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ylim

Set or query y-axis limits

Syntax

  • ylim(limits)
  • ylim auto
  • ylim manual
  • yl = ylim
  • m = ylim('mode')
  • ___ = ylim(ax,___)

Description

ylim(limits) sets the y-axis limits for the current axes. Specify limits as a two-element vector of the form [ymin ymax], where ymax is a numeric value greater than ymin.

ylim auto lets the axes choose the y-axis limits. The axes chooses limits that span the range of the plotted data. This command sets the YLimMode property for the axes to 'auto'.

ylim manual freezes the limits at the current values. Use this option if you want to retain the current limits when adding new data to the axes using the hold on command. This command sets the YLimMode property for the axes to 'manual'.

yl = ylim returns a two-element vector containing the current limits.

m = ylim('mode') returns the current value of the limits mode, which is either 'auto' or 'manual'. By default, the mode is automatic unless you specify limits or set the mode to manual.

___ = ylim(ax,___) uses the axes specified by ax instead of the current axes. Specify an axes with any of the input or output arguments in previous syntaxes. Use single quotes around input arguments that are character strings, for example, ylim(ax,'auto') and ylim(ax,'manual').

Examples

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Set y-Axis Limits

Plot a line and set the y-axis limits to range from -2 to 2.

x = linspace(0,10);
y = sin(x);
plot(x,y)
ylim([-2 2])

Set y-Axis Limits for Specific Axes

Create a figure with two subplots and plot the same data in each subplot. Set the y-axis limits for the bottom subplot.

x = linspace(0,10,1000);
y = sin(10*x).*exp(.5*x);
ax1 = subplot(2,1,1);
plot(x,y)

ax2 = subplot(2,1,2);
plot(x,y)
ylim(ax2,[-10 10])

Maintain Current y-Axis Limits

Use manual mode to maintain the current y-axis limits when you add more plots to the axes.

First, plot a line.

x = linspace(0,10);
y = sin(x);
plot(x,y)

Set the y-axis limits mode to manual so that the limits to not change. Use hold on to add a second plot to the axes.

ylim manual
hold on
y2 = 2*sin(x);
plot(x,y2)
hold off

The y-axis limits do not update to incorporate the new plot.

Switch back to automatically updated limits by resetting the mode to automatic.

ylim auto

Return y-Axis Limits

Create a scatter plot of random data. Return the values of the y-axis limits.

x = randn(50,1);
y = randn(50,1);
scatter(x,y)

yl =  ylim
yl =

    -2     3

Input Arguments

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limits — Minimum and maximum limitstwo-element vector

Minimum and maximum limits, specified as a two-element vector of the form [ymin ymax]. Specifying the y-axis limits sets the y-axis limits mode to manual. The YLim and YLimMode properties for the corresponding axes store the y-axis limits and the limits mode, respectively.

Changing the y-axis limits can cause other limits to change, unless their corresponding mode properties are set to manual.

Example: [0 1]

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64

ax — Axes objectaxes object

Axes object. If you do not specify an axes, then ylim sets the limits for the current axes (gca).

Output Arguments

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yl — Current limitstwo-element vector

Current limits, returned as a two-element vector of the form [ymin ymax].

Querying the limits returns the YLim property value for the corresponding axes.

m — Current limits mode'auto' | 'manual'

Current limits mode, returned as one of these values:

  • 'auto' — The limits update to reflect changes in the data.

  • 'manual' — The limits do not update to reflect changes in the data.

Querying the y-axis limits mode returns YLimMode property value for the corresponding axes.

See Also

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Introduced before R2006a

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