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Re: Comparing two float arrays upto 0.0001 precision [message #93952 is a reply to message #93951]

Mon, 05 December 2016 02:38

Markus Schmassmann
Messages: 129
Registered: April 2016

Senior Member

On 12/05/2016 07:58 AM, priyamalik484@gmail.com wrote:
> I am trying to compare two very long float arrays upto precision 0.0001
> without using for loop as it is taking alot time in processing. Can any one
> guide me how to compare two long arrays in float????

A=randomu(seed,100000)
B=randomu(seed,100000)
similar=abs(A-B) le 0.0001

Similar is then a byte array that is 1 where A approx B, 0 elsewhere.
If you want instead a list of indices, where A approx B, use

w=where(abs(A-B) le 0.0001,/null)

By the way, avoid using long for anything else than long integers
(32-bit), otherwise you cause confusion.

I hope this helps, Markus

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[Message index]

		Comparing two float arrays upto 0.0001 precision By: priyamalik484 on Sun, 04 December 2016 22:58
		Re: Comparing two float arrays upto 0.0001 precision By: Markus Schmassmann on Mon, 05 December 2016 02:38

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