What is a double matrix?
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I have data that I need to convert into a double matrix. How do I do that ?
5 Comments
Awais Saeed
on 11 Dec 2021
Decimal point data (aka floating pointer numbers) can be represented as either single precision numbers or double precesion numbers. Single precision data takes 32bits in memory while double precision data takes 64bits. The greater the number of bits, the higher the accuracy. But you can easy tell that double precision costs you more memory. Read more here.
Answers (3)
KSSV
on 11 Dec 2021
If it is a string, read about str2num, str2double.
If it is a single, use double.
If it is a sym class, use double.
3 Comments
Awais Saeed
on 11 Dec 2021
A = magic(4) % data type is double
s = single(A) % convert double to single
d = double(s) % convert single to double
whos
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Walter Roberson
on 11 Dec 2021
retime() works fine with single precision.
dates = datetime('2000-01-01') + calmonths(0:3:35).'
data = randn(size(dates), 'single')
TT = timetable(dates, data)
TT5 = retime(TT, 'yearly', 'mean')
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