OK, well, the way I suggested will allow you to modify the C code too --
but reading your question I realize you probably don't want to do this.
If you want to use the definitions of the C functions from stats, you can
skip 2. below and add another modification to the calls to .C in your
def. of bw.SJ; add the argument PACKAGE=stats.
On Tue, 6 Nov 2007, Katharine Mullen wrote:
bw.SJ calls C code from the file
/usr/local/bin/R-2.6.0/src/library/stats/src/bandwidths.c
You have to make this code available.
You can do the following:
1. copy bandwidths.c and the definition of bw.SJ (the latter renamed) to a
directory
2. compile bandwidths.c into a shared library with the command
R CMD SHLIB bandwidths.c (see the manual writing R extensions for details)
3. in your definition of bw.SJ, in the 3 places .C is
called, remove R_ from the first argument and quote it; e.g.,
C(R_band_phi4_bin, ... becomes C(band_phi4_bin,
4. in R, load the shared library you built with the dyn.load function; now
your definition of the (renamed) function bw.SJ can be modified as you
like.
On Tue, 6 Nov 2007, Jason Liao wrote:
I tried to modify the R function bw.SJ (from the stats package) for my
own use. But if I just get the source code and run directly (without any
modification), it can no longer find some key functions called within
it. I understand this has something to do with searching path which I do
not understand well. Can anyone tell me how to modify the source code of
an R function and still make it part of an existing package?
Thanks.
Jason Liao, http://www.geocities.com/jg_liao
Associate Professor of Biostatistics
Drexel University School of Public Health
245 N. 15th Street, Mail Stop 660
Philadelphia, PA 19102-1192
phone 215-762-3934
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