorrelated?</P><P>In other words, does the RMSE require non spatially autocorrelated samples?</P> Tue, 08 Jun 2021 13:26:37 GMT Juan_FelipeVillegas 2021-06-08T13:26:37Z https://community.esri.com/t5/arcgis-pro-questions/spatial-autocorrelation-and-rmse/m-p/1065975#M41755 <P>I have a time series with two maps that represent forest cover in two different years. I have created a continues raster surface that represents deforestation rates based on zonal (Moving window) statics calculation using different windows sizes for testing. I have divided the raster map into several grids of 10x10 kms. I want to use the RMSE to evaluate my model performance.</P><P>When the surface is divided into grids, I can obtain a sample of thousands of grids. I want to evaluate the accuracy of the maps with another historical deforestation period.</P><P>Do I need to have samples that are not spatially autocorrelated, instead of using all the grids that I have to evaluate the RMSE of the models?</P><P>Or can I calculate the RMSE of the models with all the grids and without considering that the data are highly spatially autocorrelated?</P><P>In other words, does the RMSE require non spatially autocorrelated samples?</P> Tue, 08 Jun 2021 13:26:37 GMT https://community.esri.com/t5/arcgis-pro-questions/spatial-autocorrelation-and-rmse/m-p/1065975#M41755 Juan_FelipeVillegas 2021-06-08T13:26:37Z https://community.esri.com/t5/arcgis-pro-questions/spatial-autocorrelation-and-rmse/m-p/1066189#M41776 <P>Not clear that I follow.&nbsp;</P><P>If you have two maps that show forest cover in two different years, what does the difference look like.</P><P>&nbsp;</P> Tue, 08 Jun 2021 21:36:40 GMT https://community.esri.com/t5/arcgis-pro-questions/spatial-autocorrelation-and-rmse/m-p/1066189#M41776 DanPatterson 2021-06-08T21:36:40Z