Monthly Archives: March 2013

Overlapping Histogram in R

March 1, 2013
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Overlapping Histogram in R

While preparing a class exercise involving the use of overlaying of histogram, I searched Google on possible article or discussion on the said topic. Luckily, I found a blog where the author demonstrated an R function to create an overlapping histogram...

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Using Rcpp with Boost.Regex for regular expression

March 1, 2013
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Using Rcpp with Boost.Regex for regular expression

Gabor asked about Rcpp use with regular expression libraries. This post shows a very simple example, based onone of the Boost.RegEx examples. We need to set linker options. This can be as simple as Sys.setenv("PKG_LIBS"="-lboost_regex") With that, the following example can be built: // cf www.boost.org/doc/libs/1_53_0/libs/regex/example/snippets/credit_card_example.cpp #include <Rcpp.h> #include <string> #include <boost/regex.hpp> bool validate_card_format(const std::string& s) { static const boost::regex e("(\\d{4}){3}\\d{4}"); ...

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Using Rcpp with Boost.Regex for regular expression

March 1, 2013
By
Using Rcpp with Boost.Regex for regular expression

Gabor asked about Rcpp use with regular expression libraries. This post shows a very simple example, based onone of the Boost.RegEx examples. We need to set linker options. This can be as simple as Sys.setenv("PKG_LIBS"="-lboost_regex") With that, the following example can be built: // cf www.boost.org/doc/libs/1_53_0/libs/regex/example/snippets/credit_card_example.cpp #include <Rcpp.h> #include <string> #include <boost/regex.hpp> bool validate_card_format(const std::string& s) { static const boost::regex e("(\\d{4}){3}\\d{4}"); ...

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