Function to create a non equally spaced array in numpy

Question

I would like to create an array with the form [1, 2, 4, 8, 16, 32, ...]. Not always with that spacing between numbers.

Is there a linspace/arange type function which allows me to create vector of non equally spaced numbers?

Thanks

I think you need to better define your requirements. "non-equally spaced numbers" is very vague. @RafaelC offers a solid solution. But you way have further requirements we are not aware of. — rahlf23
– rahlf23, Commented Aug 23, 2018 at 20:01
You need specifically a python (numpy) function? AAny problem with this way: [2**i for i in range(6)] — Shivid
– Shivid, Commented Aug 23, 2018 at 20:03
@rahlf23 It is vague on purpose. I'm looking for a flexible function (if it exist). And as I stated in my question, it will not always have the same spacing. — user3408085
– user3408085, Commented Aug 23, 2018 at 20:06
@Hamidreza I'm aware that I can build my own function, nut I'm new to numpy and I want to know if there's a predefined tool for this. Maybe the answer is that there's none and that I must build my own. — user3408085
– user3408085, Commented Aug 23, 2018 at 20:08

Edward Khachatryan · Accepted Answer · 2018-08-23 20:17:09Z

5

Yes, there is also logspace and geomspace in NumPy.

np.geomspace(1,32,6) gives you array([ 1., 2., 4., 8., 16., 32.])

answered Aug 23, 2018 at 20:17

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