MATLAB: How to change the values on the axis of a graph

axisgraphs

I need to change both axes on a graph. Currently both are set to 0 10 20 30, but I need to change them to -20 -15 -10 -5 …. 35 40.

I have tried using axis([-20 40 -20 40]) but this leads to -20 -10 0 10 20 30 40. How can I change this to give intervals of 5 on the axis?

Thank you!

Best Answer

Try this:

figure
plot((0:30), rand(1,31))
xt = get(gca, 'XTick');
strc = compose('%d', -20:5:40);
xtv = linspace(min(xt), max(xt), numel(strc));
set(gca, 'XTick',xtv, 'XTickLabel',strc)

Related Solutions

MATLAB: How to change the axis length in a plot

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')

MATLAB: How to specify the X and Y ticklable

Replace your current set calls:

set(gca,'XTickLabel',{vec})
set(gca,'YTickLabel',{vec})

with these assignments:

xt = get(gca, 'XTick');
xtv = linspace(min(xt), max(xt), numel(vec));
yt = get(gca, 'YTick');
ytv = linspace(min(yt), max(yt), numel(vec));
set(gca, 'XTick',xtv, 'XTickLabel',vec, 'YTick',ytv, 'YTickLabel',vec)

That should work.

Best Answer

Related Solutions

MATLAB: How to change the axis length in a plot

MATLAB: How to specify the X and Y ticklable

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