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ak114224
Austria
1 Posts |
 Posted - 04/12/2016 : 09:33:41 AM
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| I have monotonic x data and nonmonotonic (definitely rising, but with noise) y data. I want to reduce it according to a set y increment. I have 1000 data points rising from 1,4 to 3,4 and want only data points with 0,05 increment in between. When I try to divert the reduce by x increment function I am blocked, since the data is not monotonic. To explain further what I want to do. If that is not quite possible I would like to fit the data via something like isotonic regression: https://en.wikipedia.org/wiki/Isotonic_regression#/media/File:Isotonic_regression.svg |
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KenLefebvre
USA
66 Posts |
Posted - 04/12/2016 : 10:33:33 AM
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Hi Paul-
Could you clarify a few things? Firstly, when you say you only want data points with an increment "0,05" between, do you mean to say you want only those points whose y values (|y2|-|y1| are >= 0.05)? I'm not entirely sure what your notation 0,05 means in this context.
If you wouldn't mind sharing some data, we'd be glad to try to attempt do this from our end, you can always email us an OPJ or some raw data at tech AT originlab.com
With thanks,
Ken Lefebvre
Technical Service Engineer
OriginLab |
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Make nonmononotinic y data monotonic and reduce it