Max peak between two points using ginput

Hello,

I am trying to find the max peak between two points on a graph, using ginput. In other words, I want to be able to pick two points and the program will tell me the max peak between those two points. Any advice?

Thanks,

Nathan

[Thomas]

Do you want the difference between the peaks or just which one is the highest?

Answer 1

[Thomas]

I dont know if this is what you are looking for?

c=rand(1,10)    % generate some random data
plot(c)          % plot the data
hold on
y=[];
y=ginput(2);     % take two mouse inputs on the graph
[r,c,v]=find(y==(max(y(:,2))));    % find which one is higher
Peak=y(r,:)       % output the highest value coordinates..

hold off

Answer 2

[Image Analyst]

If you have the Image Processing Toolbox, use improfile to get the intensity profile on a line between those two points. Then just pass that profile into the max() function to get the max value and location of the max between those two point.