ECEn Matlab

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===== Plots =====

Plots allow the user to graphically compare two variables together. The basic syntax is
	
plot(X , Y, S). 
	
X is an array consisting of x coordinates and Y is an array consisting of Y coordinates. S allows the user to select various line types. If you type in “help plot” in the command window you can see this section that explains the purpose of S.

{{ :plots.png?500 |}}
 From Matlab 

You can also plot multiple Xs, Ys, and Ss using the following syntax.
	
plot(X1, Y2, S1, X2, Y2, S2, Xn, Yn, Sn);

When you create a plot Matlab will display it on a figure



The following are useful commands associated with plots

To adjust the x and y axis limits
xlim( [Xmin Xmax])
ylim( [Ymin Ymax])

To write a header
text(‘insert text here’)

Create labels on the x and y axis
xlabel(‘insert label here’)
ylabel(‘insert label here’)


place multiple graphs on the same figure
hold on

create a legend
legend(string1, string2, string, ‘location’, string_of_location)
‘location’ is to indicate that you will tell matlab where to put the legend

Specify which figure to use.
figure(x);   x = 1, 2, 3 …….

ECEn Matlab

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