Displaying 5 results from an estimated 5 matches for "boundssolve".
2016 Apr 20
6
Solving sparse, singular systems of equations
...ls belowsolve(qr(A, LAPACK=TRUE),b)#Error in qr.solve(A, b) : singular matrix 'a' in solveqr.solve(A,b)
#matrices used in my actual problem (see attached files)A = readMM("A.txt")b = readMM("b.txt")
#Error in as(x, "matrix")[i, , drop = drop] : subscript out of boundssolve(qr(A, LAPACK=TRUE),b)
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2016 Apr 20
0
Solving sparse, singular systems of equations
...lve(qr(A, LAPACK=TRUE),b)#Error in qr.solve(A, b) : singular matrix 'a' in solveqr.solve(A,b)
> #matrices used in my actual problem (see attached files)A = readMM("A.txt")b = readMM("b.txt")
> #Error in as(x, "matrix")[i, , drop = drop] : subscript out of boundssolve(qr(A, LAPACK=TRUE),b)
Your code is a mess.
A singular square system of linear equations has an infinity of solutions if a solution exists at all.
How that works you can find here: https://en.wikipedia.org/wiki/System_of_linear_equations
in the section "Matrix solutions".
For your simp...
2016 Apr 20
0
Solving sparse, singular systems of equations
...K=TRUE),b)#Error in qr.solve(A, b)
> : singular matrix 'a' in solveqr.solve(A,b)
> #matrices used in my actual problem (see attached files)A =
> readMM("A.txt")b = readMM("b.txt")
> #Error in as(x, "matrix")[i, , drop = drop] : subscript out of
> boundssolve(qr(A, LAPACK=TRUE),b)
>
>
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>...
2016 Apr 20
0
Solving sparse, singular systems of equations
...LAPACK=TRUE),b)#Error in
>qr.solve(A, b) : singular matrix 'a' in solveqr.solve(A,b)
>#matrices used in my actual problem (see attached files)A =
>readMM("A.txt")b = readMM("b.txt")
>#Error in as(x, "matrix")[i, , drop = drop] : subscript out of
>boundssolve(qr(A, LAPACK=TRUE),b)
>
>
>
>------------------------------------------------------------------------
>
>______________________________________________
>R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>https://stat.ethz.ch/mailman/listinfo/r-help
>...
2016 Apr 20
1
Solving sparse, singular systems of equations
...lve(qr(A, LAPACK=TRUE),b)#Error in qr.solve(A, b) : singular matrix 'a' in solveqr.solve(A,b)
> #matrices used in my actual problem (see attached files)A = readMM("A.txt")b = readMM("b.txt")
> #Error in as(x, "matrix")[i, , drop = drop] : subscript out of boundssolve(qr(A, LAPACK=TRUE),b)
Your code is a mess.
A singular square system of linear equations has an infinity of solutions if a solution exists at all.
How that works you can find here: https://en.wikipedia.org/wiki/System_of_linear_equations
in the section "Matrix solutions".
For your simp...