MATLAB: Convert Array of Float to comma delimited string

Question

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

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"