How can i convert a string to an array with elements type float 64

How can i convert a string to an array with elements type float 64 - Printable Version

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How can i convert a string to an array with elements type float 64 - zoya2385 - May-11-2017

Hello,

I have to convert the variable input to an array with dtype float64.

The variable input is as below:

[code]print input
[  6.36505950e+10   6.36505951e+10   6.32830000e+01 ...,   0.00000000e+00
0.00000000e+00   0.00000000e+00]

FV = np.array(input)
print FV
[  6.36505950e+10   6.36505951e+10   6.32830000e+01 ...,   0.00000000e+00
0.00000000e+00   0.00000000e+00]

print type (FV)
<type 'numpy.ndarray'>
print FV.dtype
|S109[/code]

As you can see, elements type of FV array is |S109. How can i convert elements type to float64 ?

I tried :

FV = np.array(featureVector, dtype=np.float64)

but it doesn't work.

Note: the print do not display all elements of input variable (see the ellipsis ...) because there are many elements (38 elements).

thank you for your help,

RE: How can i convert a string to an array with elements type float 64 - wavic - May-11-2017

input is reserved Python word - built-in function. You are overwriting it.

RE: How can i convert a string to an array with elements type float 64 - zoya2385 - May-11-2017

Ok i'll replace "input" by "test". it's the same result.

print test
[  6.36505950e+10   6.36505951e+10   6.32830000e+01 ...,   0.00000000e+00
0.00000000e+00   0.00000000e+00]

FV = np.array(test)
print FV
[  6.36505950e+10   6.36505951e+10   6.32830000e+01 ...,   0.00000000e+00
0.00000000e+00   0.00000000e+00]

print type (FV)
<type 'numpy.ndarray'>
print FV.dtype
|S109

How can i set elements type as float64 ?

RE: How can i convert a string to an array with elements type float 64 - nilamo - May-11-2017

.astype()?

https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.astype.html