Matlab graphing/plotting problem

  • MATLAB
  • Thread starter sara_87
  • Start date
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Main Question or Discussion Point

1. Homework Statement

i have 4 points,
(8,0)
(4,-4)
(-4,4)
(-8,0)
i want to draw a graph of this on matlab so that the first to points are joined, the last two points are joined, but i want it on the same graph.
how do i do this? what's the command?
thank you
 

Answers and Replies

1
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Alright, so you're learning to use Matlab... :)
Your first two coordinates are: (8,0) and (4,-4)
These coordinates are in the form (X,Y).
so make an array with your X data and an array with your Y data like this:
X1=[8 4]; Y1=[0 -4];
Then get Matlab to plot it by using the plot command:
plot(X1,Y1)

Do the same for the other pair of coordinates...

Altogether, it will look like this: (just cut and paste.. and it should work)

%start
X1=[8 4]; Y1=[0 -4];
X2=[-4 -8]; Y2=[4 0];

plot(X1,Y1,...
X2,Y2);
%end
 

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