Thanks for the fast replies. There was a bug in
Matrix::rankMatrix(matrix(0)) which returned 1 (fixed by Martin Maechler
in the development version of Matrix) and I thought here is an issue
here too. Sorry for asking too quickly...
Best,
Bernd
Am 22.06.2017 um 21:41 schrieb Iñaki Úcar:
2017-
2017-06-22 20:31 GMT+02:00 Uwe Ligges :
>
>
> On 22.06.2017 20:09, Iñaki Úcar wrote:
>>
>> 2017-06-22 19:49 GMT+02:00 Uwe Ligges :
>>>
>>> On 22.06.2017 17:11, Bernd Funovits wrote:
Hello,
I experienced some unexpected behaviour while determining the rank of
matrices (
On 22.06.2017 20:09, Iñaki Úcar wrote:
2017-06-22 19:49 GMT+02:00 Uwe Ligges :
On 22.06.2017 17:11, Bernd Funovits wrote:
Hello,
I experienced some unexpected behaviour while determining the rank of matrices
(sometimes 1x1 matrices):
base::qr(matrix(1e-20))$rank returns 1 (incorrect)
base:
2017-06-22 19:49 GMT+02:00 Uwe Ligges :
> On 22.06.2017 17:11, Bernd Funovits wrote:
>>
>> Hello,
>>
>> I experienced some unexpected behaviour while determining the rank of
>> matrices (sometimes 1x1 matrices):
>> base::qr(matrix(1e-20))$rank returns 1 (incorrect)
>> base::qr(diag(c(1, 1e-20)))$r
On 22.06.2017 17:11, Bernd Funovits wrote:
Hello,
I experienced some unexpected behaviour while determining the rank of
matrices (sometimes 1x1 matrices):
base::qr(matrix(1e-20))$rank returns 1 (incorrect)
base::qr(diag(c(1, 1e-20)))$rank returns 2 (incorrect)
Why do you believe this is in
Hello,
I experienced some unexpected behaviour while determining the rank of
matrices (sometimes 1x1 matrices):
base::qr(matrix(1e-20))$rank returns 1 (incorrect)
base::qr(diag(c(1, 1e-20)))$rank returns 2 (incorrect)
Best regards,
Bernd
> R.version
_
platform x86_64-w64-
