[Numpy-discussion] Problem with Numpy and array

Youngung Jeong youngung.jeong at gmail.com
Thu May 12 06:32:15 EDT 2011


Sorry you don't have to transpose the matrix...


Youngung Jeong




On Thu, May 12, 2011 at 7:30 PM, Youngung Jeong <youngung.jeong at gmail.com>wrote:

> Hello,
>
> Use np.loadtxt
>
> >>> a = np.loadtxt(filename)       ##in case no rows to skip.
> >>> a = a.transpose()                 ##in your case, I guess you should
> transpose it..
>
>
>
> Youngung Jeong
>
>
>
>
> On Thu, May 12, 2011 at 7:21 PM, Claudia Chan Yone <
> chanyone.claudia at gmail.com> wrote:
>
>> Hi,
>>
>> I have a problem with the Numpy module, but I think it is a very basic
>> issue
>> for many of you...
>> I have a file with numerical data (2 columns, and 5 lignes) as :
>> 1 2
>> 3 4
>> ... ...
>>
>> And I woulid like to convert it in a matrix as :
>> [[1,2]
>> [3,4]
>> ...]
>>
>> My python script is :
>>
>> fic=open('file.txt','r')
>> ligne=fic.readlines()
>> fic.close()
>>
>> m=numpy.array(ligne)
>>
>> and I get :
>> ['1,2\n' '3,4']
>>
>> So I cannot call m[0][0]...
>>
>> Even if I modify my text file with :
>> [[1,2],
>> [3,4]
>> ...]
>>
>> I get :
>>
>> ['[[1,2],[3,4]]'] and I cannot call m[0][0].
>>
>> Thank you very much for your help,
>>
>>
>> Clo
>>
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>> http://mail.scipy.org/mailman/listinfo/numpy-discussion
>>
>>
>
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