Re: [Rd] tests Rin and Rout

From: <cgenolin_at_u-paris10.fr>
Date: Mon, 31 Mar 2008 10:58:33 +0200

Martin Maechler <maechler_at_stat.math.ethz.ch> a écrit :

>>>>>> "CG" == Christophe Genolini <cgenolin@u-paris10.fr>
>>>>>> on Mon, 31 Mar 2008 00:31:55 +0200 writes:
>
> >>
> >> Generally I find it's good to look at examples that work.
> >> For examples of packages using tests, look at source
> >> packages on CRAN. Run the tests on them (using R CMD
> >> check), and see what gets produced.
> >>
> CG> Do you have the name of a package that use it ? I try
> CG> the 10 first package, and 10 other at random, but none
> CG> of them use tests...
>
> hmm, I see 219 out 1378 CRAN packages having a 'tests'
> subdirectory, so it seems you have been a bit unlucky. ;-)

Do you imply that I say I try and I did not ? Well, lets check that :

P_unluck_1 <- 1-(219/1379)
(P_unluck_10 <- P_unluck_1^10)
[1] 0.1773933

So P>0.05, once can not say that I am not a liar. Further investigation are needed :-)

> Isn't all this is explained nicely in the "Writing R Extensions" Manual?

NO ! There is 8 lines on it, and the structure of the Rin and Rout is not given. The writing R Ext. say "the Test code can be in .R or in .Rin" but I do not know what "test code" is suppose to be. I try simple things like some function with argument, but it does not works. I try more complicated things, I did not manage to find the right things to do.

It also say ".Rin file containing code which in turn in .R", but there is also no information about the what the .Rin should be. May be it is obvious for some people, but not for me.

> Or are there sections we should expand ?

I do not know, if there is only few people using it, may be it is not worth. I guess you have so many other thinks to do... On the other hand, if some tool are to difficult to understand, it is normal that people do not use them... I don't know.

I will work on package example that Pr Ripley point to me. Then when I will have understand the way it works, would you like me to add little paragraph in "Writing R extention" ? I mean, not an paragraph by expert but a paragraph by a regular medium level user for some other regular medium level user.

> For answering your subsequent questions, you should probably
> both look at an example package *and* read the 'Writing R
> Extensions' manual a bit more "closely".

Well, I try to not disturb people for little obvious thinks. I can tell you I did work hard before asking, specialy before asking on r-devel...

Christophe



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