Waitbar2

WAITBAR2 - Displays wait bar with fancy color shift effect

Adaptation of the MatLab standard waitbar function:

WAITBAR2 is typically used inside a FOR loop that performs a
lengthy computation. A sample usage is shown below:
h = waitbar(0,'Please wait...', 'BarColor', 'g');
for i = 1:100,
% computation here %
waitbar(i/100, h);
end
close(h);

Examples for the 'BarColor' option:
- Standard color names: 'red', 'blue', 'green', etcetera
- Standard color codes: 'r', 'b', 'k', etcetera
- A RGB vector, such as [.5 0 .5] (deep purple)
- Two RGB colors in a matrix, such as [1 0 0; 0 0 1] (gradient red-blue)

The latter example shows how to create a custom color-shift effect. The top row of the 2x3 matrix gives the initial color, and the bottom row the end color.