Something Very Easy

Using arun, data set, dat1
Is this type of thing what you want?

dat2  <-  subset(dat1, dat1$Play != "B" & dat1$Offense == "Y")
  with(dat2,table(Play, Offense))

John Kane
Kingston ON Canada
-----Original Message-----
From: smartpink111 at yahoo.com
Sent: Tue, 21 May 2013 18:57:56 -0700 (PDT)
To: r-help at r-project.org
Subject: Re: [R] Something Very Easy

HI,
I am not sure about what you expect as output.

dat1<- read.table(text="
Offense Play
Y??????? A
N??????? B
Y??????? A
Y??????? C
N??????? B
N??????? C
",sep="",header=TRUE,stringsAsFactors=FALSE)

?with(dat1,tapply(Play,list(Offense),table))
#$N
#
#B C
#2 1
#
#$Y
#
#A C
#2 1

#or
with(dat1,tapply(factor(Play),list(Offense),table))
#$N
#
#A B C
#0 2 1
#
#$Y
#
#A B C
#2 0 1

A.K.

I have lines of data that look like this:

Offense Play
Y        A
N        B
Y        A
Y        C
N        B
N        C >
with a bunch of other variables.

I just want to get a table like
table(Play[Offense=="Y"])?>but one that would return, for the data
above:
A 2
C 1

Instead of what I get now, from
table(Play[Offense=="Y"]): >
A 2
B 2
C 2

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Something Very Easy

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