[R] Plot can't forget bad parameters

[Ross Boylan]

On Thu, 2003-10-02 at 16:54, Toby.Patterson at csiro.au wrote:
> Try 
> 
> rm(last.warning)
> 
> -----Original Message-----
> From: Ross Boylan [mailto:ross at biostat.ucsf.edu] 
> Sent: Friday, 3 October 2003 9:10 AM
> To: r-help
> Subject: [R] Plot can't forget bad parameters
> 
> 
> When I give plot some bad paramaters, it keeps giving me error messages
> forever after.  I think the last time this happened, I even got the
> error messages for completely unrelated, non-graphical functions.
> 
> Here's a recent example:
> > plot(it[[31]][,c(1, 3)], type="b", usr=c(0, 20, -20, 5))
> Warning messages: 
> 1: parameter "usr" couldn't be set in high-level plot() function 
> 2: parameter "usr" couldn't be set in high-level plot() function 
> 3: parameter "usr" couldn't be set in high-level plot() function 
> 4: parameter "usr" couldn't be set in high-level plot() function 
> 5: parameter "usr" couldn't be set in high-level plot() function 
> 6: parameter "usr" couldn't be set in high-level plot() function 
> > plot(it[[31]][,c(1, 3)], type="b", ylim=c(-20, 5))
> Warning messages: 
> 1: parameter "usr" couldn't be set in high-level plot() function 
> 2: parameter "usr" couldn't be set in high-level plot() function 
> 3: parameter "usr" couldn't be set in high-level plot() function 
> 4: parameter "usr" couldn't be set in high-level plot() function 
> 5: parameter "usr" couldn't be set in high-level plot() function 
> 6....
> 
> Is this a bug, or have I missed something?
> R 1.7.1

Well, that's very odd.  I did the rm(), and it printed out the warnings
again.  Then I repeated the two commands above--only this time, there
were no warnings after the second (i.e., things worked OK).