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2009 Jun 21
1
Warning messages when using rbind
...uot;, head = T) testbind1=rbind(testread12,testread11) testbind2=rbind(testread11,testread12) The testrbind1 line generates the following message: "Warning message: In `[<-.factor`(`*tmp*`, ri, value = c(0.00557998, -0.058016069, : invalid factor level, NAs generated" However the testrbind2 line works fine. Although the data in the files is different, the format (columns, etc) should be identical. The fact that it works in one order, but not the other, makes it very difficult for me to understand what the problem is. Files attached. Any suggestions gratefully received. Thanks, G...