display comma in xlabel

Hi all

How can I change the format of the numbers in the x-axis to be like 10,000 instead of 10000?

number of rounds 10000 but I would like to display like 10,000.

How could I change it?

plot(1:Simulation,ooooo(2,:),'k-.');
title('PDR')
xlabel('Rounds');
ylabel('Time (ms)');
grid on

Answer 1

[Star Strider]

In the NumericRuler Properties documentation see TickLabelFormat to understand how to put the comma thousands separator in the tick format.

[Walter Roberson]

This is a relatively new feature involving using comma as a format item in the sprintf()-like format string. The comma is not generally recognized in other places that accept sprintf()-like format strings.

[NOUF ALHARBI]

Hi

I am traing to add TickLabelFormat but still I have error

plot(1:Simulation,ooooo(2,:),'k-.');
title('PDR')
xlabel('Rounds',TickLabelFormat,'%,g');
ylabel('Time (ms)');
grid on

Are there any ideas?

[Walter Roberson]

plot(1:Simulation,ooooo(2,:),'k-.');
title('PDR')
xlabel('Rounds')
xtickformat('%,g');
ylabel('Time (ms)');
grid on

The xtickformat() call requires R2016b or later. I am not sure when ',' became supported as a format item; R2018b at latest.

[NOUF ALHARBI]

Many thanks Walter

This code work with me.

But I have problem, I wnat number like this:

1000 2000 3000 ..... 10,000

with your code add comma but with 1,000 2,000 3,000 ... 10,000

How can I change it?

Rgards,

Nouf

[Walter Roberson]

The %, format modifier only supports comma for every 3 locations.

You would need to construct your own tick labels according to whatever rules you like. For example,

ax = gca;
xticklabels(ax, regexprep(compose('%d', ax.XTicks), '(\d\d)(\d\d\d)$', '$1,$2'));

This particular code will only put in one comma. For example 3141 31415 314159 3141592 would become 3141 31,415 314,159 3141,592

[NOUF ALHARBI]

There is error:

Unrecognized method, property, or field 'XTicks' for class 'matlab.graphics.axis.Axes'.

[Walter Roberson]

ax = gca;
xticklabels(ax, regexprep(compose('%d', ax.XTick), '(\d\d)(\d\d\d)$', '$1,$2'));

[NOUF ALHARBI]

Thank you so much Walter.

[Star Strider]

@Walter Roberson — Thank you. (Internet here down for two hours this morning.)

Answer 2

[Image Analyst]

Turn the number into a string. See my attached little utility function.

[Image Analyst]

My function handles those numbers perfectly:

v = [3141 31415 314159 3141592]

v = 1×4

3141 31415 314159 3141592

for k = 1 : numel(v)
    str = CommaFormat(v(k))
end

str = '3,141'

str = '31,415'

str = '314,159'

str = '3,141,592'

[Walter Roberson]

The challenge is that the user does not want the comma for 3141 -- only for 10000 or more.

[Image Analyst]

@Walter Roberson oh, okay. In that case you'd have to put in a check for the number of digits being 5 or greater if he wanted to use that function.