customised x data in matlab plot

I have an x label ( starting from 0 in the axis - 1000, 2000, 3000, 4000, 50000, 6000)

I want to change the axis to the following starting from 0 in the axis - 2000, 4000, 6000, 8000, 10000, 12000

I have used the following implementation but not working

labels = [0 2000 4000 6000 8000 10000 12000];
disp(plot(X));
set(gca, 'XTick', 1:length(labels));
set(gca, 'XTickLabel', labels);

Can someone help me out with this

Thanks in advance

Answer 1

[Rik]

The XTick property requires a vector with numeric data, but the XTickLabel property requires a cell array.

labels = [0 2000 4000 6000 8000 10000 12000];
disp(plot(X));
set(gca, 'XTick', 1:numel(labels));%this puts the labels at x=1,2,3,4,5,6,7
set(gca, 'XTickLabel', cellfun(@num2str,num2cell(labels));

[Tino]

Hi Rik

Thanks for your swift response. I am getting the error

Error using cellfun

Non-scalar in Uniform output, at index 2, output 1.

set 'UniformOutput' to false.

Error in nuss(line 35)

set(gca, 'XTickLabel', cellfun(@num2str,num2cell(labels)));

Thanks in advance

Tino

[Tino]

Hi Rik

I was able to put the Uniform output false.

But when the plot the graph the numbers all clustered to the axis of the x axis. what is the issue ?

Hope to hear from you soon

Regards

Tino

[Rik]

Sorry for the typo (missing the UniformOutput).

If you only set the XTick property, you don't actually need to set the label. It looked like you wanted to have the label '2000' show up at x=2, so my code does that for you.

So maybe this code is what you meant?

labels = [0 2000 4000 6000 8000 10000 12000];
disp(plot(X));
set(gca, 'XTick', labels);

%this is now optional:
set(gca, 'XTickLabel', cellfun(@num2str,num2cell(labels),'UniformOutput',0);

[Tino]

Thanks for your response Rik.

Am sorry maybe you did not understand my question

I want to 0 1000, 2000, 3000, 4000, 50000, 6000

0 2000, 4000, 6000, 8000, 10,000, 12,000

The numbers down to replace the number up in the graph

I hope this is clearer. where I have 1000, I want to make it 2000 and so on

Regards

Tino

[Rik]

So where the actual x-postition is 1000 you want to have the label say 2000 etc?

[Tino]

Hi Rik

That is exactly what I mean

where it is 1000 i want it to be 2000

and where it is 2000 I want it to be 4000 etc

Thanks for your help in advance

Regards

tino

[Rik]

Then you can use this:

labels_real = [0 1000 2000 3000 4000  5000  6000];
labels_fake = [0 2000 4000 6000 8000 10000 12000];
%or just:
%labels_real=0:1000:6000;
%labels_fake=0:2000:12000;
%or even:
%labels_real=0:1000:6000;
%labels_fake=labels_real/2;

disp(plot(X));
set(gca, 'XTick', labels_real);
%this is now optional:
set(gca, 'XTickLabel', cellfun(@num2str,num2cell(labels_fake),'UniformOutput',0);

[Tino]

Thank you Rik