Determine if mouse click on a plot is within plot region

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Luke Chen 2011-4-5

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Hi, so I have a 2D plot, and when I click on any point, I need to know whether the point I clicked is inside the plot region or outside. Can someone show me how it can be done? Thanks

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Luke Chen 2011-4-5

Sorry, the title should say "click" instead of "clock"

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Answer 1

Jiro Doke 2011-4-5

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What do you mean by "plot region"? Within the X-limit of the axes? Within the plotted data range?

Take a look at ginput. The output of it can be used to compare with xlim and ylim, or the plotted data range (depending on what you mean by "plot region").

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Answer 2

Matt Fig 2011-4-5

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在 MATLAB Online 中打开

Here is a way to do it programmatically, as in a GUI for example. Save this in an M-file then run the M-file. Click on the axes or outside the axes:

function [] = example()
fh = figure;
axes('units','pix')
plot(1:10)
set(fh,'windowbuttondownfcn',{@fhbdfcn,get(gca,'position')})
function [] = fhbdfcn(varargin)
% WindowButtonDownFcn for figure.
P = varargin{3}; 
cp = get(varargin{1},'currentpoint');
if cp(1)>P(1) && cp(2)>P(2) && cp(1) < (P(1)+P(3)) && cp(2)<(P(2)+P(4))
    disp('In Axes')
else
    disp('Not in Axes')
end