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roberto madia

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04 Nov 2009 Level crossings Detect level crossing of signals. Author: roberto madia level crossing method, level crossing, level crossing rate, statistics, data import, data export 72 3
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05 Nov 2009 Level crossings Detect level crossing of signals. Author: roberto madia

 "Traditional" algorithms means algorithms based on sum(diff(sign(Signal-OneLevel))) ~= 0) method.
For large datasets this routine is at least 5 times faster.

In case of consecutive equal values this routines calculates all crossings even tough they are all equals.
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05 Nov 2009 Level crossings Detect level crossing of signals. Author: roberto madia madia, roberto

 "Traditional" algorithms means algorithms based on sum(diff(sign(Signal-OneLevel))) ~= 0) method.
For large datasets this routine is at least 5 times faster.

In case of consecutive equal values this routines calculates all crossings even tough they are all equals.
05 Nov 2009 Level crossings Detect level crossing of signals. Author: roberto madia Jos

Just curious what you mean by "This algorithm is generally faster than traditional ones". What are the traditonal ones?

I would suspect that an operation using something using DIFF and SIGN, as in (not-tested) "sum(diff(sign(Signal-OneLevel))) ~= 0)" is faster (as well as shorter)

05 Nov 2009 Level crossings Detect level crossing of signals. Author: roberto madia Lechner, Martin

This function has problems with consecutive equal values. They are also counted as crossings.

lc_fast([0;1;1;1;1;1;0],1)
ans = 4

I would expect for the example above: 1
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level crossing, data exploration, data export, data import, level crossing method
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04 Nov 2009 Level crossings Detect level crossing of signals. Author: roberto madia level crossing method, level crossing, level crossing rate, statistics, data import, data export 72 3
28 Aug 2007 crossing Detect zero (or any other) level crossing of signals. Author: Steffen Brueckner signal processing, detect zero, level crossing, zero crossing 164 12
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