Hi Gabor,
--- On Thu, 9/3/09, Gabor Grothendieck <ggrothendi...@gmail.com> wrote:
> I've tried both these approaches.
>
> See Ryacas source code to see an example of the binary
> download approach.
> It has the advantage that the software loads and runs
> faster.
>
> Nevertheless, I moved from the binary download approach to
> the Jython approach
> for my next package, rSymPy, since Jython gives a single
> approach that works
> on all platforms and installation becomes a "no brainer"
> since its all
> self contained.
Unzipping an archive with e.g. "python.exe" and "python25.dll" should also be
quite easy. Python's main modules would all be included in "python25.dll". For
add-on modules you could use a modified import mechanism, so that you can place
these modules one level deeper in the directory structure.
> In fact, in most cases its just a matter of:
> install.packages("rSymPy").
> like any other package.
>
> Thus while its true that Jython is slower but if usrs can't
> install it
> in the first place
> or its too difficult to install it no one will try it in
> the first
> place and then it
> does not matter how fast it is since it will be unused or
> less used.
>
> One caveat is that although Jython does make installation
> much easier
> its still possible to have problems. e.g. user does
> not have
> Java or has wrong version of Java or needs certain
> permissions. On Vista
> they may need to run R elevated.
I can imagine.
> I expect that as new
> versions of Jython
> become available (in fact a more recent one became
> available after the
> last release of rSymPy) things will further improve.
>
> For more info on possible problems with each approach see
> the
> troubleshooting sections of Ryacas and rSymPy home pages:
>
> http://Ryacas.googlecode.com
> http://rSymPy.googlecode.com
Thanks. I will take a look at both projects.
Guido
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