undefined function or variable "helperMRAPlot"

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Tim Darrah
Tim Darrah 2020-7-7
评论： Janardhan Rao Moparthi 2022-12-14
I am following this guide, https://www.mathworks.com/help/wavelet/examples/practical-introduction-to-multiresolution-analysis.html and get an error when calling "helperMRAPlot". I have matlab R2019b.
[SL: Removed comma from the end of the URL]
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PEDRO LUIS ZERPA AVENDAÑO
PEDRO LUIS ZERPA AVENDAÑO 2021-9-6
Hello.
I tested on the R2020a version and it doesn't run the helperMRAPlot function either.
Could someone guide me on an option to graph the result of the EMD analysis?
Thanks.

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回答（2 个）

Steven Lord
Steven Lord 2020-7-8
According to the Release Notes this example was introduced in release R2020a of Wavelet Toolbox. I believe that helper function was introduced as part of that example and so will not be present in older releases.
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Patricia Spellman
Patricia Spellman 2020-7-23
Would it be possible to get the code so those of us stuck with 2019b can see what functions are called to produce the graphs?
Thanks

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Janardhan Rao Moparthi
just try the following steps:
  1. click on the link https://in.mathworks.com/help/wavelet/ug/practical-introduction-to-multiresolution-analysis.html then open the example in matlab online.
  2. replace the function helperMRAPlot.m on your matlab with the lines given in helperMRAPlot.m of matlab online.
  3. run the original code. (It is working)
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Janardhan Rao Moparthi
Janardhan Rao Moparthi 2022-12-14
i have run this code in matlab R2021b ....by replacing the set of command lines in helperMRAPlot.m available in matlab online

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