Re: [R] path and R CMD check

From: Christophe Genolini <>
Date: Fri, 25 Jul 2008 05:34:39 -0700 (PDT)

Uwe Ligges-3 wrote:
> Christophe Genolini wrote:

>> Hi the list,
>> When I developpe my code, I put the file that define all the functions 
>> in ./MyPack/R/prog.R and the tests in ./MyPack/tests/testsProg.R
>> The test files start by
>> load("../data/myData.rda")
>> source("../R/prog.R")
>> #test function number one...
>> But "R CMD check MyPack" does not find the file myData.rda.
>> Does someone knows what is wrong ?

> Read Writing R Extensions, learn how a package works (and yes, it works
> without sourcing files separately since the package mechanism does the
> job for you) and just say:
> library("packagename")
> data("myData")
> Best wishes,
> Uwe Ligges
I try but I find it very hard. Do you have more precision about the part that explain it ? I read it several time, but I did not find that much on tests.

So I do it on my own way. But I would love to know more about the way used by real programmer.

So far :

Before today, I was starting by
> load("../data/myData.rda")
> source("../R/prog.R")

But you tell me to do :
> library("myPack")
> data("myData")

Using this system is problematic during the development phase, since the package is not ready and library(myPack) will not work

Any advice for a better way of working ?


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Received on Fri 25 Jul 2008 - 12:37:26 GMT

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