interger to binary


Thanks a lot to all of you for your help. This looks very promising. I will test it on Monday.

Regards, Marjolaine.

Michael Droettboom <mdroe@...86...> 09/05/08 7:54 PM >>>

You could do something like:

def bitget(value, bit_number):
    return (value & (1 << bit_number)) != 0

which will return True or False for the given bit number, and this
function works on numpy arrays. (Bits are numbered base-0 -- I don't
know if that matches matlab).

Hope that helps,

Marjolaine Rouault wrote:



I was wondering if python has the equivalent of the matlab bitget.m function.

I have a large 2 dimensional variable of type uint32 which I must convert to binaries and then find if bit 23 of the binary for each point is 0 or 1. The matlab bitget function is ideal for that but I can't find much in python. The only thing I found was binary_repr which converts to a sting and can only be used for 1 point at a time.

Any suggestions?

Thanks, Marjolaine.

Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard.
The full disclaimer details can be found at

This message has been scanned for viruses and dangerous content by MailScanner,
and is believed to be clean. MailScanner thanks Transtec Computers for their support.