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How to convert day information to a number?

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How can I convert day information to a number?
For instance, Mon to 1, Tue to 2, etc.
Fo from character to number data.

Accepted Answer

Star Strider
Star Strider on 24 Sep 2021
Experiment with something like this —
daynr = @(x) find(strcmp(x, {'Mon','Tue','Wed','Thu','Fri','Sat','sun'}));
nr = daynr('Thu')
nr = 4
Everything depends on the context it will be used in, so this is just an example of one approach.
John Lee
John Lee on 24 Sep 2021
Oh, this is what I wanted, thanks. I modified your answer with a 100-by-1 column string vector (i.e. "day" variable)
load day % 100-by-1 string data
daynr = @(x) find(strcmp(x, {'Mon','Tue','Wed','Thu','Fri','Sat','Sun'}));
for i=1:length(day)
nr(i) = daynr(day(i));

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