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The following three functions are designed to make manipulation of dataframes easier. I won't write detailed docs just now, but if you follow the example below, you should get the general picture. Comments are welcome, esp. re. naming conventions. Note that these functions are definitely not portable to S because they rely on R's scoping rules. Not that difficult to fix, though: The nm

I have a file: x y z 0.025 0.025 1.65775 0.025 0.050 1.62602 0.025 0.075 1.63683 0.025 0.100 1.91847 0.025 0.125 2.00913 0.025 0.150 1.82222 0.025 0.175 1.70901 0.025 0.200 1.39759 0.025 0.225 1.39089 0.025 0.250 1.04762 If I read the file like this: data<-read.table("file.dat") How do I access the vectors x,y,z that are inside the dataframe data? I studied Venables and