STEM Plots in Octave

In this lesson, I will explain how to create a STEM plot on Octave.

What is a STEM plot? It is a plot where the points of a function are represented by equidistant stems. This way, a continuous function is discretely represented. Here is a practical example of a STEM graph.
Example of a STEM plot:

Let me give you a practical example.

Create an array "x" of the independent variable with values from 1 to 20.

>> x=linspace(1,20,20);

Then create an array "y" for the function y=x^2.

>> y=x.^2

Now, plot the function using the function plot().

>> plot(x,y)

The function is drawn on the Cartesian diagram continuously.

Example of a continuous function:

To represent the same function in a STEM plot, use the command stem(x,y) or stem(y).

>> stem(x,y)

This command draws the function using a STEM plot.

Example of a STEM plot:

It is an alternative way to represent the same function.

If this Nigiara lesson has helped you, keep following us.