[R] Create matrix with column names wiht the same prefix xxxx and that end in 1, 2

Jeff Newmiller jdnewm|| @end|ng |rom dcn@d@v|@@c@@u@
Mon Jul 3 20:11:03 CEST 2023


On July 3, 2023 11:00:32 AM PDT, "Sorkin, John" <jsorkin using som.umaryland.edu> wrote:
>I am trying to create an array, myvalues, having 2 rows and 4 columns, where the column names are j,k,xxx1,xxx2. The code below fails, with the following error, "Error in dimnames(myvalues) <- list(NULL, zzz) : 
>  length of 'dimnames' [2] not equal to array extent" 
>Please help me get the code to work.
>Thank you,
># create variable names xxx1 and xxx2.
>for (j in 1:2){
>  name <- paste("xxx",j,sep="")
>  string <- paste(string,name)
>  print(string)
># Creation of xxx1 and xxx2 works
># Create matrix
>myvalues <- matrix(nrow=2,ncol=4)
># Add "j" and "k" to the string of column names
>zzz <- paste("j","k",string)
># assign column names, j, k, xxx1, xxx2 to the matrix
># create column names, j, k, xxx1, xxx2.
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>and provide commented, minimal, self-contained, reproducible code.

Sent from my phone. Please excuse my brevity.

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