Variable in title is appearing as random string characters.

Running matlab R2019a

Im creating a mesh plot.

Here is my code for the title:

og_rows = 15360
og_cols = 1024
title(['Form Removed Data ',og_rows, 'x', og_cols])

This is following the matlab guidelines here: https://uk.mathworks.com/help/matlab/ref/title.html

This strangely results in this:

Answer 1

[Joe Pashley]

To use the format matlab reccomends, you must remember to change the number into a string. So the code would be:

title(['Form Removed Data ',num2str(og_rows), 'x', num2str(og_cols)])

Answer 2

[Walter Roberson]

title( sprintf('Form Removed Data %d x %d',og_rows, og_cols) )

[Joe Pashley]

Hey, thanks for your help.

I actually spotted my own mistake, it must be input as a string and not a number. But thanks for your answer anyway.

Answer 3

[Steven Lord]

Another option (instead of str2num or sprintf) is to use string operations.

og_rows = 15360;
og_cols = 1024;
title("Form Removed Data " + og_rows + " x " + og_cols)

[Walter Roberson]

(The above solution requires R2017a or later.)