How do I insert the comma marker for thousands into large numbers while printing to file or Command Line in MATLAB 7.7 (R2008b)?
27 views (last 30 days)
Show older comments
MathWorks Support Team
on 18 Jan 2010
Commented: Stephen23
on 14 Nov 2023
I would like my numbers to appear with comma markers for thousands. For instance, I would like to display the number 1200387 as 1,200,387
Accepted Answer
MathWorks Support Team
on 28 May 2021
Edited: MathWorks Support Team
on 28 May 2021
To add comma separators between groups of three numbers to indicate the thousands place of a large number, save the following code to a file called "ThousandSep.m":
function out = ThousandSep(in)
%THOUSANDSEP adds thousands Separators to a 1x1 array.
% Example:
% ThousandSep(1234567)
import java.text.*
v = DecimalFormat;
out = char(v.format(in));
Then you can use the ThousandSep function (as defined above), to obtain a string with comma separated digits using the following line of code:
ThousandSep(123456778)
The resulting answer is:
ans =
123,456,778
0 Comments
More Answers (1)
Toshiaki Takeuchi
on 14 Nov 2023
Using pattern
vec = 123456789;
txt = string(vec);
pat1 = lookBehindBoundary(digitsPattern); % (?<=\d)
pat2 = asManyOfPattern(digitsPattern(3),1); % (\d{3})+
pat3 = lookAheadBoundary(pat2+lineBoundary("end")); % (?=(\d{3})+$)
pat4 = pat1+pat3; % (?<=\d)(?=(\d{3})+$)
replace(txt,pat4,",")
1 Comment
Stephen23
on 14 Nov 2023
vec = 1234.56789;
txt = string(vec);
pat1 = lookBehindBoundary(digitsPattern); % (?<=\d)
pat2 = asManyOfPattern(digitsPattern(3),1); % (\d{3})+
pat3 = lookAheadBoundary(pat2+lineBoundary("end")); % (?=(\d{3})+$)
pat4 = pat1+pat3; % (?<=\d)(?=(\d{3})+$)
replace(txt,pat4,",")
See Also
Categories
Find more on Resizing and Reshaping Matrices in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!