Re: [R] subsetting

[Douglas Bates]

You are most of the way to the answer when you use the word "subset". 
There is a subset function to do exactly this.  You probably want 
something like

subframe <- subset(myDataFrame, id %in% myIdSample)
Peter Hyde wrote:
Hi!  I have never used this before, so please forgive my lack of proper
protocol...
Would someone please tell me how to subset a dataframe?
I have a table of data with x & y (spatial) coordinates, 2 attributes
(tree height and biomass) and a unique identification number for each
record
i have also created an array of random numbers equal to the number of
records in my data frame
i am trying to subset, in order to get the records that correspond to my
unique id numbers
basically, i am trying to figure out the equivalent to the "where" command
in IDL (which I understand is FORTRAN-like)
any insight would be greatly appreciated!!
thanks!
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