[R] comparison of these types is not implemented

Hi All, Can you tell me why I get the error message below? It's driving me nuts. Thanks, Tom r_squared [[1]] [1] 0.9083936 [[2]] [1] 0.8871647 [[3]] [1] 0.8193883 [[4]] [1] 0.728157 [[5]] [1] 0.8849525 [[6]] [1] 0.8459416 [[7]] [1] 0.6702318 [[8]] [1] 0.02997816 [[9]] [1] 0.8974268

[R] Counting in Matrix

Hi All, Is there an easy way to count TRUEs for each row? Thanks, Tom x1x2x3x4 1 TRUE TRUE TRUE TRUE 2 FALSE TRUE TRUE TRUE 3 TRUE FALSE TRUE TRUE 4 FALSE FALSE TRUE TRUE 5 TRUE TRUE FALSE TRUE 6 FALSE TRUE FALSE TRUE 7 TRUE FALSE FALSE TRUE 8

[R] Creating a string

Hi All, Thanks for your help. I want to add a letter x and a number to a string like x1. How do I do that? Thanks, Tom -- View this message in context: http://n4.nabble.com/Creating-a-string-tp963915p963915.html Sent from the R help mailing list archive at Nabble.com.

[R] R2 in lm function

Hi All, After I run the lm function, where (which variable) do I find my R-squared for further calculations? Thanks, Tom -- View this message in context: http://n4.nabble.com/R2-in-lm-function-tp963958p963958.html Sent from the R help mailing list archive at Nabble.com.

[R] Loop counter used in variable

Hi All, I need to run muliple lm functions. My independent variables are called dataset$x1, x2, x3, x4 etc. How can I use a loop counter variable to replace the numbers? fit1=lm(dataset$y~dataset$x1) fit2=lm(dataset$y~dataset$x2) fit3=lm(dataset$y~dataset$x3) fit4=lm(dataset$y~dataset$x4)