How to Customize Graphs on Octave

In this tutorial, I will show you how to customize graphs on Octave by adding a title, a legend, axis labels, a grid, and more.

Let's begin with a practical example.

Before creating a graph, I recommend clearing the screen using the clf function.

>> clf

Next, create an array with x values.

>> x = linspace(1,100,100);

Then, create an array with y values.

>> y1=x.^2;

>> y2=x.^2.2;

All arrays are made up of 100 elements.

To add a visible grid, type grid on

>> grid on

A grid will appear on the graph.

Nota. To remove the grid, type "grid off."

To draw the graph, use the plot() function.

In this case, we have a multiple graph with two functions.

>> plot(x,y1, x,y2)

The graph will be displayed as follows.

To add labels to the axes, use the xlabel and ylabel" commands.

>> xlabel('speed')

>> ylabel('time')

The labels will appear immediately on the horizontal (x) and vertical (y) axes.

Now, add a title to the graph using the title() function.

>> title('this is the title')

The title will be displayed in bold at the top of the graph.

Finally, display a legend on the margins of the graph using the legend() function.

>> legend('car 1', 'car 2')

The legend will be added in the top-right corner.

With these tools, you can customize your graphs on Octave.

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