sensitivity during optimisation, with fun argument

2015 8 4
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更新时间：2015 10 14
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Hi
when optimising with fminbnd I find that the y value may vary due to experimental sensitivity. On reading I find the 'fun' argument may reduce plot sensitivity. Am I correct and will someone please instruct me on how to accomplish this?
Gavin.

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Torsten
Torsten 2015-8-4
What do you mean by "plot sensitivity" ? What are you trying to plot ?
Best wishes
Torsten.
Gavin Seddon
Gavin Seddon 2015-9-24
Hello, my X data is time and my Y data is structure deviation. Using fminbnd it appears the maximum (using -f) will be infinite and I must define a deviation limit.
Gavin Seddon
Gavin Seddon 2015-10-14
Is it possible rather than to find a optimum point use the function equation by finding its derivative, setting this equal to 0 and solving for X? My problem would now be to define a position on the curve at which Y variations become negligible.

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Gavin Seddon
Gavin Seddon 2015-8-5

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Thank you for your input, during re-reading the manual it appears that 'smoothing' in chapter 2 will accomplish this. My original data has minor fluctuations. Thanks again.
Gavin.

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