Function of an array

Question

I have an array defined in this way (extracting the third column of a dataset):

value=[]
value.append((p[3]))
x=np.array(value)

How can I do if I would like to obtain a new array containing the Log10 (o a different function) of the array x? I have tried with:

logx=np.array(log(x))

but it gives me the following error:

TypeError: 'numpy.ufunc' object is not subscriptable.

Where am I wrong?

Answer 1

Not sure why Nikolay's answer isn't working for you, but you could also do:

logx = map(np.log, x)

Answer 2

You can just use: logx = np.log(x)