Sounds like an Rcpp question and should be asked on the Rcpp mailing list
http://lists.r-forge.r-project.org/mailman/listinfo/rcpp-devel
Sorry for the run-around!
Martin
On 09/05/2018 02:17 PM, André Luiz Molan wrote:
Hi,
I'm trying to create an R package using Rcpp. I am using the "Build" option
from RStudio and roxygen2 package. My package is build with no error
messages and normally loaded. However, when I call a function from the new
package, I have the following message:
*Error in .Call(<pointer: (nil)>, val1) :
NULL value passed as symbol address
Called from: MakeSquare(x = val)*
This is just a simple function I have created for testing:
cppFunction('double MakeSquare(double x){
double result = 0;
result = x*x;
return result;
}')
The Rcpp function I have created above is called by another function:
CalcSquare <- function(val1,val2){
valResult <- (val1 + val2)/2
valSquare <- MakeSquare(x = valResult)
return(valSquare)
}
I have imported all the necessary packages, including Rcpp. I have looked
at different discussion forums by I did not find any solution.
I sincerely hope you could help me.
Best regards,
André
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