Finding max value in intervals

Good morning,

I'm postprocessing some field data and I need help in finding the max of a sinusoidal function in a defined interval.

Basically what I have to do is finding the maximun of a sinuoidal signal in a certain interval.

The code I'm using is the following:

t4=[0:1:t1-1];

findpeaks(Itot_up,t4,'MinPeakDistance',0.02)

But sadly it loks like it is not working. In the left picture (in red) is the point I would like to have, while the right one comes from the result. Does anyone know a way to help? Would also be helpfull if the all the data was saved somewhere, in order to have a plot with only the maxpeaks. Thanks. .

Best,

Marco

Answer 1

[the cyclist]

Given your nicely separated peaks, I think you could simply use the 'MinPeakDistance' name-value pair, as was done in this example from the documentation. See the findpeaks documentation for details.

Answer 2

[Marco Bosi]

Thanks, I made it.

Now would it be possible to have a plot with only the maximum points (basically cleaning the graph and keep only the profile) and also having their values associated with an instant ? Thanks.

Marco

[the cyclist]

I'm not sure I fully understand what you mean, but I would think you could make the plot using some combination of the outputs

[pks,locs,w,p]

that come from the findpeaks() function