我正在尝试创建一个 R 包,该包使用 .cpp 脚本中截断法线的随机抽取.我正在使用 pckage RcppTN 中的 rtn1 函数.如果我提供代码,则该功能可以正常工作.构建包后,我收到错误:
I am trying to create a R package that uses random draws from a truncated normal in a .cpp script. I am using the rtn1 function from the pckage RcppTN. If I source the code, the function works fine. Once I build the package I get the error:
> library(testtruncnorm) > testtruncnorm() Error in testtruncnorm::testtruncnorm() : function 'RcppTN_rtn1' not provided by package 'RcppTN'简化的 .cpp 代码在这里
Simplified .cpp code is here
#include <RcppArmadillo.h> // [[Rcpp::depends(RcppArmadillo)]] #include <RcppTN.h> // [[Rcpp::depends(RcppTN)]] #include<armadillo> using namespace Rcpp; //' draw truncated normal //' //' testtruncnorm() //' @return returns 2 draws from a truncated normal // [[Rcpp::export]] arma::vec testtruncnorm() { arma::vec result = arma::ones(2); result[1] = RcppTN::rtn1(1, 1, 0,HUGE_VAL); result[2] = RcppTN::rtn1(1, 1, 0,HUGE_VAL); return result; }我的 NAMESPACE 文件是
My NAMESPACE file is
useDynLib(testtruncnorm, .registration=TRUE) importFrom(Rcpp, evalCpp) exportPattern("^[[:alpha:]]+")我的描述文件是
Package: testtruncnorm Type: Package Title: What the Package Does Using Title Case Version: 1.0 Date: 2018-10-23 Author: Your Name Maintainer: Your Name <your@email> Description: More details about what the package does. See <cran.r-project/doc/manuals/r-release/R-exts.html#The- DESCRIPTION-file> for details on how to write this part. License: GPL (>= 2) Imports: Rcpp (>= 0.12.19), RcppTN LinkingTo: Rcpp, RcppArmadillo, RcppTN我正在使用 RStudio 创建R Package with RcppArmadillo"来开始.RStudio 版本 1.1.456.R 版本 3.5.1.视窗 10.
I am using RStudio create "R Package with RcppArmadillo" to get started. RStudio version 1.1.456. R version 3.5.1. Windows 10.
推荐答案您必须确保 RcppTN 已附加.您可以使用
You have to make sure that RcppTN gets attached. You can do this using
importFrom(RcppTN, rtn)在 NAMESPACE 中.在 RcppTN 的文档中,它说应该添加
in NAMESPACE. In the documentation for RcppTN it says that one should add
Depends: RcppTN应该有同样的效果.
更多推荐
RcppTN .cpp 脚本在来源时有效,但在库中编译时无效
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