How to make filename that message + date&time using [imwrite function].

The MATLAB code is {imwrite(red, datestr(now,'yyyy-mm-dd HH-MM-SS-FFF'),'png');}

I want to make file name "test_yyyy-mm-dd HH-MM-SS-FFF".png

Please, Let me know the method.

Thanks.

Answer 1

[Kodavati Mahendra]

filename = strcat(datestr(now,'yyyy-mm-dd HH-MM-SS-FFF'),'.png');
imwrite(red, filename);

Solved? Problem was with the syntax for imwrite :-)

Edit 1:

filename = strcat('Test_',datestr(now,'yyyy-mm-dd HH-MM-SS-FFF'),'.png');
imwrite(red, filename);

Now?

[Junwon Park]

Not yet. I need file name that is "message(such as Test_)" + "Date & Time".

File name is: Test_2018-06-05 10-01-40-954.png

Thank you for your reply.

[Kodavati Mahendra]

You can just add your message string to the strcat function

[Stephen23]

@Junwon Park: using sprintf is often clearer than concatenating strings:

filename = sprintf('Test_%s.png',datestr(now,'yyyy-mm-dd HH-MM-SS-FFF'));

Answer 2

[Junwon Park]

Thank you so much. It's solved. :)