Syntax:

xlabel(‘text’)

Example:

The statement to plot sine wave in MATLAB is given as

x=0:0.1:2*pi; 
y=sin(x); 
plot(x,y)

Output:

Adding x-axis label “time”, to the plot,

x=0:0.1:2*pi; 
y=sin(x); 
plot(x,y) 
xlabel('time')

Output:

The post MATLAB xlabel appeared first on ElectricalWorkbook.

Syntax:

ylabel(‘text as string’)

Example:

The statement to plot a sine wave in MATLAB is given as

x=0:0.1:2*pi; 
y=sin(x); 
plot(x,y)

Output:

Adding y-axis label “amplitude”, to the plot,

x=0:0.1:2*pi; 
y=sin(x); 
plot(x,y) 
ylabel('amplitude')

Output:

The post MATLAB ylabel appeared first on ElectricalWorkbook.

Syntax:

title(‘text’)

Example:

The statement to plot a sine wave in MATLAB is given as

x=0:0.1:2*pi; 
y=sin(x); 
plot(x,y)

Output:

Adding title label” sine wave” to the plot,

x=0:0.1:2*pi; 
y=sin(x); 
plot(x,y)
title('sine wave')

The post MATLAB title appeared first on ElectricalWorkbook.

Syntax:

grid on 
grid off

Here,

• grid on command, adds grid to the plot
• grid off command to remove grid from the plot

Example:

The statement to plot a sine wave in MATLAB is given as

x=0:0.1:2*pi; 
y=sin(x); 
plot(x,y)

Output:

Adding the grid to the plot,

x=0:0.1:2*pi; 
y=sin(x); 
plot(x,y)
grid on

Removing the grid from the plot,

x=0:0.1:2*pi; 
y=sin(x); 
plot(x,y)
grid on
grid off

Output:

The post MATLAB grid appeared first on ElectricalWorkbook.

Syntax:

ones(n)
ones(n,m)

• For ones(n) represents n columns and n rows.
• For ones(n,m) represents n rows and m columns.

Example: To create 2×2 ones matrix.

ones(2)

Output:

ans =

1 1
1 1

Example: To create 2×3 ones matrix.

ones(2,3)

Output:

ans =

     1     1     1
     1     1     1

The post MATLAB ones appeared first on ElectricalWorkbook.

Syntax:

length(n)

• n can be a vector or matrix.

Example: To find the number of elements in a vector.

n=[1,2,3,56];

length(n)

Output:

ans =

4

Example: To find the number of elements present in each column the matrix.

n=[1,2,3;3,2,1;4,5,1;23,2,1]

length(n)

Output:

n =

1   2   3
3   2   1
4   5   1
23  2   1


ans =

4

The post MATLAB length appeared first on ElectricalWorkbook.

Syntax:

reshape(n,a,b)

• n is a matrix or vector.
• a is numbers of rows.
• b is numbers of columns.

Example: To reshape a vector into the matrix.

n=[1,2,3,56]

reshape(n,2,2)

Output:

n =

1  2  3  56


ans =

1   3
2   56

Example: To reshape a matrix into another matrix.

n=[2,3;2,1;5,1]

reshape(n,3,2)

Output:

n =

     2     3
     2     1
     5     1


ans =

     2     5     1
     2     3     1

The post MATLAB Reshape appeared first on ElectricalWorkbook.

Syntax:

linspace(xf,xl,n)

• xf is the first element of the row vector.
• xl is the last element of the row vector.
• n is the number of elements in the row vector.

Example: To create the row vector having equally spaced elements.

linspace(0,8,6)

Output:

ans =

0 1.6000 3.2000 4.8000 6.4000 8.0000

The post MATLAB linspace appeared first on ElectricalWorkbook.

Syntax:

diag(n)

• n can be a vector or matrix.

Example: To create a 2×2 diagonal matrix having diagonal elements as 1 and 2.

n=[1,2];
diag(n)

Output:

ans =

1 0
0 2

Example: To create a column vector of diagonal elements from the given Matrix.

n=[1,2,3;3,2,1;4,5,1]

v=diag(n)

Output:

n =

     1     2     3
     3     2     1
     4     5     1


v =

     1
     2
     1

The post MATLAB diagonal matrix appeared first on ElectricalWorkbook.

Syntax:

mean(n)

• n can be a vector or matrix.

Example: To calculate the mean of vector elements.

n=[1,2]; 
mean(n)

Output:

ans =

1.5000

Example: To create a matrix and calculates the mean of each column.

n=[1,2,3;3,2,1;4,5,1] 

v=mean(n)

Output:

n =

     1     2     3
     3     2     1
     4     5     1


v =

    2.6667    3.0000    1.6667

Explanation:

• 2.6667, 3.0000 and 1.6667 is the mean value of the first, second and third column elements respectively.

The post MATLAB mean appeared first on ElectricalWorkbook.