Convert Array of Float to comma delimited string

Hi I would like to convert an array of floats to a single string, with commas separating the numbers, as below:

data = [1 2 3 4];
output = "1, 2, 3, 4"

However, I cannot seem to get the commas implemented - here is my attempt:

data2 = cellstr(num2str(data));
output = strjoin(data2, ', ');

i then get an output of;

'1 2 3 4'

What am I doing wrong?

Answer 1

[Stephen23]

data = [1,2,3,4];
strjoin(compose("%d",data),", ") % provides formatting control

ans = "1, 2, 3, 4"

strjoin(""+data,", ") % default formatting

ans = "1, 2, 3, 4"

[Ted Baker]

Thank you very much Stephen.

[RST]

And for 2D arrays we can do:

data = rand(3,4);

csvData = strjoin( join( compose('%.3f', data), ', '), newline())

csvData = 
    '0.979, 0.700, 0.043, 0.264
     0.007, 0.619, 0.588, 0.401
     0.695, 0.447, 0.679, 0.236'