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Applying function to vector by index
From: |
Iago Mosqueira |
Subject: |
Applying function to vector by index |
Date: |
Mon, 9 Dec 2002 16:22:17 -0000 |
Hi,
I have a long vector classified in ten bins of different length according to
another vector. I want to estimate the variance, or any other function, of
the values from the first vector for each of the categories described by the
second, without using a loop. Is there any obvious way of doing this I am
overlooking? In R one could do
sapply(split(d,idx),var)
where d is my data vector and idx the index vector.
Many thanks,
iago
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- Applying function to vector by index,
Iago Mosqueira <=
- Re: Applying function to vector by index, Mike Miller, 2002/12/09
- Re: Applying function to vector by index, Paul Kienzle, 2002/12/09
- Re: Applying function to vector by index, Iago Mosqueira, 2002/12/09
- Re: Applying function to vector by index, Paul Kienzle, 2002/12/09
- Re: Applying function to vector by index, Paul Kienzle, 2002/12/09
- Re: Applying function to vector by index, Andy Adler, 2002/12/09
- Re: Applying function to vector by index, Schloegl Alois, 2002/12/10
- Re: Applying function to vector by index, Paul Kienzle, 2002/12/12
- Re: Applying function to vector by index, Andy Adler, 2002/12/12
- Re: Applying function to vector by index, Schloegl Alois, 2002/12/12