Problem with Splus plot function

[math_daddy]

Hello.

I am having a problem with the plot function. When I try to plot a linear regression formula, all of the plots show up except the Cook's Distance (which I don't want anyway) and the following error is displayed:

Problem in eval(oc, list()): Object "Dat" not found
Use traceback() to see the call stack

Dat is just a data.frame object that the vectors involved in the regression are coming from. I don't understand why it isn't found, since none of the other graphs should be produced if this is really the case. The following is a minimal working example:


temp <- function()
{
temp1 <- runif(n = 100,min = 0, max = 10)
temp2 <- temp1 + rnorm(n = 100,mean = 0, sd = 1)
temp3 <- as.factor(temp2 < 0)
lin <- lm(temp1 ~ temp2 + temp3)
plot(lin)
}


Since I'm not using a data.frame here, the error message is a little different, but essentially still says that the object temp3 cannot be found. I would appreciate any help.

Thank you very much.

[bugman]

Hey Math Daddy

Remove the closed brackets after function so the braces enclose the script and see how this goes. I just run this through R and I get cooks distances etc and no warnings.

cheers

Phil

[math_daddy]

Hey Phil.

Thanks for the suggestion. Unfortunately, the script doesn't compile if I remove the braces. Not sure what's causing this problem. Any help would be appreciated.

Thank you very much.

[bugman]

Leave the braces in follwing function and remove () preceeding function:

This works perfectly from my end:

temp <- function
{
temp1 <- runif(n = 100,min = 0, max = 10)
temp2 <- temp1 + rnorm(n = 100,mean = 0, sd = 1)
temp3 <- as.factor(temp2 < 0)
lin <- lm(temp1 ~ temp2 + temp3)
plot(lin)
}


Phil

[math_daddy]

If I remove the round braces () from the script I get the following error when I try to compile:

Problem in parse(text = "script.run(exprs.literal={\ntemp..: Syntax error: illegal "{" after "function" on input line 3
Use traceback() to see the call stack

Note that I'm using Splus and not R.

Thank you.

[math_daddy]

This is what my command line looks like when I run the script above:

> temp()
Problem in eval(oc, list()): Object "temp3" not found
Use traceback() to see the call stack

However, before this bizzare error occurs, 5 of the 6 plots are produced (all except Cook's Distance). What is causing the problem, and how do I fix it?

It may be interesting to note that, if I put this exact code directly into the command line, it works. I would really appreciate any help.

Thank you very much.