ELEC 241 Lab

Plotting X vs Y

One way to plot one variable versus another is with the Plot() function of Matlab.

Step 1:

 Start Matlab by double clicking on the Matlab icon on the desktop.

Step 2:

 Enter the x and y values as vectors. Note that Matlab plots in the order that the points are given, so be careful that each value in the x and y vector corresponds with the next point.

>> x=[1 2 3 4 5];
>> y=[1 4 9 16 25];


Step 3:

 Type "plot(x,y)".

Step 4:

 To title the plot, type "title('Y AXIS VS X AXIS')". To add titles the x and y axes, use "xlabel('X AXIS LABEL')" and "ylabel('Y AXIS LABEL')". Note that you can use underscores to create subscripts.

Step 5:

 To save the matlab plot, click "file" and then "save as". Make sure to save as a JPG.