Newlines and spaces in strings

Hello,

The following code creates a string, disp_string, to be displayed in a GUI text field:

 % dist_f is a function that outputs an array of values to be printed
 totals = dist_f(t,step);
 for i = 1:length(totals),
        numstr = sprintf('%.2f', totals(i), '\n');
        disp_string = strcat(disp_string, numstr, ' ');
 end
 disp_string = strcat('Distances: ', disp_string);

 % display disp_string on the GUI
 set(handles.stats_text,'String',disp_string);

I would like what appears on the GUI to look like, for example,

Distances: 6.60

32.00

10.44

32.00

with the nice newlines after each distance, but instead it displays

Distances:6.6032.0010.4432.00

without any newlines or spaces anywhere. I've got the formatting all wrong, I think. What am I doing wrong / is this the wrong way to do this?

Thanks in advance for help!

Answer 1

[Jan]

Append the newline to the format string:

...
numstr = sprintf(' %.2f\n', totals(i));
...

I'm not sure, where you want to have the space.

SPRINTF can handle vectors also, such that you can omit the FOR loop:

 totals = dist_f(t,step);
 disp_string = ['Distances: ', sprintf(' %.2f\n', totals)];

[JM]

The first suggestion didn't work but the second one does, thanks! I didn't think of using sprintf with an array.

Do you know if it's possible to select and copy the text on a GUI? I can't so I just print the text to the console.