Exemplos de RawVector::attr em C++ (Cpp)

Exemplo n.º 1

Arquivo: bitOps.cpp Projeto: jpabbuehl/ncdfFlow

//[[Rcpp::export]]
Rcpp::LogicalVector toLogical(Rcpp::RawVector bytes) {

	unsigned nBit = bytes.attr("bitlen");
	unsigned nByte = bytes.size();
    Rcpp::LogicalVector ans(nBit);//default are all 0s

    unsigned byteIndex, bitIndex;

    for(unsigned i =0 ; i < nBit; i++) {
        byteIndex = i / 8;
        bitIndex = i % 8;
        if(bytes[byteIndex] & 1 << bitIndex)
        	ans(i) = 1;
    }

    return(ans);
}

Exemplo n.º 2

Arquivo: edit.cpp Projeto: cran/magick

// [[Rcpp::export]]
XPtrImage magick_image_readbitmap_raw(Rcpp::RawVector x){
  Rcpp::IntegerVector dims(x.attr("dim"));
  return magick_image_bitmap(x.begin(), Magick::CharPixel, dims[0], dims[1], dims[2]);
}