[Numpy-discussion] numpy input with genfromttxt()

jonasr jonas.ruebsam@web...
Fri Jun 3 09:33:11 CDT 2011


thank you very much, works much nicer and faster in comparison to the script
i wrote and used before  ,
im not that much used to lambda forms but it seems quit usefull in
situations like this 


Olivier Delalleau-2 wrote:
> 
> Here's an ugly one-liner:
> 
> numpy.genfromtxt('data.txt', converters=dict([k, lambda x:
> float(x.replace(',', '.'))] for k in
> range(len(open('data.txt').readline().strip().split()))))
> 
> -=- Olivier
> 
> 2011/6/3 jgrub <jonas.ruebsam@web.de>
> 
>>
>> Hello, im actually try to read in  data with genfromtxt(),
>> i want to read in numbers which are stored in  a textfile like this:
>>
>> 0,000000        0,001221        0,001221        0,000000        1,278076
>>      160,102539
>>
>> 4,000000E-7     0,000000        0,000000        0,002441        1,279297
>>      160,000000
>>
>> 8,000000E-7     -0,001221       0,000000        0,001221        1,279297
>>      159,897461
>>
>> 1,200000E-6     0,000000        0,000000        0,001221        1,279297
>>      160,000000
>>
>> 1,600000E-6     -0,001221       0,000000        0,003662        1,278076
>>      159,897461
>>
>> 2,000000E-6     0,000000        -0,001221       0,003662        1,279297
>>      160,000000
>>
>> my problem is that they are seperated with a comma so when i try to read
>> them
>> i just get a numpy array with NaN's.  is there a short way to replace the
>> "," with "."  ?
>>
>> --
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