How can I extend GWR model to GWRK model? I have obtained the residuals from GWR, but I don't understand how can I add the residual kriging for extending GWR model.
which software do you use? In R, it is really simple: you can conduct the two main steps of RK/KED separately. Any model (e.g. GWR) can be used for detrending and its residuals can then be interpolated by kriging. Finally, prediction of the trend by GWR should simply be added to the prediction of the residuals by kriging.
Hello, sure, the GWR tool in ArcMap calculates the residuals (https://desktop.arcgis.com/en/arcmap/10.5/tools/spatial-statistics-toolbox/geographically-weighted-regression.htm#GUID-E9FD5D8B-103B-40FC-93DD-E84BB2F1C7E9), and you can use this for kriging.