Displaying 5 results from an estimated 5 matches for "solveqr".
2016 Apr 20
6
Solving sparse, singular systems of equations
...sparse=TRUE,tol=.Machine$double.eps)
#one x that happens to solve Ax = bx = matrix(c(-10,10,0),nrow=3,ncol=1)A %*% x
#Error in lsfit(A, b) : only 3 cases, but 4 variableslsfit(A,b)#solves the system, but fails belowsolve(qr(A, LAPACK=TRUE),b)#Error in qr.solve(A, b) : singular matrix 'a' in solveqr.solve(A,b)
#matrices used in my actual problem (see attached files)A = readMM("A.txt")b = readMM("b.txt")
#Error in as(x, "matrix")[i, , drop = drop] : subscript out of boundssolve(qr(A, LAPACK=TRUE),b)
-------------- next part --------------
An embedded and chars...
2016 Apr 20
0
Solving sparse, singular systems of equations
...E,tol=.Machine$double.eps)
> #one x that happens to solve Ax = bx = matrix(c(-10,10,0),nrow=3,ncol=1)A %*% x
> #Error in lsfit(A, b) : only 3 cases, but 4 variableslsfit(A,b)#solves the system, but fails 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)
Your code is a mess.
A singular square system of line...
2016 Apr 20
0
Solving sparse, singular systems of equations
...double.eps)
> #one x that happens to solve Ax = bx = matrix(c(-10,10,0),nrow=3,ncol=1)A
> %*% x
> #Error in lsfit(A, b) : only 3 cases, but 4 variableslsfit(A,b)#solves the
> system, but fails 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)
>
>
> _______________________________...
2016 Apr 20
0
Solving sparse, singular systems of equations
...hine$double.eps)
>#one x that happens to solve Ax = bx =
>matrix(c(-10,10,0),nrow=3,ncol=1)A %*% x
>#Error in lsfit(A, b) : only 3 cases, but 4 variableslsfit(A,b)#solves
>the system, but fails belowsolve(qr(A, LAPACK=TRUE),b)#Error in
>qr.solve(A, b) : singular matrix 'a' in solveqr.solve(A,b)
>#matrices used in my actual problem (see attached files)A =
>readMM("A.txt")b = readMM("b.txt")
>#Error in as(x, "matrix")[i, , drop = drop] : subscript out of
>boundssolve(qr(A, LAPACK=TRUE),b)
>
>
>
>----------------------------...
2016 Apr 20
1
Solving sparse, singular systems of equations
...E,tol=.Machine$double.eps)
> #one x that happens to solve Ax = bx = matrix(c(-10,10,0),nrow=3,ncol=1)A %*% x
> #Error in lsfit(A, b) : only 3 cases, but 4 variableslsfit(A,b)#solves the system, but fails 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)
Your code is a mess.
A singular square system of line...