Dear Rcpp-List,
I am looking to see it is possible to fill in a matrix with another matrix.
I have three matrices, out1 which is a 5x5 zero matrix
out2 is a 3x3 matrix with each value set as 8
and out3 which is a 5x4 matrix with each value set as 9
I would like to change part of my out1 matrix by filling it with the values in
out2 or out3, is this possible?
Would I just need to use loops to sequentially fill it in (either row by row or
column by column etc)? or could I just assign new values to the bits i want to
change?
Below is my attempt at doing the later, but it does not compile saying that for
this line "out1(Range(0,2),Range(1,3)) = out2;” there is no viable overload ‘='
Perhaps this is rather simple but I am very new to Rcpp, but any help would be
much appreciated.
Regards
HLM
#include <Rcpp.h>
using namespace Rcpp;
// [[Rcpp::export]]
Rcpp::NumericMatrix f1(String h){
String h1 = h;
NumericMatrix out1(5,5);
NumericMatrix out2(3,3);
NumericMatrix out3(5,4);
std::fill(out2.begin(), out2.end(), 8);
std::fill(out3.begin(), out2.end(), 9);
if(h1=="nc"){
out1(Range(0,2),Range(1,3)) = out2;
} else {
out1(_,Range(1,4)) = out3;
}
return out1;
}
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