ValueError: On entry to ZGEHD2 parameter number 2 had an illegal value











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I'm using python to solve an eigenvalue problem when this error occurs. The version I'm using is install by anaconda: 3.6.3 |Intel Corporation.



The line where the error occurs is(Corre is the matrix I'm diagonalizing):



[fk, mode] = linalg.eig(Corre)


The message is:




File "/Users/zhanwang/anaconda/envs/intelpy3/lib/python3.6/site-packages/scipy/linalg/decomp.py", line 209, in eig
overwrite_a=overwrite_a)



ValueError: On entry to ZGEHD2 parameter number 2 had an illegal value




This error shows up occasionally only for some matrix (e.g. matrix with dimension 2304 or 6400) but not for matrix with other larger or smaller dimensions.
So I'm wondering what does this message tell me?






python python-3.6 lapack eigenvalue eigenvector







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  • This might or might not be related: github.com/ContinuumIO/anaconda-issues/issues/804, maybe you could try a more recent (or older) version of numpy, to see if it helps.
    – Frederik.L
    21 hours ago















up vote
1
down vote

favorite












I'm using python to solve an eigenvalue problem when this error occurs. The version I'm using is install by anaconda: 3.6.3 |Intel Corporation.



The line where the error occurs is(Corre is the matrix I'm diagonalizing):



[fk, mode] = linalg.eig(Corre)


The message is:




File "/Users/zhanwang/anaconda/envs/intelpy3/lib/python3.6/site-packages/scipy/linalg/decomp.py", line 209, in eig
overwrite_a=overwrite_a)



ValueError: On entry to ZGEHD2 parameter number 2 had an illegal value




This error shows up occasionally only for some matrix (e.g. matrix with dimension 2304 or 6400) but not for matrix with other larger or smaller dimensions.
So I'm wondering what does this message tell me?






python python-3.6 lapack eigenvalue eigenvector







share|improve this question







New contributor




Zhan Wang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.




















  • This might or might not be related: github.com/ContinuumIO/anaconda-issues/issues/804, maybe you could try a more recent (or older) version of numpy, to see if it helps.
    – Frederik.L
    21 hours ago













up vote
1
down vote

favorite









up vote
1
down vote

favorite











I'm using python to solve an eigenvalue problem when this error occurs. The version I'm using is install by anaconda: 3.6.3 |Intel Corporation.



The line where the error occurs is(Corre is the matrix I'm diagonalizing):



[fk, mode] = linalg.eig(Corre)


The message is:




File "/Users/zhanwang/anaconda/envs/intelpy3/lib/python3.6/site-packages/scipy/linalg/decomp.py", line 209, in eig
overwrite_a=overwrite_a)



ValueError: On entry to ZGEHD2 parameter number 2 had an illegal value




This error shows up occasionally only for some matrix (e.g. matrix with dimension 2304 or 6400) but not for matrix with other larger or smaller dimensions.
So I'm wondering what does this message tell me?






python python-3.6 lapack eigenvalue eigenvector







share|improve this question







New contributor




Zhan Wang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











I'm using python to solve an eigenvalue problem when this error occurs. The version I'm using is install by anaconda: 3.6.3 |Intel Corporation.



The line where the error occurs is(Corre is the matrix I'm diagonalizing):



[fk, mode] = linalg.eig(Corre)


The message is:




File "/Users/zhanwang/anaconda/envs/intelpy3/lib/python3.6/site-packages/scipy/linalg/decomp.py", line 209, in eig
overwrite_a=overwrite_a)



ValueError: On entry to ZGEHD2 parameter number 2 had an illegal value




This error shows up occasionally only for some matrix (e.g. matrix with dimension 2304 or 6400) but not for matrix with other larger or smaller dimensions.
So I'm wondering what does this message tell me?






python python-3.6 lapack eigenvalue eigenvector




python python-3.6 lapack eigenvalue eigenvector






share|improve this question







New contributor




Zhan Wang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question







New contributor




Zhan Wang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question






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Zhan Wang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









asked 21 hours ago









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New contributor




Zhan Wang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Zhan Wang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Zhan Wang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












  • This might or might not be related: github.com/ContinuumIO/anaconda-issues/issues/804, maybe you could try a more recent (or older) version of numpy, to see if it helps.
    – Frederik.L
    21 hours ago


















  • This might or might not be related: github.com/ContinuumIO/anaconda-issues/issues/804, maybe you could try a more recent (or older) version of numpy, to see if it helps.
    – Frederik.L
    21 hours ago
















This might or might not be related: github.com/ContinuumIO/anaconda-issues/issues/804, maybe you could try a more recent (or older) version of numpy, to see if it helps.
– Frederik.L
21 hours ago




This might or might not be related: github.com/ContinuumIO/anaconda-issues/issues/804, maybe you could try a more recent (or older) version of numpy, to see if it helps.
– Frederik.L
21 hours ago

















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