[Rd] matplot.Date & matplot.POSIXct
Hello, All: Roughly a decade ago, I added "matplot.Date" and "matplot.POSIXct" to the "fda" package, so we could get reasonable labeling of the horizontal axis when "x" was class "Date" or "POSIXct". I also added a local version of "matplot.default" that just changes the defaults for "xlab" and "ylab". Would anyone care to comment on this? In particular, might there be any interest among the R Core Team of adding "matplot.Date" and "matplot.POSIXct" to the "graphics" package? Secondarily, might anyone have any thoughts about the defaults for "xlab" and "ylab" in "graphics::matplot"? I ask, because the Jim Ramsay, Giles Hooker and I are preparing a new release of "fda", and Jim asked me if we needed to to have "matplot" masking "graphics::matplot". Rather than answer that question, I thought I would ask a larger question of this group. Thanks, Spencer Graves __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] How to get an object name from C?
(earlier I sent it as html by mistake).
Hi,
How can I get from C an object name used as a function argument? I
have sample code in C that gives me access to the name of the function
being called:
SEXP xname(SEXP x)
{
const char *fun_name = CHAR(PRINTNAME(CAR(x)));
x = CDR(x);
const char *arg_name = isNull(TAG(x)) ? "" : CHAR(PRINTNAME(TAG(x)));
Rprintf("fn_name: %s, arg_name: %s\n", fun_name, arg_name);
return R_NilValue;
}
> xname <- function(...) invisible(.External("xname", ...))
>
> x1 = 123
>
> xname(x1)
fn_name: xname, var_name:
However, I am trying to find a way to access the object name. In the
documentation I found a solution for named args:
> xname(arg = x1)
fn_name: xname, var_name: arg
And I'd like to find the equivalent in C for substitute():
> substitute(x1)
x1
Best regards,
Daniel
__
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Re: [Rd] How to get an object name from C?
Since substitute() is implemented in C, you could look at its implementation.
On Fri, Jan 24, 2020 at 1:09 AM Daniel Cegiełka
wrote:
>
>
> (earlier I sent it as html by mistake).
>
> Hi,
>
> How can I get from C an object name used as a function argument? I
> have sample code in C that gives me access to the name of the function
> being called:
>
>
> SEXP xname(SEXP x)
> {
> const char *fun_name = CHAR(PRINTNAME(CAR(x)));
> x = CDR(x);
> const char *arg_name = isNull(TAG(x)) ? "" : CHAR(PRINTNAME(TAG(x)));
>
> Rprintf("fn_name: %s, arg_name: %s\n", fun_name, arg_name);
> return R_NilValue;
> }
>
>
> > xname <- function(...) invisible(.External("xname", ...))
> >
> > x1 = 123
> >
> > xname(x1)
> fn_name: xname, var_name:
>
>
> However, I am trying to find a way to access the object name. In the
> documentation I found a solution for named args:
>
>
> > xname(arg = x1)
> fn_name: xname, var_name: arg
>
>
> And I'd like to find the equivalent in C for substitute():
>
> > substitute(x1)
> x1
>
>
> Best regards,
> Daniel
>
> __
> R-devel@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
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Senior Scientist, Bioinformatics and Computational Biology
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