[R] Writing to a file

[R. Michael Weylandt]

You don't say how you are writing to a file, but some methods have an
append = TRUE option that might be helpful.

Your code looks really inefficient as well: I don't have time to look
at it fully now, but it seems to me that you can vectorize the inner
loops quite directly:

for(j in ncol(y)){
   if(y[i,j]=="Func_0005515"){
       counter = counter + 1 }
   }
}

could become

counter = counter + sum(y[i, ] == "Func_0005515")

Michael

On Mon, Feb 6, 2012 at 5:50 AM, Felicity <felicity-th at hotmail.com> wrote:
> Dear All!!
>
> I am also new in R
> and trying to write my results into a file I post here..hopefully is the
> proper place
> To be more secific  I have this loop
>
>
> counter = 0
>  for (i in 1:nrow(y))
>  {
>  for (j in 1:ncol(y))
>  {
>  if (y[i,j]=="Func_0005634") {
>         counter = counter + 1 }
>  if(y[i,j]=="Func_0005737"){
>         counter = counter + 1 }
>  if(y[i,j]=="Func_0005515"){
>        counter = counter + 1 }
> }
>  if(counter == 2) {
>         k<-structure(list(print(y[i,1])), class = "data.frame")
> }
>  if(counter == 3 ){
>         l<-structure(list(print(y[i,1])), class = "data.frame")
>        }
>  counter = 0
>  }
>
>
> for counter==2 or counter ==3
> I want to get print(y[i,1])
> where in column 1 exists the name of the protein
> whereas in the rest columns exist somewhere randomly the strings im looking
> for
>
> I want to get the names of the proteins in a file and those that have either
> 2 or 3 functions be named as cancer.
>
> the specific part of code gives me as a result in the command line this (is
> a sample cause im working on 8500lines)
> [1] Prot_10035
> 8527 Levels: Prot_0 Prot_1 Prot_10 Prot_100 Prot_1000 Prot_10000 ...
> Prot_9996
> [1] Prot_10041
> 8527 Levels: Prot_0 Prot_1 Prot_10 Prot_100 Prot_1000 Prot_10000 ...
> Prot_9996
> [1] Prot_10045
> 8527 Levels: Prot_0 Prot_1 Prot_10 Prot_100 Prot_1000 Prot_10000 ...
> Prot_9996
>
>
> which is fine i can see the names of the proteins but i cant use them so to
> label them
> When I try to write it in a file ..then is kept only the last result because
> unfortunatelly
> he overwrites himself :(
>
> How can I use those data? How can I write them in a file and add as an extra
> column the word cancel
> for those containing the specific functions?
>
> Any hint you may give me it would be more than helpful for me!
> Thank you a lot in advance!
> Looking forward to your reply :)
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/Writing-to-a-file-tp3070617p4360889.html
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>
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