ginput question

How do I control ginput execution. If I am panning through a large data plot, and if I want to zoom in on the plot and then use ginput to get x and y values. ginput seems to take into effect immediately as the plot appears on the screen and blocks zoom in and many other functions.

Thanks

Answer 1

[Grzegorz Knor]

One possibility:

% Display a file
I = imread('rice.png');
imshow(I);
zoom on; % use mouse button to zoom in or out
% Press Enter to get out of the zoom mode.
% CurrentCharacter contains the most recent key which was pressed after opening
% the figure, wait for the most recent key to become the return/enter key
waitfor(gcf,'CurrentCharacter',13)
zoom reset
zoom off
[c,r,but] = ginput(1)

from:

http://www.mathworks.com/support/solutions/en/data/1-1CBCQ/?solution=1-1CBCQ

Other idea:

Write function call:

function call(src,evnt)
if double(evnt.Character)==103
  ginput(1)
end

And then plot your data in this way:

figure('keypressfcn',@call);plot(1:10)

The 'g' key will activate ginput function. But first you have to unmark all positions from figure toolbar.

Grzegorz