matlab axis | Code Ease (2024)

Answered on: Thursday 16 May, 2024 / Duration: 10 min read

Programming Language: Matlab , Popularity :6/10

Solution 1:

In MATLAB, the axis function is used to set the limits for the x and y axes of a plot. This function takes in a vector of four values [xmin, xmax, ymin, ymax] which specify the minimum and maximum values for the x and y axes respectively.

Here is an example code snippet that demonstrates how to use the axis function in MATLAB:

matlab
% Create a simple plot
x = 0:0.1:2*pi;
y = sin(x);
plot(x, y);
title('Sine Function');
% Set custom axis limits
axis([0, 2*pi, -1, 1]);

In this code snippet, we first create a plot of the sine function over the interval [0, 2π]. We then use the axis function to set custom axis limits such that the x-axis ranges from 0 to 2π and the y-axis ranges from -1 to 1.

When you run this code, you will see a plot of the sine function with the specified axis limits.

![Sine Function Plot with Custom Axis Limits](https://i.imgur.com/5e4JjvM.png)

Solution 2:

Axis in MATLAB

The axis function in MATLAB allows you to specify the limits and other properties of the axes in a plot. It can be used to set the range of the x and y axes, as well as to control the appearance of the axes labels, ticks, and grid lines.

Syntax


axis([xmin xmax ymin ymax])

where:

* xmin and xmax are the minimum and maximum values on the x-axis
* ymin and ymax are the minimum and maximum values on the y-axis

Code Examples

Example 1: Set the Range of the Axes

matlab
% Plot the function y = sin(x)
x = linspace(0, 2*pi, 100);
y = sin(x);
plot(x, y);
% Set the x-axis range to [0, 4]
axis([0 4 -1 1]);

Output:

[Image of a plot with the x-axis range set to [0, 4]]

Example 2: Control the Appearance of the Axes Labels

matlab
% Plot the function y = sin(x)
x = linspace(0, 2*pi, 100);
y = sin(x);
plot(x, y);
% Set the x-axis label to 'Angle (radians)'
xlabel('Angle (radians)');
% Set the y-axis label to 'Amplitude'
ylabel('Amplitude');

Output:

[Image of a plot with custom axis labels]

Example 3: Add Grid Lines and Ticks

matlab
% Plot the function y = sin(x)
x = linspace(0, 2*pi, 100);
y = sin(x);
plot(x, y);
% Add grid lines to the plot
grid on;
% Set the x-axis tick marks to [0, pi/2, pi, 3*pi/2, 2*pi]
set(gca, 'XTick', [0 pi/2 pi 3*pi/2 2*pi]);

Output:

[Image of a plot with grid lines and custom x-axis tick marks]

Additional Options

In addition to the basic syntax, the axis function has a number of additional options that allow you to further customize the appearance of the axes. These options are specified as key-value pairs, such as:


axis(..., 'Option1', Value1, 'Option2', Value2, ...);

Some common options include:

* 'XLim' and 'YLim': Set the minimum and maximum values on the x and y axes
* 'XLabel' and 'YLabel': Set the labels for the x and y axes
* 'GridLineStyle' and 'GridLineWidth': Control the appearance of the grid lines
* 'TickLength' and 'TickDir': Control the length and direction of the tick marks

For a complete list of options, refer to the MATLAB documentation for the axis function.

Solution 3:

In MATLAB, the axis function is used to modify the appearance of the current axes in a figure. The function can be used to change various properties of the axes, such as the limits of the x and y axes, the aspect ratio, and the tick marks. Here are some examples of how to use the axis function:

1. Setting the axis limits:

To set the limits of the x and y axes, you can use the axis function with four arguments:

axis([xmin xmax ymin ymax])

For example, the following code will set the x axis limits to be [0,10] and the y axis limits to be [0,50]:


x = 0:0.1:10;
y = sin(x);
plot(x,y)
axis([0 10 0 50])

![output image](https://i.imgur.com/2hG87LK.png)

2. Setting the aspect ratio: