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Max peak between two points using ginput

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Nathan
Nathan 2012-5-15
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
  1 个评论
Thomas
Thomas 2012-5-15
Do you want the difference between the peaks or just which one is the highest?

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回答（2 个）

Thomas
Thomas 2012-5-15
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
Image Analyst
Image Analyst 2012-5-15
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.

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