# How to know the smallest number after 0

1 view (last 30 days)
mohd akmal masud on 29 Dec 2021
Commented: Voss on 29 Dec 2021
Hi all, I have set images 3D (256x256x90 uint16), let say P. Anyone know how to know the smallest number after 0?
>> min(min(min(P)))
ans =
uint16
0
>> max(max(max(P)))
ans =
uint16
1387
David Goodmanson on 29 Dec 2021
Hi mohd,
see 'help eps' for a list

Voss on 29 Dec 2021
The smallest uint16 number after zero is one.
Voss on 29 Dec 2021
If you want to find the smallest number greater than 0 that is in your image data, you can do this:
min(P(P > 0))

Chunru on 29 Dec 2021
P = randi([0 65535], [5 5 10], 'uint16'); % smaller size for demonstration
P1 = P(:);
min(P1(P1>0))
ans = uint16 141
mohd akmal masud on 29 Dec 2021
sir, what is [5 5 10] ?

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