[SciPy-user] phase wrapping algorithm
ryanlists at gmail.com
Tue Oct 10 13:43:31 CDT 2006
I looked in scipy.signal and when I didn't see, I just assumed it didn't exist.
I was just starting to make good progess on my FORTRAN version too.....
I may need to revisit this when I need more control over messy
experimental data. Is there a tricky in-place way to calculate the
difference between a vector and itself shift by 1 or more elements?
On 10/10/06, Travis Oliphant <oliphant.travis at ieee.org> wrote:
> Ryan Krauss wrote:
> > I am rethinking an algorithm for unwrapping phase data from arctan2
> > for a vector of complex numbers (coming from lti models of feedback
> > control systems). I had written something a while ago using weave,
> > but my old code causes seg faults with a recent scipy update. So, I
> > am rethinking the algorithm.
> There is already a phase unwrapping algorithm in NumPy for 1-d data
> called unwrap.
> numpy.unwrap(b) seems to work fine on the second column of the data you
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