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Convert numpy array to single number

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  Convert numpy array to single number mboyd02255@gmail.com - 2014-04-28 06:04 -0700
    Re: Convert numpy array to single number Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-04-28 14:16 +0000
    Re:Convert numpy array to single number Dave Angel <davea@davea.name> - 2014-04-28 15:19 -0400
    Re: Convert numpy array to single number Tom P <werotizy@freent.dd> - 2014-04-29 17:42 +0200
      Re: Convert numpy array to single number Papp Győző <pappgyozo@gmail.com> - 2014-05-01 15:26 +0200

#70679 — Convert numpy array to single number

I have a numpy array consisting of 1s and zeros for representing binary numbers:

e.g.

     >>> binary
     array([ 1.,  0.,  1.,  0.])

I wish the array to be in the form 1010, so it can be manipulated.

I do not want to use built in binary converters as I am trying to build my own.

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#70681

On Mon, 28 Apr 2014 06:04:02 -0700, mboyd02255 wrote:

> I have a numpy array consisting of 1s and zeros for representing binary
> numbers:
> 
> e.g.
> 
>      >>> binary
>      array([ 1.,  0.,  1.,  0.])
> 
> I wish the array to be in the form 1010, so it can be manipulated.
> 
> I do not want to use built in binary converters as I am trying to build
> my own.

Did you have a question, or are you just sharing?



-- 
Steven D'Aprano
http://import-that.dreamwidth.org/

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#70690

mboyd02255@gmail.com Wrote in message:
> I have a numpy array consisting of 1s and zeros for representing binary numbers:
> 
> e.g.
> 
>      >>> binary
>      array([ 1.,  0.,  1.,  0.])
> 
> I wish the array to be in the form 1010, so it can be manipulated.
> 
> I do not want to use built in binary converters as I am trying to build my own.
> 

One thousand and ten is an int, not an array. 

So is 10, but it seems a more likely value you might be trying for.

As for using the builtin binary converters, you'd better be a lot
 more specific,  as you cannot even print an int in decimal form
 without utilizing them. The number is in binary already.
 

Please copy the exact problem and constraints,  as well as what
 you've written so far and what's wrong with it.

-- 
DaveA

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#70714

On 28.04.2014 15:04, mboyd02255@gmail.com wrote:
> I have a numpy array consisting of 1s and zeros for representing binary numbers:
>
> e.g.
>
>       >>> binary
>       array([ 1.,  0.,  1.,  0.])
>
> I wish the array to be in the form 1010, so it can be manipulated.
>
> I do not want to use built in binary converters as I am trying to build my own.
>

Do you mean that each element in the array represents a power of two?
So array([ 1.,  0.,  1.,  0.]) represents 2^3 + 2 = 6 decimal?

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#70819

[Multipart message — attachments visible in raw view] — view raw

Maybe something like this?
>>> to_num = lambda array: np.sum(array * 2**np.arange(len(array)-1, -1,
-1))
>>> to_num(np.array([1,0,1,0]))
10




2014-04-29 17:42 GMT+02:00 Tom P <werotizy@freent.dd>:

> On 28.04.2014 15:04, mboyd02255@gmail.com wrote:
>
>> I have a numpy array consisting of 1s and zeros for representing binary
>> numbers:
>>
>> e.g.
>>
>>       >>> binary
>>       array([ 1.,  0.,  1.,  0.])
>>
>> I wish the array to be in the form 1010, so it can be manipulated.
>>
>> I do not want to use built in binary converters as I am trying to build
>> my own.
>>
>>
> Do you mean that each element in the array represents a power of two?
> So array([ 1.,  0.,  1.,  0.]) represents 2^3 + 2 = 6 decimal?
>
> --
> https://mail.python.org/mailman/listinfo/python-list
>

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