WebJan 8, 2013 · Rcpp vector is 0 2.5 5 7.5 10 M <-matrix (seq (1.0, 16.0, by = 1.0), 4, 4) useOperatorOnMatrix (M) Rcpp matrix is 1 5 9 13 2 6 10 14 3 7 11 15 4 8 12 16 tags: basics Tweet Related Articles. Extending R with C++ and Fortran — … WebDec 10, 2012 · So: IntegerVector -> int: stored as the smallest integer. CharacterVector -> String: the string “NA”. LogicalVector -> bool: TRUE. To work with missing values in logical vectors, use an int instead of a bool. NumericVector -> double: stored as an NaN, and preserved. Most numerical operations will behave as you expect, but as discussed below ...
Using RcppParallel to aggregate to a vector - Rcpp Gallery
WebJan 31, 2013 · Sorting Numeric Vectors in C++ and R. Consider the problem to sort all elements of the given vector in ascending order. We can simply use the function std::sort from the C++ STL. Consider the problem of sorting the first n elements of a given vector. The function std::partial_sort from the C++ STL does just this. WebJul 19, 2024 · Pre-requisite: Vectors in C++. Slicing a vector means to make a subvector from a given vector. Given N integers in a vector arr and to positive numbers X and Y, the task is to slice the given vector from index X to Y in a given vector. Examples: Input: vector arr = { 1, 3, 4, 2, 4, 2, 1 }, X = 2, Y = 5. Output: 4 2 4 2. dark red veins in throat
ODRF: Oblique Decision Random Forest for Classification and …
WebAug 25, 2024 · I'm learning Rcpp.In this example, I'm attempting to roll my own cummin() function like base R's cummin(), except I'd like my version to have a na.rm argument. This … WebFeb 23, 2015 · As hinted in the comment, you could use . Grp1 = clone(Grp2) ; but this will create a new R object that then get assigned to Grp1, so you pay for some memory … WebRcppGSL: Rcpp Integration for GNU GSL Vectors and Matrices. This package uses Rcpp to connect the R system to the GNU GSL, a collection of numerical routines for scientific computing, particularly its vector and matrix classes. Examples Faster lm() for OLS regression. The fastLm() function included as file src/fastLm.cpp in the package: bishopp\u0027s appliances columbus in