Dear List,
I am writing a formula method for a function in a package I maintain. I
want the method to return a data.frame that potentially only contains
some of the variables in 'data', as specified by the formula.
The problem I am having is in writing the function and wrapping it
around model.fr
On Sat, Aug 8, 2009 at 10:39 AM, Prof. John C Nash wrote:
> I would urge inclusion in the documentation of the +0, -0 example(s) if
> there is NOT a way in R to distinguish these. There are occasions where it
For single numbers try this:
x <- +0
y <- -0
identical(x, y) && identical(1/x, 1/y) # FA
I'll save space and not include previous messages.
My 2 cents: At the very least the documentation needs a fix. If it is
easy to do, then Ted Harding's suggestion of a switch (default OFF) to
check for sign difference would be sensible.
I would urge inclusion in the documentation of the +0, -
> "DM" == Duncan Murdoch
> on Fri, 07 Aug 2009 12:55:50 -0400 writes:
DM> On 8/7/2009 11:41 AM, Martin Maechler wrote:
>>> "DM" == Duncan Murdoch
>>> on Fri, 07 Aug 2009 11:25:11 -0400 writes:
>>
DM> On 8/7/2009 10:46 AM, Martin Maechler wrote:
>> >>>
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Hi
Hi Jeff,
As mentioned in my message, I *did* replicate on another platform.
One platform was running linux in a VM, the other running MacOSX, on two
different physical machines. The problem did not replicate on a PowerPC
box, so if it is a bug with intel chips, I think it's also appropriate t
