Statistical calculation from the plot function

I created a plot function in an App:

like this

plot(app.UIAxes,app.Time,app.Tempreture_In,app.Time,app.Tempreture_out)

I would like to do statistical clculation like (Mean, root mean...etc) by using the data from the plot, how can I do that?

I would appreciate any tip, and Thanks in advance!

Answer 1

[Adam Danz]

If you have the variables app.Tempreture_In, etc..., why not use them to compute the statistics?

If you only have the figures in a .fig file, you can get the (x,y) values by searching for the axes children.

Demo:

% Open figure
fig = gcf(); 
ax = gca(fig);  % assuming the figure has 1 axes, otherwise, select the axes
objs = ax.Children; % object handles like lines, scatter, etc
x = objs(1).XData; % x-values for the first object
y = objs(1).YData; % y-values for the first object. 

[Adam Danz]

@Hidd_1's answer moved here as a comment

I would like to choose a range of the data visually to apply the statistical calculation, that's why I am looking for a way to selecte it from the graph and then compute.

[Adam Danz]

If you have the variables, then index them to your selected range. For example, if you want to compute the mean of y within the range of x=2 and x=10, then for the line produced by plot(x,y),

isInRange = x>=2 & x<=10;
mu = mean(y(isInRange))

[Hidd_1]

I would like to export the app as exe file, and the user select the data and process it without any coding.

How can I merge the code in a way that the user select the data and than click on a button for instance and than get the result?

[Adam Danz]

Now your goal is more clear.

This answer provides a demo that shows how a user can draw a temporary rectangle in the axes to select a range of data. It returns the (x,y) coordinates of the selected data which you can use to compute statistics.