Combination of 2 numbers in 7 rows

Hi!

I need to get all possible combinations of 1 and 0 in 7 rows, 128 different combinations. How can i get this in Matlab? I currently uisng Matlab 7.6.0

Answer 1

[Jan]

DEC2BIN converts the doubles to chars, and the -'0' converts them back to doubles. Directly:

out = rem(floor((0:127)' * pow2(-6:0)), 2)

Answer 2

[Daniel Shub]

dec2bin(0:127)

Building on the comments I am going to edit my answer. The above command produces 128 rows of 7 element strings. Specifically it is a 128x7 matrix of class char. That was my interpretation of what you wanted. Andrei and Walter think you want a 128x7 matrix of class double. You can get this with

dec2bin(0:127)-'0'

You also might want a 128x7 matrix of class logical

logical(dec2bin(0:127)-'0')

[Andrei Bobrov]

dec2bin(0:127)+'0'-96

[Walter Roberson]

dec2bin(0:127)-'0'

[Daniel Shub]

@Andrei and Walter, I wonder want Per wants (char or double), although I think logical is probably better than double. If you put them as an answer, maybe we will find out.