How to find the waveform average from multiple waveforms?

Question

Jefferson Noble Antony 2020-9-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/591553-how-to-find-the-waveform-average-from-multiple-waveforms

评论： Ameer Hamza 2020-9-10

I have plotted a wavefrom using excel file(i have shown it below). I have 7 other similar graphs like this. I need to find the waveform average of the this 8 graphs. The length of these graphs also different.

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Jefferson Noble Antony 2020-9-10

No, they are not in same length and they are in separate excel files if plotted they'll give similar graph. Sry, Im not allowed to share the file.

Ameer Hamza 2020-9-10

Do they have the same range on the x-axis?

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Answer 1

Xavier 2020-9-10

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/591553-how-to-find-the-waveform-average-from-multiple-waveforms#answer_492511

在 MATLAB Online 中打开

Potentially something like this

data1 = randperm(randi([10 20]))'; %readmatrix('dataset1.csv');
data2 = randperm(randi([10 20]))'; %readmatrix('dataset2.csv');
data3 = randperm(randi([10 20]))'; %readmatrix('dataset3.csv');
data4 = randperm(randi([10 20]))'; %readmatrix('dataset4.csv');
data5 = randperm(randi([10 20]))'; %readmatrix('dataset5.csv');
data6 = randperm(randi([10 20]))'; %readmatrix('dataset6.csv');
data7 = randperm(randi([10 20]))'; %readmatrix('dataset7.csv');
max_num_datapoints = max([numel(data1),...
    numel(data2),...
    numel(data3),...
    numel(data4),...
    numel(data5),...
    numel(data6),...
    numel(data7)]);
alldata = zeros(max_num_datapoints, 7);
alldata(1:numel(data1), 1) = data1;
alldata(1:numel(data2), 2) = data2;
alldata(1:numel(data3), 3) = data3;
alldata(1:numel(data4), 4) = data4;
alldata(1:numel(data5), 5) = data5;
alldata(1:numel(data6), 6) = data6;
alldata(1:numel(data7), 7) = data7;
avgd = sum(alldata', "omitnan")' ./ (2-sum(isnan(alldata)')');