Deleting Background Image After Interpolation

Dear All,

As the question suggests, I need to know how to clear the background image after I plotted the interpolated curve.

if true
rgb = imread('leaf.jpg');
figure
imshow(rgb);
axis([0 500 0 500]);
hold on;
xy = [];
disp('Left mouse button picks points.')
disp('Right mouse button picks last point.')
p = 1;  %Loop flag
n = 0;  %Incrementer for points.
while  p == 1
  [xi,yi,p] = ginput(1);
  plot(xi,yi,'ro')
  n=n+1;
  xy(:,n) = [xi,yi];
end
%Interpolate with a Spline curve.
t = 1:n;
ts = 1:0.1:n;
xys = spline(t,xy,ts);
% Plot the interpolated curve.
plot(xys(1,:),xys(2,:),'b-');
hold off
clf(rgb)

    % code
  end

Thanks to all! :)

Answer 1

[Image Analyst]

Not sure what that means, but you can use delete() or clear() to get rid of variables.

[Susie]

I think I got it :) Thank you though!

I'm basically putting an image on a plot, then taking points, then using spline() and ginput() I can play connect the dots and get a curve that fits the points where I clicked. Just needed the image to disappear so I can have just the final curve.