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For more complex calculations we have to resort to maths software tools as is the case of this MATLAB, one of the most popular scientific programs among students and engineers all over the world. But if you've come here with the intention to find out how to download it to your PC, you probably know what it's all about. Matlab is the true standard for scientific computing, used globally in virtually all Neuroscience and Cognitive Psychology labs. This is the first book to systematically introduce Matlab in a problem oriented, data focused approach.

MATLAB is the language of technical computing at leading engineering and science companies and the standard software at more than 5000 universities worldwide.

The MATLAB Runtime is a standalone set of shared libraries that enables the execution of compiled MATLAB applications ...

MATLAB (Matrix Laboratory) is a simulation package for engineering applications.

MATLAB (Matrix Laboratory) is a simulation package for engineering applications.

MATLAB is a programming environment for algorithm development, data analysis, visualization, and numerical computation.

After reading the MATLAB plots topic, you will understand how to create plots, and you will know how to use various plot commands in MATLAB.

Plots are useful in providing information in picture view and MATLAB provides the facility for creating a plot using plot command.

plot Command

The plot command in MATLAB help to create two-dimensional plots. The general form of the command is:

where

• x and y both are vectors.
• The table below shows the following line specifiers which are Optional.

Examples

Program (1): To plot the curve for x and y values are given below, in MATLAB.

x=(1,2,3,4); y=(2,4,6,8)

MATLAB VIEW – Program (1):

Create a script file in MATLAB and type the following code –

MATLAB VIEW – Output (1):

Program (2): To plot curve with a line specifiers as a dashed red line for x and y values are given below, in MATLAB.

x = (1,2,3,4); y = (2,4,6,8).

MATLAB VIEW – Program (2):

Create a script file in MATLAB and type the following code –

MATLAB VIEW – Output (2):

In the above plot x vs. y, with a dashed red line.

Multiple graphs using plot command

The example below will show you how to show multiple graphs in the same plot using plot command in MATLAB.

Examples

Matlab For Engineers

Program (1): To show curve in same plot for functions f(x) and g(x) is given below in MATLAB.

f(x) = x; g(x) = 2x; 0 ≤ x ≤ 10

Matlab For Windows 10

MATLAB VIEW – Program (1):

Create a script file in MATLAB and type the following code –

MATLAB VIEW – Output (1):

In the above figure f vs. x and g vs. x, all in the same plot.

hold on and hold off command

The example below will show you how to show multiple graphs in the same plot by using hold on and hold off command in MATLAB.

Example

Program (1): To show the curve for functions f(x) and g(x) in the same plot is given below, in MATLAB.

f(x)=x; g(x)=2x; 0≤x≤10

MATLAB VIEW – Program (1):

Create a script file in MATLAB and type the following code –

MATLAB VIEW – Output (1):

MATLAB – Plot formatting Using Commands:

The formatting commands are entered after the plot command. In MATLAB the various formatting commands are:

(1). The xlabel and ylabel commands:

The xlabel command put a label on the x-axis and ylabel command put a label on y-axis of the plot.

The general form of the command is:

(2). The title command:

This command is used to put the title on the plot. The general form of the command is:

(3). The axis command:

This command adds an axis to the plot. The general form of the command is:

(4). The grid command:

This command adds the grid to the plot. The general form of the command is:

Example

Program (1): To plot sine wave having following properties given below, in MATLAB.

f(x) = sin(x); 0 ≤ x ≤ 2π; Properties: Sine wave: axis and grid present, x-axis label “time”, y-axis label “amplitude”, title label” sine wave”.

MATLAB VIEW – Program (1):

Create a script file and type the following code –

MATLAB VIEW – Output (1):