persp question
<markleeds at verizon.net> wrote in news:21684940.337761205260816591.JavaMail.root at vms229.mailsrvcs.net:
someone sent in a question earlier about doing something in 3D so i took a stab at it purely for educational purposes ( i'm not even sure that I understood the question actually ). Unfortunately, persp gives me an error that I don't understand because it says "object y not found". I'm sending y in as a parameter to persp similar to what ?persp shows in one of oits examples so I must not be understanding something. the code is below. thanks.
I get a different error when I try to run your code, but I don't think that matters. You are not sending persp(), x's and y's that meet its requirements. See the help file for persp: "Arguments x, y locations of grid lines at which the values in z are measured. These must be in ascending order. " I do not think you have z's for each of your (x,y) pairs. And your values are not increasing.
David Winsemius
>
> DF <- read.table(textConnection("station month bas
> 190 5 0.00
> 190 7 1.563
> 190 10 0.000
> 190 11 0.000
> 202 4 18.750
> 202 5 18.750
> 202 7 6.250
> 202 10 4.80
> 202 11 3.125
> 198 4 18.750
> 198 10 3.20
> 198 11 12.500
> 205 4 0.000
> 205 5 0.000
> 205 10 0.000
> 205 11 0.00"),header=TRUE,stringsAsFactors=FALSE)
>
> #print(DF)
> #print(str(DF))
>
> temp1 <- seq(1,max(DF$month),length.out=max(DF$month))
> temp2 <- seq(min(DF$station),max(DF$station),by=1)
> print(temp1)
> print(temp2)
>
> persp(x = seq(1,max(DF$month),length.out=max(DF$month)),
> y = seq(min(DF$station),max(DF$station),by=1),
> z = DF$bas,
> xlim=range(x), ylim=range(y), zlim=range(z))
>
> ______________________________________________
> R-help at 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.
>
>