# Using values in an array to represent characters?

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Noah Kebschull on 26 Nov 2017
Answered: KL on 26 Nov 2017
I have a vector x= [1:1:12]. Each value, from 1 to 12, should represent the corresponding months January to December. 1 is equal to January, 2 is equal to February, and so on. How would I do this, if possible? Also, if I were to create a new vector by selecting values from vector x, how would I display only the corresponding months. For example, my vector is M = [1 2 4 5 6] and I want it to display the months that correspond with those values.

KL on 26 Nov 2017
Use datetime to generate a vector of datetimes and then use month property,
dt = datetime([2017*ones(12,1) (1:12).' ones(12,1)]);
month_names = month(dt,'name');
now month_names has all your month names,
12×1 cell array
'January'
'February'
'March'
'April'
'May'
'June'
'July'
'August'
'September'
'October'
'November'
'December'
Extract it just by indexing,
res = month_names([1 2 4 5 6])
res =
5×1 cell array
'January'
'February'
'April'
'May'
'June'