[R] several functions in one *.R file in a R package

[Duncan Murdoch]

On 11-09-06 10:26 AM, Jannis wrote:
> Dear list members,
>
>
> i have build a package which contains a collection of my frequently used functions. To keep the code organized I have broken down some rather extensive and long functions into individual steps and bundled these steps in sub-functions that are called inside the main function.
>
> To keep an overview over which sub-function belongs to which main function I saved all the respective sub-functions to the same *.R file as their main-function and gave them names beginning with . to somehow hide the sub-functions. The result would be one *.R file in<package>/R for each 'main-function' containing something like:
>
>
> mainfunction<- function() {
>    .subfunction1()
>    .subfunction2()
>    #...
> }
>
> .subfunction1()<- function() {
>   #do some stuff
> }
> .subfunction2()<- function() {
>   #do some more stuff
> }
>
>
> According to the way I understood the "Writing R Extensions" Manual I expected this to work. When I load the package, however, I get the error message that the sub-functions could not be found. Manually sourcing all files in the<package>/R directory however yields the expected functionality.
>
> In what way am I mistaken here? Any ideas?

Those definitions of .subfunction1 and .subfunction2 are not 
syntactically correct:  extra parens.  If that's just a typo in the 
message, then you'll have to show us real code.  What you describe 
should work.

Duncan Murdoch