0
0
MATLABdata~10 mins

Row and column vectors in MATLAB - Step-by-Step Execution

Choose your learning style9 modes available
Concept Flow - Row and column vectors
Start: Define vector
Is vector horizontal?
Row vector
Use in math
End
We start by defining a vector, then check if it is horizontal or vertical to classify it as a row or column vector, which affects how we use it in math.
Execution Sample
MATLAB
v_row = [1 2 3];
v_col = [1; 2; 3];
disp(v_row);
disp(v_col);
This code creates a row vector and a column vector, then displays both.
Execution Table
StepVariableValueActionOutput
1v_row[1 2 3]Create row vector
2v_col[1; 2; 3]Create column vector
3disp(v_row)Display row vector1 2 3
4disp(v_col)Display column vector1 2 3
5End of script
💡 All vectors created and displayed; script ends.
Variable Tracker
VariableStartAfter Step 1After Step 2Final
v_rowundefined[1 2 3][1 2 3][1 2 3]
v_colundefinedundefined[1; 2; 3][1; 2; 3]
Key Moments - 2 Insights
Why does v_row use spaces and v_col use semicolons?
In MATLAB, spaces separate elements in a row vector (horizontal), while semicolons separate rows in a column vector (vertical), as shown in steps 1 and 2 of the execution_table.
Why does disp(v_col) show elements vertically?
Because v_col is a column vector, MATLAB displays each element on a new line, as seen in step 4 of the execution_table.
Visual Quiz - 3 Questions
Test your understanding
Look at the execution_table at step 3, what is the output of disp(v_row)?
A1 2 3
B[1; 2; 3]
C1 2 3
D[1 2 3]
💡 Hint
Check the Output column in execution_table row with Step 3.
At which step is the column vector created?
AStep 2
BStep 1
CStep 3
DStep 4
💡 Hint
Look at the Action column in execution_table for vector creation.
If you replace semicolons with spaces in v_col, what changes in variable_tracker?
Av_row changes to a column vector
Bv_col becomes a row vector with values [1 2 3]
Cv_col remains a column vector
DNo change in v_col
💡 Hint
Refer to how v_row and v_col are defined in variable_tracker and execution_table steps 1 and 2.
Concept Snapshot
Row vector: horizontal, elements separated by spaces, e.g. [1 2 3]
Column vector: vertical, elements separated by semicolons, e.g. [1; 2; 3]
Use disp() to display vectors
Row and column vectors differ in shape and display
Important for matrix operations and indexing
Full Transcript
This lesson shows how to create and display row and column vectors in MATLAB. A row vector is made by listing elements separated by spaces inside square brackets, like [1 2 3]. A column vector uses semicolons to separate elements vertically, like [1; 2; 3]. The code creates both vectors and uses disp() to show them. The row vector displays elements horizontally, while the column vector displays them vertically. Understanding this difference helps with matrix math and data organization in MATLAB.