MATLAB COMMANDS

imread Command and imshow Command:-

i = imread('C:\Users\user\Downloads\hello.jpg')

imshow(i)

Output:

figure,imshow Command:-

i = imread('C:\Users\user\Downloads\hello.jpg')

imshow(i)

k = imread('coins.png')

figure,imshow(k)

Output :-

subplot Command :-

i = imread('C:\Users\user\Pictures\5.jpg')

subPlot(2,2,3),imshow(i);

k = imread('C:\Users\user\Pictures\6.jpg')

subPlot(2,2,1),imshow(k)

j = imread('C:\Users\user\Pictures\7.jpg');

subPlot(2,2,2),imshow(j);

l = imread('C:\Users\user\Pictures\8.jpg');

subPlot(2,2,4),imshow(l);

Output:-

Vectors and Matrix:

·         Matrix

A= [5 6 7; 1 2 3; 7 4 1]

Output:

                         A =     5     6     7

                                    1     2     3

                                    7     4     1

·         Row vectors

r = [4 5 2 1]

Output:

r =   4     5     2     1

·         Column vector:

j = [1; 8; 7; 4]

Output:

j =        1

                                    8

                                    7

                                    4

·         Transpose vector:

j = [1; 8; 7; 4]

T = j'

Output:

j =   1

                                8

                                7

        4

T =   1     8     7     4

·         Printing 0 to 20 numbers with interval of 3

 k = [0:3:20]

0utput:

k = 0     3     6     9    12    15    18

·         Printing row of matrix

       A=[5 6 7 ; 1 2 3 ; 7 4 1]

       A(1,:)

Output

A =

     5     6     7

     1     2     3

     7     4     1

ans =

     5     6     7

·         Addition and substraction of matrix

A=[5 6 7 ; 1 2 3 ; 7 4 1]

B = [A A;A+6 A-2]

Output:

A =

     5     6     7

     1     2     3

     7     4     1

B =

     5       6      7        5     6     7

     1      2      3        1     2     3

     7      4      1        7     4     1

    11    12    13     3     4     5

     7       8      9     -1     0     1

    13    10     7      5     2    -1