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Unique Number Assignment To Each Time

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Hi,
I have a series of times in column 1. The times are 1.1, 1.1, 1.1, 1.2, 1.2, 1.2, 2.1, 2.1, 2.1 etc. I want to assign a unique number to each of these times. In order words, each time series should have its own number. Eg, all 1.1 should be assign the number 0, all 1.2 to the number 1 etc. A unique number to each series or repeating time. Any thoughts?
Thanks!

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Accepted Answer

Andrei Bobrov
Andrei Bobrov on 18 Jan 2020
a=[1.1, 1.1, 1.1, 1.2, 1.2, 1.2, 2.1, 2.1, 2.1]'
[i,g]=findgroups(a);
out = i - 1;

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More Answers (1)

Walter Roberson
Walter Roberson on 18 Jan 2020
Use the third output of unique(). Or use findgroups()

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