sensitivity during optimisation, with fun argument

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Gavin Seddon 2015-8-4

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评论： Gavin Seddon 2015-10-14

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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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 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 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.