Specify Axis Limits - MATLAB & Simulink (original) (raw)
You can control where data appears in the axes by setting the _x_-axis, _y_-axis, and _z_-axis limits. You also can change where the _x_-axis and _y_-axis lines appear (2-D plots only) or reverse the direction of increasing values along each axis.
Change Axis Limits
Create a line plot. Specify the axis limits using the xlim and ylim functions. For 3-D plots, use the zlim function. Pass the functions a two-element vector of the form [min max].
x = linspace(-10,10,200); y = sin(4*x)./exp(x); plot(x,y) xlim([0 10]) ylim([-0.4 0.8])
Use Semiautomatic Axis Limits
Set the maximum _x_-axis limit to 0 and the minimum _y_-axis limit to -1. Let MATLAB choose the other limits. For an automatically calculated minimum or maximum limit, use -inf or inf, respectively.
[X,Y,Z] = peaks; surf(X,Y,Z) xlabel('x-axis') ylabel('y-axis') xlim([-inf 0]) ylim([-1 inf])
Revert Back to Default Limits
Create a mesh plot and change the axis limits. Then revert back to the default limits.
[X,Y,Z] = peaks; mesh(X,Y,Z) xlim([-2 2]) ylim([-2 2]) zlim([-5 5])
xlim auto ylim auto zlim auto
Reverse Axis Direction
Control the direction of increasing values along the _x_-axis and _y_-axis by setting the XDir and YDir properties of the Axes object. Set these properties to either 'reverse' or 'normal' (the default). Use the gca command to access the Axes object.
stem(1:10) ax = gca; ax.XDir = 'reverse'; ax.YDir = 'reverse';
Display Axis Lines Through Origin
By default, the _x_-axis and _y_-axis appear along the outer bounds of the axes. Change the location of the axis lines so that they cross at the origin point (0,0) by setting the XAxisLocation and YAxisLocation properties of the Axes object. Set XAxisLocation to either 'top', 'bottom', or 'origin'. Set YAxisLocation to either 'left', 'right', or 'origin'. These properties only apply to axes in a 2-D view.
x = linspace(-5,5); y = sin(x); plot(x,y)
ax = gca; ax.XAxisLocation = 'origin'; ax.YAxisLocation = 'origin';
Remove the axes box outline.
