MATLAB: Drawing X and Y axis on 2D plot

axesplotting

Hi everyone,

I have been searching for an easy way to draw the x and y axis on a plot but cannot seem to do it. For example, if I have a plot that has range [-2 10] for x and [-200 400] for y, I would like to be able to draw a line along x = 0 and y = 0. I have looked at certain functions such as axescenter but this draws the axes in the exact center so it does not work for me. The style is great but I can't get it along the axes. Anyone have any ideas?

Best Answer

xL = xlim;
yL = ylim;
line([0 0], yL);  %x-axis
line(xL, [0 0]);  %y-axis

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MATLAB: How to change color of x and y axis by red and blue

 set(gca,'xcolor','r','ycolor','b')

MATLAB: Independent XTickLabel and YTickLabel font sizes

The documentation includes examples that use the numeric rulers (introduced in release R2015b) that are part of the axes to do this type of customization. You can also change the properties of the objects stored in the XLabel and YLabel properties of the axes.

% Sample data
x = -1:0.01:1;
y = 3*asin(x);
% Plot it and retrieve the handles of the objects we're going to manipulate
h = plot(x, y);
yL = ylabel('Abracadabra');
xL = xlabel('For demonstration purposes only', 'Color', 'r');
ax = ancestor(h, 'axes');
yrule = ax.YAxis;
% Change properties of the axes
ax.YTick = [-pi 0 pi];
ax.YTickLabel = {'-\pi','0','\pi'};
% Change properties of the ruler
yrule.FontSize = 18;
% Change properties of the label
yL.FontSize = 8;

Some of the manipulation I did (in particular changing the YTick and YTickLabel properties of the axes) I could have done via several of the objects as well. But in order to change the font size of the X and Y axes independently I need the ruler. Changing the axes FontSize using ax would change all of the X tick labels, X label, Y tick labels, and Y label.

Best Answer

Related Solutions

MATLAB: How to change color of x and y axis by red and blue

MATLAB: Independent XTickLabel and YTickLabel font sizes

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