MATLAB: How to plot the average plot out of three plots

graph

Hello everyone, i have extracted the data from the excel to plot the graphs .Now , i want to plot the average plot in the same graph .i have three plots in the same graph which each of the three has different 1 column but different rows.i would be grateful if anyone could help me to get the idea of how to plot that graph.Thank you in advance.

Best Answer

You should decide the x-axis same for all the data and make y-values NaN for out of odmain/ extrapolation range and use mean/ nanmean.

Check the dimensions of each data.
Fix the common x-axis data to get the all the data to this x-axes. I would pick the data1, as it covers the more range of x-axes when compared to other data.
Get the data2, data3 to the x-axes domain of data1.
Use interp1 to get the data2, data3 to the x-axes range of data1. The extrapolation points should be set to NaN.
Use nanmean or mean nan flags to get the avarage of data1, data2 and data3.

Related Solutions

MATLAB: How to line graph from different excel sheet once for all sheet

xlfile = 'NNDTV.xlsx';
[~, sheets] = xlsfinfo(xlfile);  %get list of sheets in workbook
X = (1:20)';   %as a column vector for easier plot command
for sh = sheets   %iterate over the sheets
   shname = sh{1};
   value = xlsread(xlfile, shname);  %no need to get txt and DT1 if you don't use them
   figure;
   plot(X, value(:, 1:3));  %if value has only three columns, then simply: plot(X, value);
   xlabel('Time');
   ylabel('Voltage');
   title(sprintf('Sheet %s', shname));
end

MATLAB: Stress strain average unique sample points

If (x,y) are your data points. Use the following to avoid the error.

[x,idx] = unique(x) ; 
y = y(idx) ; 
yi = interp1(x,y,xi) ;

Best Answer

Related Solutions

MATLAB: How to line graph from different excel sheet once for all sheet

MATLAB: Stress strain average unique sample points

Related Question