R help - Sep 2015 - Extracting column value from csv file according to if else and & operator

I should extract the value according to the condition above

On Thu, Sep 3, 2015 at 7:57 AM, Navien [via R] <
ml-node+s789695n4711782h41 at n4.nabble.com> wrote:
> Hi all
> I have a csv file and i would like to extract the value of it with
> specific range fof the last column for example; F>2 & F<2 &
P=1, and then
> write the result to csv file.
>
> the data is :
>
> x1 x2 x3 x4 x5 x6
> 9.488404 9.470895 9.282434 9.366707 9.955383 9.640816
> 8.63063 8.558311 8.788391 8.576231 8.671588 8.84298
> 9.354749 9.367669 9.259953 9.421538 9.554635 9.603745
> 9.944864 9.950428 10.19102 10.07351 10.0327 10.13079
> Fc p
> 1.037883 0.320095
> 1.057708 0.060132
> 1.065191 0.111192
>
>
>
> I tried the code bellow but , it does not work?
>
> FCPval <-
>
read.csv("C:/Users/shawin/Desktop/RProgramms/RAdipose/FCPval.csv")
>
>  c=as.data.frame(FCPval)
>
> for (i in 1:rowN){if (C$F[i] >= 2 && C$F[i]<=-2&&
C$p[i]<=3){
>
> dfrmPFC=data.frame(Fc=FC,p=p)}
> }
>
> the error is :
>
> Error in C$FC : object of type 'closure' is not subsettable.
>
> can i  extract the value according to the condition
>
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