Re: problem on bin2dec

[Quentin Spencer]

frank wang wrote:
> Hi,
>  
> I have a matlab code that convert binary to decimal. For example,
>  
> a=num2str([ 1 1 1 0]);
> b=bin2dec(a);
> ans=14.
>  
> However, on Octave,
>  
> bin2dec(num2str([1 1 1 0]))
> ans = 584.
>  
> How could I fix this? My data set is quite big.

It looks like Matlab's bin2dec function was designed to ignore white 
space in strings, and octave's version wasn't. I usually perform this 
conversion using the bi2de function from octave-forge, which is faster 
because it doesn't convert to a string first, and it works in both 
Matlab and octave (I think in Matlab you have to have the communication 
toolbox).
octave:1> bi2de([1,1,1,0])
ans = 7
octave:2> bi2de([1,1,1,0],'left-msb')
ans = 14


Quentin