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Re: Resampling data with irregular time base [message #15777 is a reply to message #15680]

Tue, 08 June 1999 00:00

Struan Gray
Messages: 178
Registered: December 1995

Senior Member

Karl Krieger, krieger@ipp.mpg.NOSPAM writes:

> I have data with an irregular time base, which I
> would like to resample in a regular spaced time
> base. How can I average over all original data
> points in each interval of the new time vector
> without resorting to a FOR loop?

Use the HISTOGRAM function with the REVERSE_INDICES keyword on your
array of time values. You can use the MAX, MIN and BINSIZE keywords
to define the start, stop and interval times of the new timebase.
Then, for each of those intervals the array returned by
REVERSE_INDICES will tell you the elements of your original data which
lie in that interval, so it's easy to add them up. You can extract the
normalisation divisor from the number of elements pointed to by the
reverse indices array, or from the value of the relevant bin of the
histogram itself.

Struan

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[Message index]

		Re: Resampling data with irregular time base By: Martin Schultz on Mon, 07 June 1999 00:00
		Re: Resampling data with irregular time base By: Richard G. French on Sat, 05 June 1999 00:00
		Re: Resampling data with irregular time base By: Richard G. French on Sat, 05 June 1999 00:00
		Re: Resampling data with irregular time base By: steinhh on Sat, 05 June 1999 00:00
		Re: Resampling data with irregular time base By: Struan Gray on Tue, 08 June 1999 00:00

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