[R] persp question

[David Winsemius]

<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))
> 
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