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Another question on predict.sarlm! Here is the line of code that is producing the error: pred <- spatialreg::predict.sarlm(model, df, test.listw,zero.policy = T) Here is the error: Error in mat2listw(W, row.names = region.id.mixed...
Dear Roger, I have an inverse distance matrix that has been converted to listw object via mat2listw function. To predict out-of-sample data, I made 2 listw objects -- one that is based upon the training data -- this is used...
Dear Roger, Thanks for your reply and explanation! I am just exploring the aspect of geodemographics in store locations. There are many factors that can be considered, as you have highlighted! Thank you so much for taking the time to...
Dear Roger, Thank you so much for your detailed response and pointing out potential pitfalls! It has prompted me to re-evalutate my approach. Here is the context: I have some stores' sales data (this is my training set of...
Dear All, I am trying to do a out-of-sample prediction using predict.sarlm but I am getting the 'unknown mismatch' error from predict.sarlm. I have a training and a testing spatial points dataframe (train_spdf and test...
Dear Roger, How can we deal with a huge dataset when using dnearneigh? Here is my code: d <- dnearneigh(spdf,0, 22000) all_listw <- nb2listw(d, style = "W") where the spdf object is in the british national grid CRS: +init...
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