So are the names of the columns in the dataset x, y, and z? or are
they area, concentration, and year? you seem to be mixing these
together? If you provide a minimal reproducible example (provide some
data with dput, or the commands to generate random data, or use a
built in dataset) then it makes it easier for us to help you.
Is the z/year variable a set of character strings? a factor? or a
numeric/integer variable?
Assuming the column names are x, y, and z and that z is the numeric
year and data is a data frame, then here are some options that should
work:
plot( data$x[ data$z >= 2012 ], data$y[ data$z >= 2012 )
with( data[ data$z >= 2012, ], plot(x,y) )
plot( y~x, data=data, subset= z >= 2012 )
Also see `fortune("dog")` about choosing names for data frames.
On Mon, Feb 17, 2014 at 9:18 AM, arun <smartpink...@yahoo.com> wrote:
> Hi,
> Try:
> set.seed(49)
> dat1 <- data.frame(year=
> rep(2010:2013,c(10,8,9,13)),x=sample(1e4,40,replace=TRUE),y=sample(40,40,replace=TRUE))
> plot(x~y,data=dat1,subset=year > 2012)
> #or
> with(subset(dat1,year > 2012),plot(y,x))
>
>
> A.K.
>
>
>
> Hi R people
>
> This might take me the whole day to figure out, instead I will ask so I can
> save some PhD time.
>
> I want to plot a subset of my data.
>
> x = area
> y = concentration
>
> these data are sorted by
>
> z = year (2008 to 2013)
>
> So I want to make a plot where I can see x and y >=2012 and <2012.
>
> I have tied
> plot(data$y[year>='2012'], x[year>='2012']) That did not work.
>
> also plot(data$y, data$x, year>'2012') did not give the right data plot
>
> Any suggestions on how to do this would be appreciated.
> thanks
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
--
Gregory (Greg) L. Snow Ph.D.
538...@gmail.com
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
