From: Armin Mueller <>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Make function injective
Date: Mon, 22 Nov 2010 21:14:51 +0100
Organization: University of Karlsruhe, Germany
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Roger Stafford wrote:

> Why not do a sort with the decreasing option on 'curve'? If its
> deviation from non-increasing monotonicity is due only to small noise
> effects, the swapping of 'curve' values due to the sorting would all
> occur in local regions  [...]

Dear Roger,

your idea sounds most interesting! I have to try it with my data. Data 
rate is low, there are only about 20 to 30 samples. If there is a spike, 
swapping two values could possibly interfere more than just ignoring the 

> This does not necessarily produce a strictly decreasing result. [...]