[Numpy-discussion] simple question

Mathew Yeates myeates at jpl.nasa.gov
Thu Jul 6 15:42:08 CDT 2006


The very example you give produces
IndexError: arrays used as indices must be of integer type

this is with 0.9.8

Also .....while your example says "rand" I had to say numpy.rand
This is on WindowsXP

Mathew


Travis Oliphant wrote:
> Mathew Yeates wrote:
>
>> Not working.
>> A[row,all_dates == 10] = -1 where all_dates is a matrix with column 
>> length of 14 [[960111,..,..
>> and A is a matrix with same column length
>>
>> I get
>> IndexError: arrays used as indices must be of integer type
>>
>> when I print out all_dates == 10
>> I get
>> [True True True True True True True True True False False False True 
>> True]]
>>
>> I experimented with "<" instead of "==" but I still get boolean 
>> values as indices.
>>
>> Any help?
>>  
>>
> What version are you using?  Can you give an example that shows the 
> error.  It's hard to guess the type of all the variables.  The 
> following works for me.
>
> import numpy
> print numpy.__version__
> A = numpy.matrix(rand(3,14))
> all_dates = array([10,10,1,10,1,10,0,10,0,10,0,1,10,1])
> row = 2
> A[row, all_dates == 10]
>
>
>
>
>
> -Trvis
>
>





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