File Exchange

image thumbnail

Gray Code Manipulation

version 1.0 (7.48 KB) by

Generate Gray Codes and convert them to integers.

12 Downloads

Updated

No License

Gray Codes are used for Goniometers,
a Hamiltonian Circuit on a Hypercube,
and for searches and optimizations
of functions of a few variables each
of which takes a few discrete values.
For details see file GrayCode.txt
that is included with this submission.

Comments and Ratings (4)

it really help! thanks! :)

Good Job!

You can get at least a 5-10x speedup in the integer routines by changing the routines to cast floats to the correct uint** type and replacing the fix(0.5*k) with bitshift(k, -1).

For the 10-12 bit long codes I'm working with, graytest(10) and (12), the ratio goes from ~ 400 to 1500/2800 upon changing the routine, including the appropriate type checking and casting.

Also, the fix() call in int2gray() at least doesn't play nicely with a uint** passed in. I haven't checked gray2int().

That said, I've gotten great use out of (my modified versions of) these routines. Thanks for providing them.

my name is chris

great stufff ;)

MATLAB Release
MATLAB 5.2 (R10)

Download apps, toolboxes, and other File Exchange content using Add-On Explorer in MATLAB.

» Watch video

Win prizes and improve your MATLAB skills

Play today