[Rd] Problem with accessing internal variable in package.

[Vladimir Eremeev]

I am writing a package, which contains several functions and variables. 
The variables are for internal use by functions. 
Functions are ment to be callable by a user.
However, the function cannot access these variables.

The package contains only R code, and was created using package.skeleton

package.skeleton(name="ac9",
                 list=c(ls(pattern="(AB2)|(ac9)"),
                        "Chl","Pro","LP","SP","syn","unk","Y","Nh",
                        "plot.C","read.AC9.data","EstimC","plot.AC9"),
                  namespace=TRUE,force=TRUE)

Among others, the package contains the functions EstimC, AB2C, AB2C.S, and
AB2C.HK, and variables ac9nw, ac9wl, ac9aw, ...
Functions use these variables for calculations, and I would like to hide
them from users.

The file NAMESPACE contains the single line:
  export(AB2C.HK,AB2C,AB2C.S,EstimC,plot.C,read.AC9.data,plot.AC9)

I am getting the following error:
Error in AB2C(a, b, model.type) : object "ac9nw" not found

> traceback()
2: AB2C(a, b, model.type)
1: EstimC(i, plot.base.name = paste(plt.base.name, "S_", sep = ""), 
       model.type = "S")

> sessionInfo()
R version 2.5.0 Patched (2007-05-13 r41549) 
i386-pc-mingw32 

locale:
LC_COLLATE=Russian_Russia.1251;LC_CTYPE=Russian_Russia.1251;LC_MONETARY=Russian_Russia.1251;LC_NUMERIC=C;LC_TIME=Russian_Russia.1251

attached base packages:
[1] "datasets"  "utils"     "stats"     "graphics"  "grDevices" "methods"  
[7] "base"     

other attached packages:
         ac9 xlsReadWrite       matlab         MASS 
       "0.1"      "1.3.2"      "0.8-1"     "7.2-33" 


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