[ncl-talk] wavelet function memory limit for data size 2^16?

[Dennis Shea]

My bad. There is a fixed size limit in the underlying f77 code.

----
C** initialize work arrays
      PARAMETER (nk=65535)
      DOUBLE PRECISION wsave(4*nk+15),kwave(nk)
      DOUBLE COMPLEX yfft(nk),daughter(nk)

------

The 'wsave' is a work array for the FFT (FFTPACK).
I have no idea why this would be limited to this size (65535).

FFTPACK has no limitations on size ... that I am aware of.
------

What size ar your time series?

THX
D

On Fri, Dec 9, 2016 at 2:27 PM, Dennis Shea <shea at ucar.edu> wrote:

> To my knowledge, there is no limit on the number of grid points.
>
> Regards
>
> On Wed, Dec 7, 2016 at 8:38 PM, ivica <ivica.jan at gmail.com> wrote:
>
>> Dear support,
>> trying to analyze big data and seems that wavelet function is having a
>> limit on 2^16 =65536  data points. Can that be larger?
>> I have no problem with my server memory though.
>>
>> Thanks,
>> Ivica
>>
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