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...ts. Months can be represented in digits, Roman numerals, or three-letter abbreviations, or they can be fully spelled out." >Warning # 1102 >An invalid numeric field has been found. The result has been set to the >system-missing value. >Command line: 7 Current case: 1 Current splitfile group: 1 >Field contents: '2005-01-11' >Record number: 1 Starting column: 1 Record length: 37 >Warning # 1102 >An invalid numeric field has been found. The result has been set to the >system-missing value. >Command line: 7 Current case: 1 Current splitfile group: 1...

Hello all, I have problem with setting up random effects. I have a model: y=x1+x2+x1*x2+z1+z1*x2 where x1, x2, x1*x2 are fixed effects and z1, z1*x2 are random effects (crossed effects) I use library(nlme) 'lme' function. My question is: how I should set up random effects? I did lme(y~x1+x2+x1:x2, data=DATA, random=~z1+z1:x2, na.action='na.omit') but it did not work.

Hi, I have an excel file with 10 columns and I am trying to create new excel files each with columns 1, 2, and columns 3-10. Does anyone know how to change the name of the file in a for loop so that the first new file will have columns 1, 2, 3 with a name and then the next file will have columns 1, 2, 4 with a different name and so on till i get to the 8th new file with columns 1, 2, 10? Thank

Hi all, Does any one know of any encryption/decryption algorithms in R? I'm not looking for anything robust - I want some way of printing output to the screen that the user can't read immediately, but can decrypt a little later. The main thing I don't want to the user to see is a number, so (e.g.) ROT13 isn't appropriate. Hadley -- Assistant Professor / Dobelman Family Junior