MATLAB: How to determine max peak using ginput

ginputmax peakmin peak

Basically I'm trying to find max/min values for a range of a graph using ginput to select the start and end of this range. I have many different graphs I want to use this for but for simplicity I'm trying to first do it on a basic sin function and can't seem to figure it out. As of now I have:
t = linspace(0,2*pi)';
y = sin(t);
plot(t,y)
[time,~] = ginput(2)
%Selecting two random points gives the output
time =
    0.3605
    2.5930
Now how do I go about finding the max value of y within this chosen range of 0.3605<t<2.5930?
I know the answer will be 1 (sin function) but I'm trying to understand the concepts before applying it to the more complicated graphs I have

Best Answer

clc ; clear all ;
t = linspace(0,2*pi)';
y = sin(t);
plot(t,y)
[time,~] = ginput(2) ;
%%Get data between your time
N = 200 ;
ti = linspace(time(1),time(2)) ;
yi = interp1(t,y,ti) ;
%%GEt maximum 
[val,idx] = max(yi) ;
fprintf('maximum value sint he range %f and %f is %f:\n',time(1),time(2),val)
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