[R] Query about extracting subsets from a table

[jim holtman]

Here is how you can do the extraction back to the original input:

data <- data[ data$log10escore < -3, ]


On 1/23/07, lalitha viswanath <lalithaviswanath at yahoo.com> wrote:
> Hi
> I am trying to process tabular data as follows:
>
> Data in the input file is of the form
>
> genome1 genome2 tree-dist log10escore
>
> Genome1 and genome2 are alphabetic.
> Tree-dist and log10escore are numeric.
>
> I wish to extract only those  rows from this table
> where the log10escore is less than -3.
>
>
> data <-read.table(filename);
> data$log10escore = data$log10escore[ data$log10escore
> < -3];
>
> I would like to use this pruned list of escores to get
> the corresponding genomenames and treedist.
>
> I did not find anything useful in the FAQs and Notes
> on R for this part of the data extraction.
>
> As I am just beginning programming in R, I would
> appreciate your input about this.
>
> Thanks
> L
>
>
>
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-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?