Bresenham's Line

Generate a line profile of a 2d image

Description

Generate a line profile of a 2d image
using Bresenham's algorithm.

For a demo purpose, try

bresenham();

• MATLAB release: MATLAB 6.5 (R13)

[scardanzan ivan]

an image with an example , please

[julio choque]

excellent

[Ryan Crow]

Well done! Demo and visualization included.

[Canuck Hanks]

Very nice with demo! Thanks!

[Tina Hegarty]

Brilliant. You probably just saved me a few hours! Many thanks.

[Christian]

 

[Christian]

Hi! Nice Code!

However, i think there is a little bug:

the code that i downloaded says:

----------
  if steep,
        myline(n) = mymat(x_n,y_n);
        outmat(x_n,y_n) = 0;
        X(n) = x_n;
        Y(n) = y_n;
    else
        myline(n) = mymat(y_n,x_n);
        outmat(y_n,x_n) = 0;
        X(n) = y_n;
        Y(n) = x_n;
    end
-------

...this does not work for me, i think the code within the if and else statements should be swapped:

---------
if steep,
        myline(n) = mymat(y_n,x_n);
        outmat(y_n,x_n) = 0;
        X(n) = y_n;
        Y(n) = x_n;
    else
        myline(n) = mymat(x_n,y_n);
        outmat(x_n,y_n) = 0;
        X(n) = x_n;
        Y(n) = y_n;
    end
-------

Best,
Christian

[Fernando G. del Cueto]