[R] Hi , Is it possible select a different number of rows by each group with R????

[David Carlson]

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-------------------------------------
David L Carlson

-----Original Message-----
From: r-help-bounces at r-project.org
[mailto:r-help-bounces at r-project.org] On Behalf Of Marta Tobeña
Sent: Monday, April 21, 2014 10:08 AM
To: r-help at r-project.org
Subject: [R] Hi , Is it possible select a different number of
rows by each group with R????

Hi , Is it possible select a different number of rows by each
group with R????
I must to select different number (specific quantity in
field2:Table1) of rows in each group(field1:Table2). I have
these 2
tables:Table1Table2field1field2field1field3field4field51310.375S
pRm12610.416667SpRm23910.458333SpRm34310.5SpRm45310.541667SpRm56
310.583333SpRm67310.625SpJm18910.666667SpJm29610.708333SpJm31031
0.75SpJm411310.791667SpJm512310.833333SpJm613310.875SpJm714320.9
16667SpJm820.958333SpJm921SpJm1021.041667SpJm1121.083333SpJm1221
.125SpJm1321.166667SpJm1421.208333SpJm1521.25SpJm1621.291667SpJm
1721.333333SpJm18Thanks youMarta

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