[R] override ask = TRUE in plot.formula

[Uwe Ligges]

Corey Moffet wrote:
> 
> I am having difficulty with plot.formula.
> 
> For example:
> 
> -------------------
> 
> dat <- data.frame(y  =            c(1,1,1,2,2,2,3,3,3,4,4,4),
>                   x1 = as.ordered(c(1,1,1,1,1,1,2,2,2,2,2,2)),
>                   x2 = as.ordered(c(1,1,1,2,2,2,1,1,1,2,2,2)))
> 
> plot(y ~ x1 + x2, data = dat) # Works fine "interactively" asking:
> # "Hit <Return> to see next plot:"
> #  But this causes problems when it is run in a batch file.
> 
> plot(y ~ x1 + x2, data = dat, ask = FALSE) # gives error:
> # "Error in model.frame(formula, rownames, variables, varnames, extras,
> extranames,  :
> #        variable lengths differ"
> 
> -------------------
> 
> I want to be able to generate these figures in a non-interactive batch file.
> 
> Is this the expected behavior?  Is there a work around?


I think it's not expected and a bug. Could you file a bug report,
please?

Workaround:
  plot(y ~ x1 + x2, data = dat, ask = NULL)

Uwe Ligges


> platform i386-pc-mingw32
> arch     i386
> os       mingw32
> system   i386, mingw32
> status
> major    1
> minor    5.1
> year     2002
> month    06
> day      17
> language R
> 
> With best wishes and kind regards I am
> 
> Sincerely,
> 
> Corey A. Moffet
> Support Scientist
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