[Rd] Graphics device hook to manipulate plotmath

2011-12-07 Thread Zack Weinberg
Is there a hook that allows a graphics device to apply transformations to plotmath expressions *before* they are rendered? If there isn't one yet, would it be feasible to add one? The motivation for this hook is graphic devices that feed into something that already has support for math layout, su

Re: [Rd] R 2.5.0 refuses to print enough digits to recover exact floating point values

2007-05-28 Thread Zack Weinberg
On 5/23/07, Prof Brian Ripley <[EMAIL PROTECTED]> wrote: [...] > It really is the case that writing out a number to > 15 significant digits > and reading it back in again is not required to give exactly the same > IEC60559 (sic) number, and furthermore there are R platforms for which > this does no

Re: [Rd] R 2.5.0 refuses to print enough digits to recover exact floating point values

2007-05-22 Thread Zack Weinberg
On 5/22/07, Uwe Ligges <[EMAIL PROTECTED]> wrote: > Zack Weinberg wrote: > > > > I'd really appreciate some way of forcing R to print enough digits to > > represent every possible IEEE double value. I would also argue that > > this should be the default

[Rd] R 2.5.0 refuses to print enough digits to recover exact floating point values

2007-05-22 Thread Zack Weinberg
I have noticed that in R 2.5.0, no method of textual output will print a "double" mode quantity with more than 15 digits after the decimal point. From the help page (?print.default) it appears that this is intentional, since digits after the fifteenth may be uncertain. However, fifteen digits afte