In MATLAB figure, how to change the X or Y axis ticks or labels?

A default case is the following where I plot 100 random numbers

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var=rand(1,100);
figure; plot(1:100,var,'--rs');
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In X axis, the labels are placed 10 places apart.....0....10....20....30..... like that....If I want to have labels 2 places apart  1...3...5....7 till 100 how may I do it?


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set(gca,'XTick',1:10:100) % Here gca refers to the handler of the current figure's axis

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Now, try to do the same in Y-axis! Share your result :)

How to save/print MATLAB figure in a file?

Imagine I want to print/save a matlab figure into disk. May be I want to save it in PNG format. How do I do that?
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file_handler=figure;
plot(randn(10,1));
print(file_handler,'-dpng', 'my_file_name.png');
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Check your current folder. A file named my_file_name.png should be there!

How to print variable value in title of a matlab figure?

Imagine my MATLAB figure has a title where I want to print the value of a variable. How can I do that ?


for var=1:3
figure;
plot(randn(10,1)); title(['rand number=: ' num2str(var) ]);
end
%%%%%%%%%%%%%%%%%%Out Put%%%%%%%%%%%%%%%%%%%%%%%%%%

Multiple Legend in plot/subplot

I needed multiple legend on a plot for multiple data where data sizes were different. If try classical legend you get the following


    figure
  p1=plot(I_test(:,:,1),I_true(:,:,1),'r.');
  hold on
  p2=plot(RGB_test(:,1),RGB_ref(:,1),'g.');
    legend( 'true','calculated');
It does not give what I want !! Therefore.....continue reading..

Instead try the following to have different legend

 figure
  p1=plot(I_test(:,:,1),I_true(:,:,1),'r.');
  hold on
  p2=plot(RGB_test(:,1),RGB_ref(:,1),'g.');
  legend([p1(1) p2(end)], 'true','calculated');

Legend in Subplot

Acknowledgement : here
    subplot(2,2,1);
     ph1=plot(rand(10,2),'s-');
     subplot(2,2,3:4);
     ph2=plot(rand(10,3),'o-');
     sh=subplot(2,2,2);
     p=get(sh,'position');
     lh=legend(sh,[ph1;ph2]);
     set(lh,'position',p);
     axis(sh,'off');