error message about "eigs" function
2 ビュー (過去 30 日間)
古いコメントを表示
I use function eigs(A,1,'sm') in my code, and when I run it, sometimes there is the error message saying "Error using eigs (line 254) Error with ARPACK routine dnaupd: info = -9". What does that mean? Thanks!
The matrix A is a real symmetric matrix in my code, though sometimes it might be singular.
0 件のコメント
回答 (1 件)
Walter Roberson
2012 年 2 月 3 日
c INFO Integer. (INPUT/OUTPUT)
c Error flag on output.
c = -9: Starting vector is zero.
This could occur if you supplied an options structure to eigs() and the v0 (starting column vector) field was all zero.
2 件のコメント
Walter Roberson
2012 年 2 月 3 日
No, the v0 field is a structure field named v0.
If you look at the possible syntaxes for eigs(), it lists,
eigs(A,K,sigma,opts)
eigs(A,B,k,sigma,opts)
In those situations, opts is a structure, and the v0 field would be a field in that structure.
参考
カテゴリ
Help Center および File Exchange で Operating on Diagonal Matrices についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!