Hello, I am trying to calculate predicted values derived from one dataset into a hypothetical dataset. I tried this line of code: graphdata$fmgpredvalues <- predict(Acs250.3.4, graphdata) and received the following error message: ERROR: ZXend[1], drop = FALSE] %*%lmeFit$beta I have made sure all variable names are the same between the two datasets and all factors are appropriately labeled. I appreciate any insight. Thanks, Brittany [[alternative HTML version deleted]]
______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.