MATLAB: Ginput: How to prompt for value after each click

ginputgui

Hi,
I'm making a little program that loads a photo then calls ginput so I can click on a number of features. For each feature, I want to enter an estimated value.
Click Prompt: Enter thickness: Enter Value
Click Prompt:
etc
Is there anyway to do this?
Thanks,
Cole

Best Answer

For the thickness prompt, try inputdlg().
To get the points, try getpts() if you have the Image Processing Toolbox. Or just put
[x,y] = ginput(1)
into a while loop where you break out of the while loop if the user clicks the right mouse button. Try this:
clc;
close all;  % Close all figures (except those of imtool.)
clear;  % Erase all existing variables. Or clearvars if you want.
workspace;  % Make sure the workspace panel is showing.
fontSize = 24;
imshow('cameraman.tif');
hold on;
maxAllowablePoints = 5; % Whatever you want.
numPointsClicked = 0;
promptMessage = sprintf('Left click up to %d points.\nRight click when done.', maxAllowablePoints);
titleBarCaption = 'Continue?';
button = questdlg(promptMessage, titleBarCaption, 'Continue', 'Cancel', 'Continue');
if strcmpi(button, 'Cancel')
  return;
end
while numPointsClicked < maxAllowablePoints
  numPointsClicked = numPointsClicked + 1;
  [x(numPointsClicked), y(numPointsClicked), button] = ginput(1)  
  plot(x(numPointsClicked), y(numPointsClicked), 'r+', 'MarkerSize', 15);
  if button == 3
    % Exit loop if
    break;
  end
end
% Print to command window
x
y
msgbox('Done collecting points');
Related Question