Skip to content

Add row method to array #313

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
2039 wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Add row method to array #313

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
29 changes: 25 additions & 4 deletions TMB/inst/include/tmbutils/array.hpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -201,6 +201,31 @@ struct array:Map< Array<Type,Dynamic,1> >{
return array(p,newdim);
}

/** \brief Extract sub-array with write access
Index i refers to the inner-most (i.e. first) dimension.
*/
array<Type> row(int i){
int nsize = this->MapBase::size()/this->rows();
int nslice = this->rows();

vector<int> newdim;
if(dim.size() > 1){
newdim = dim.tail(dim.size()-1);
} else {
newdim.resize(1);
newdim << 1;
}

vector<Type> x(nsize);
array<Type> ans(x, newdim); /* Create new array with nsize dimension */

for(int j=0; j < ans.size(); j++){ /* Loop through values of old array */
ans[j] = (*this)[j*nslice + i];
}

return ans;
}

/** \brief Elementwise subsetting 1D array.
Also allowed in general to access the underlying vector of n-dim array. */
Type& operator()(int i1){
Expand Down Expand Up @@ -305,9 +330,5 @@ struct array:Map< Array<Type,Dynamic,1> >{

/** \brief Convert TMB array to vector */
tmbutils::vector<Type> vec() { return *this; }

/* Methods this class should *not* inherit (generate compile time error if used) */
private:
using MapBase::row;
};