numerical differentiation of data

This is a discussion on numerical differentiation of data within the C Programming forums, part of the General Programming Boards category; Hi there, I'm currently working on a program that takes a set of data and smooths it using an n-point ...

  1. #1
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    numerical differentiation of data

    Hi there,

    I'm currently working on a program that takes a set of data and smooths it using an n-point running average, with mirrored end points. I then need the program to differentiate the smoothed data to produce the final output.

    It is this last part of the program that is causing me problems. I was wondering whether anyone knows of any methods for doing this, and could point me in the right direction?

    Many thanks,
    lordbubonicus

  2. #2
    Registered User ssharish2005's Avatar
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    It would be more helpful if you could post of snap of your code, so that we could see where u are going wrong. And i am not sure of whatu mean by "smooths".

    ssharish

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    I don't really have any code for the differentiation at the moment, I'm just looking for starting points. Hence why I didn't post any.

    When I say smooths, I mean that it tries to remove some of the extremes of the data by averaging it out, i.e. it gets rid of some the more extreme maxima and minima from the data. Here's an example - think of a spectrum with several sharp peaks in it. The program broadens and lowers the peaks basically.

  4. #4
    The superhaterodyne twomers's Avatar
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    >> And i am not sure of whatu mean by "smooths".
    He's talking about a running average filter. So he smooths out what he doesn't need.

    What are you having problems with? Post attempts (Not blank ones), and we'll give you a hand.

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