Computing mean of each step in measurement data

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Nahashon O 2020-6-17

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评论： Nahashon O 2020-6-18

measurement_data.mat

Hi everyone,

I have measurement data ‘measurement_data.mat’. I would like to compute the mean at each step where the value is not changing by a huge value. By eyeballing the plot of the data for the first column, it can be seen there are 125 steps. After computing the mean at each step I would like the data to finally be a matrix of 125x4 from being a matrix of 17850x4.

I have tried taking the mean of every n elements to get a meaningful result but it hasn't worked. The step size is not consistent all through.

Any kind of help or suggestion will be appreciated.

Thanks in Advance.

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Nahashon O 2020-6-18

Thanks, Let me check these out.

Nahashon O 2020-6-18

Do you have a simple implementation on how to average the blocks where data is changing slowly as you've suggested in the second statement. I will be greatful for a snippet of code on how to implement this.

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Answer 1

Image Analyst 2020-6-18

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Try movmedian() where the window width is the width of your step width. The median filter removes noise while keeping edges sharp.

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Nahashon O 2020-6-18

Hi Image Analyst,

I have used movemedian and yes it has removed the noise while keeping the edges sharp.

Now getting the value of each step so that I finally have 125 elements in the column is giving me some trouble. I will appreciate any ideas you through my way. Thanks

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