[Numpy-discussion] effectively computing variograms with numpy
klemm at phys.ethz.ch
Mon Jun 25 17:09:02 EDT 2007
I will try and dig a bit more in the literature, maybe I find something.
On Jun 25, 2007, at 4:59 PM, Timothy Hochberg wrote:
> On 6/25/07, Hanno Klemm < klemm at phys.ethz.ch> wrote:
>> Thank you very much, the code does what's it expected to do.
>> Unfortunately the thing is still pretty slow on large data sets.
> This does seem like the kind of thing that there should be a faster
> way to compute, particularly since you are binning the results up. One
> approach would be to just bin the data before doing the computation,
> however, that loses a lot of accuracy. It does seem like there should
> be some moment-like approach that would allow you to bin the data
> before you do the computation, computing the first and second moments,
> or something similar and then computing the results from the binned
> moments. I don't know that that would work -- it's just a vague hunch.
> I don't know if I'll have time to try it out, but I thought I would
> mention it.
> Your welcome, I hope this helps some.
> . __
> . |-\
> . tim.hochberg at ieee.org
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