[R] dynamic object names?

[Uwe Ligges]

samir at guidi.ch wrote:

> I am trying to extract data from a matrix. Let's say that i am interested in
> extracting 
> rows from a 4x4 matrix. Instead of giving a fix name to these 4 rows I would
> like to add a number to prefix. As result I should get 4 objects named: 
> 
> prefix_1 
> prefix_2 
> prefix_3
> prefix_4
> 
> I attepted to solve the problem with a loop, but without success. Any hints??


1. In fact, you do not really want it.
2. You want to use "<-" rather than "->" for assigments. Reading your 
code is really hard when you are using this non-conventional way.
3. In order to answer your question: This is the FAQ "How can I turn a 
string into a variable?". The posting guide asks you to read these FAQs 
before sending questions to R-help. Please do so.

Uwe Ligges




> 
>>matrix(LETTERS[1:16], ncol=4) -> MM
>>MM
> 
>      [,1] [,2] [,3] [,4]
> [1,] "A"  "E"  "I"  "M" 
> [2,] "B"  "F"  "J"  "N" 
> [3,] "C"  "G"  "K"  "O" 
> [4,] "D"  "H"  "L"  "P" 
> 
> 
> for (xxx in 1:4) {
> MM[xxx,] -> prefix_xxx;
> }
> 
> 
> Thanks
> 
> samir
> 
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