MATLAB - display date and other numbers

Question

MATLAB - display date and other numbers

tuli (Electrical)

(OP)

25 Dec 21 22:35

Hello

I am trying to program an optimization where I would like to print the date, time, variables values and objective functions values in one row.

I have two vectors var=[1 2.7] and cost=[5.8 6.1]

I would like to display something like the lines below

25-Dec-2021 17:22 - 1.0 2.7 5.8 6.1
25-Dec-2021 20:21 - 1.5 3.4 7.9 3.2

I tried

disp([strcat(datestr(now),' - ') num2str(var) num2str(cost)]) and I got everything ok except that the cursor would be on the same line (no carriage return) and there is no space between the 3 strings

any ideas?

Thanks

GregLocock (Automotive) · Answer 1 · 2021-12-25 23:26:56

sure, explicitly include a space by inserting ' ' between the things you want seperated by a space.

I have no idea what you mean by the other bit, but a new line disp(' ')
will add an extra line

There are much better ways to achieve your output using fprintf and so on, but I don't bother.

Cheers

Greg Locock

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tuli (Electrical) · Answer 2 · 2021-12-25 23:41:10

thanks that worked.

Another question: is there a way to have the four numbers formatted for something like 'f5.3' for the numbers (var & cost)?
Not sure where to insert 'f5.3' since these are two arrays

tuli (Electrical) · Answer 3 · 2021-12-25 23:44:20

like for

disp([strcat(datestr(now),' -') ' ' num2str(var) ' ' num2str(cost)])

I get

25-Dec-2021 18:38:54 - 1.2 2.4 5.8 6.3

I would like the numbers to be formatted and equally spaced

25-Dec-2021 18:38:54 - 1.20 2.40 5.80 6.30

Thank you

GregLocock (Automotive) · Answer 4 · 2021-12-25 23:47:51

Yes, using *printf

Cheers

Greg Locock

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MATLAB - display date and other numbers