After starting MATLAB you can see a command window, here you can write basic commands, some commands are given below:
>> x=[1 2 3 4 5]
x =
1 2 3 4 5
>> y=5*x
y =
5 10 15 20 25
>> y1=max(y)
y1 =
25
>> [y1,y2]=may y
[y1,y2]=may y
|
Error: Unexpected MATLAB expression.
>> [y1,y2]=max y
[y1,y2]=max y
|
Error: Unexpected MATLAB expression.
>> [y1,y2]=max(y)
y1 =
25
y2 =
5
>> [y1,y2]=max(y1)
y1 =
25
y2 =
1
>> x=[1 2 3 4 6 5 7 8 9.9 1 8 9 5 2 3 4]
x =
Columns 1 through 9
1.0000 2.0000 3.0000 4.0000 6.0000 5.0000 7.0000 8.0000 9.9000
Columns 10 through 16
1.0000 8.0000 9.0000 5.0000 2.0000 3.0000 4.0000
>> y33=3.5>x
y33 =
Columns 1 through 15
1 1 1 0 0 0 0 0 0 1 0 0 0 1 1
Column 16
0
>>
>> y5=x(1:4)
y5 =
1 2 3 4
>> y5=x(4:1)
y5 =
Empty matrix: 1-by-0
>>
>> a=1:5
a =
1 2 3 4 5
>> x=1:2:10
x =
1 3 5 7 9
>> x=1:2:12
x =
1 3 5 7 9 11
>> x=1:2:20
x =
1 3 5 7 9 11 13 15 17 19
>> g=1 2 3;4 5 6;7 8 9
g=1 2 3;4 5 6;7 8 9
|
Error: Unexpected MATLAB expression.
>> g=[1 2 3;4 5 6;7 8 9]
g =
1 2 3
4 5 6
7 8 9
>> g(:,3)
ans =
3
6
9
>> g(,:3)
g(,:3)
|
Error: Expression or statement is incorrect--possibly unbalanced (, {, or [.
>> g(:,3)
ans =
3
6
9
>> g(3:,)
g(3:,)
|
Error: Expression or statement is incorrect--possibly unbalanced (, {, or [.
>> g(3,:)
ans =
7 8 9
>> g(:,2)
ans =
2
5
8
>> g(:,1)
ans =
1
4
7
>> g(1,:)
ans =
1 2 3
>> g(2,:)
ans =
4 5 6
>> p=1 2 3 4 5
p=1 2 3 4 5
|
Error: Unexpected MATLAB expression.
>> p=1 2 3 4 5
p=1 2 3 4 5
|
Error: Unexpected MATLAB expression.
>> p=[1 2 3 4 5]
p =
1 2 3 4 5
>> p'=
p'=
|
Error: The expression to the left of the equals sign is not a valid target for an
assignment.
>> p'
ans =
1
2
3
4
5
>> g=[1 2 3;4 5 6;7 8 9]
g =
1 2 3
4 5 6
7 8 9
>> g'
ans =
1 4 7
2 5 8
3 6 9
>> eye(3)
ans =
1 0 0
0 1 0
0 0 1
>> eye(1)
ans =
1
>> eye(2)
ans =
1 0
0 1
>> eye(4)
ans =
1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 1
>> eye(4,5)
ans =
1 0 0 0 0
0 1 0 0 0
0 0 1 0 0
0 0 0 1 0
>> eye(5,4)
ans =
1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 1
0 0 0 0
>> z=[1 2 4 5 6]
z =
1 2 4 5 6
>> diag(x)
ans =
1 0 0 0 0 0 0 0 0 0
0 3 0 0 0 0 0 0 0 0
0 0 5 0 0 0 0 0 0 0
0 0 0 7 0 0 0 0 0 0
0 0 0 0 9 0 0 0 0 0
0 0 0 0 0 11 0 0 0 0
0 0 0 0 0 0 13 0 0 0
0 0 0 0 0 0 0 15 0 0
0 0 0 0 0 0 0 0 17 0
0 0 0 0 0 0 0 0 0 19
>> rand(1,5)
ans =
0.8147 0.9058 0.1270 0.9134 0.6324
>> rand(1,6)
ans =
0.0975 0.2785 0.5469 0.9575 0.9649 0.1576
>> randn(1,7)
ans =
3.0349 0.7254 -0.0631 0.7147 -0.2050 -0.1241 1.4897
>> randi(1,7)
ans =
1 1 1 1 1 1 1
1 1 1 1 1 1 1
1 1 1 1 1 1 1
1 1 1 1 1 1 1
1 1 1 1 1 1 1
1 1 1 1 1 1 1
1 1 1 1 1 1 1
>> randi(3,3)
ans =
1 3 1
1 1 3
1 3 2
>> randi([1,20],3,3)
ans =
4 10 12
6 8 11
13 17 19
>> h=randi([0,255],8,8)
h =
73 199 203 191 255 222 67 159
193 239 79 115 20 21 37 89
192 33 135 21 113 102 34 131
97 145 42 58 27 66 222 102
145 120 154 233 246 204 148 19
19 3 67 39 1 110 140 61
13 86 167 211 198 233 37 31
135 41 176 137 209 46 218 47
>> image(y)
>>
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