What the error in this code..?

      N = 7;

     for m=1:N

    fname(m,:)=files(m+7,:);

    rgb = imread(fname(m,:));

    imshow(rgb);

    cdata = ginput;

    data(:,:,m) = cdata(1:4,:);

end

For this seven images i want data where i will click.

But when i am executing this code, it shows only cursor on image but not allowing to click.. Why..?

If any mistake then tell me..?

[Walter Roberson]

Try using

image(rgb)

instead of imshow(rgb)

[Lalit Patil]

Thank you..

And also cdata = ginput(4)

[Lalit Patil]

when i am clicking on image it is just a click and i can not see where actual i have clicked, so i want to put a mark of '+' sign at there where i click.. So, what will be the modification in code.?

Answer 1

[Walter Roberson]

Consider using roipoly()

Alternately, only ginput() one value at a time, and text() a '+' into place at the returned coordinates before going on to the next.

[Lalit Patil]

I will do ginput(4) so there will be four values.. Now when i clicking to extract this values at that time '+' point should be placed at clicked place in image so i can see how exactly i have clicked... I am clicking at corner of chessboard..

And what you have explained i can't understand..

So, i want to modify code..

[Walter Roberson]

for K = 1 : 4
  thispoint = ginput(1);
  text(thispoint(1), thispoint(2), '+');
  points(K,:) = thispoint;
end