hist() error when prob=NULL (PR#7682)
According to the help page, freq and prob are logical, so this is
correctly an error.
What it actually does is
freq <- if (!missing(probability)) !as.logical(probability)
which is consistent with the documentation.
On Thu, 10 Feb 2005 tomhopper@comcast.net wrote:
Full_Name: Tom Hopper Version: 2.0.1 OS: Windows 2000 Submission from: (NULL) (69.220.229.2) While attempting to wrap hist() in my own custom function (for formatting purposes), I notice that a call like
> hist(x, prob=NULL)
produces the output:
Error in if (freq) x$counts else { : argument is of length zero
Switching to use freq does not produce an error, even when freq = NULL.
It appears that hist() is checking for the condition
!missing(prob)
but needs to add a check for a NULL value
&& !is.null(prob)
Brian D. Ripley, ripley@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595