save the information of the point by clicking on the graph

Question

khatereh 2012-11-7

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Hi,

I have a series of plots that will show up one after another, I want to activate the action that for each plot the user should pick two points in the plot ( start and end) and the information of those two points will be saved for all those graphs.Can anybody know how to tackle this problem?

thanks

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Answer 1

Evan 2012-11-7

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编辑：Evan 2012-11-7

在 MATLAB Online 中打开

You can get the indices of your selection by calling datacursormode and setting a custom update function. Example:

function cursortest
     fig = figure;
     imagesc
     h = datacursormode(fig);
     set(h,'UpdateFcn',@myupdatefcn)
     datacursormode on
end
function txt = myupdatefcn(obj,event_obj)
      % Get selection position
      txt = get(event_obj,'Position')
end