MATLAB: How to change the axis length in a plot

axisscaleticklabelticks

In the figure, the x axis for the first subplot has only 3 elements. How can I set this feature for all the other subplots? For each one will only have 3 ticks insted of variate x axis elements. Thank you

Best Answer

You can change the axis labels in each subplot individually:

x = linspace(2, 3);
y = sin(2*pi*(x-2)).^2;
figure(1)
subplot(2,1,1)
plot(x, y)                                          % Default Axis Tick Labels
title('Subplot 1')
sp2 = subplot(2,1,2);
plot(x, y)
xt = get(sp2, 'XTick');                             % Current 'XTick' Values For Subplot #2
xtn = linspace(min(xt), max(xt), 3);                % Define New 'XTick' Values for Subplot #2
set(sp2, 'XTick', xtn)                              % Set New 'XTick' Values for Subplot #2
title('Subplot 2')

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MATLAB: Subplot change size of xtick ytick

set(gca, 'XTick', 0.5:0.1:1, 'YTick', 0:0.2:1);
set(gca, 'FontSize', 18)
axis(gca,'square');
legend('3DOP', 'MCG-D', 'MCG', 'EB', 'SS', 'BING');
xlabel('Intersection Over Union','Fontsize',12);
ylabel('Recall','Fontsize',12);

MATLAB: How to add XTickLabels in a subplot (2014a)

I think that part of the problem is that when the code calls axes or xlabel it applies the ticks or labels to the current axis which may not be the one corresponding to your subplot. I took the middle chunk of code from above (starting at %% title and labels ok, no tick labels on subplot1) and put it in a test.m file and stepped through each line and observed the changes to the subplots as the line was executed. It may be interesting to do the same.

Now in order to apply the ticks and labels to your choice of subplot, you need the handle to the axis of that subplot. That is easy:

 h = subplot(3,3,1);

Then to set the title, labels and ticks, do something like

 title(h,'subplot (1,1)');
 xlabel(h,'x');
 ylabel(h,'y');
 set(h,'XTickLabel',{'a','b','c'});

And repeat for the other subplots. Try the above and see what happens!

Best Answer

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MATLAB: Subplot change size of xtick ytick

MATLAB: How to add XTickLabels in a subplot (2014a)

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