I am plotting (x,y) coordinates in a simple plot and the plotted values lies in 1st Quadrant.However, I want to see all the 4 quadrants , how to customize it?

Lets say my cordinates are as follows x= [0 1 2 3 4 5] y= [0 1 2 3 4 5]

However, i want to set my axis from : x= (-20 ,20) y= (-20, 20) so that I can just see all the 4 quadrants , while my plotted values lies in first quadrant.

Answer 1

[Birdman]

Try this:

x=0:5;y=0:5;
plot(x,y);grid on;
set(gca,'XLim',[-20 20]);
set(gca,'YLim',[-20 20]);

[Sagar Saxena]

hi , so the (x,y) mapped pairs that i need to plot are : x1= [0 0 0 0 0] y1= [2 4 6 8 10] x2= [1 2 3 4 5] y2= [3 5 7 9 11] so , right now I am doing this: plot(x1,y1,'o',x2, Y2, 'x')

So this sets my axis limits based on above values of x and y but I need to see all 4 quadrants(with axis in centre) So how do I do that.

Thanks!

[Sagar Saxena]

So here is my code:

X=  [0 0 0 0 0 ];
Y1= [0 0.13  0.26  0.39 0.52];
X2= [0 0.11 0.22 0.33 0.44];
Y2= [0 0.07 0.13 0.19 0.25];

plot(X,Y1,'o-', X2,Y2,'x-','MarkerSize',8, 'Linewidth',1)
axis square;
set(gca,'fontsize',12)

[Walter Roberson]

Continue on with

xlim([-20 20]); ylim([-20 20])

... but for that range of values I would suggest

xlim([-2 2]); ylim([-2 2])

[Sagar Saxena]

It worked.I had it before as well but the sequence was wrong. Thanks!

Answer 2

[Walter Roberson]

xlim([-20 20]);
ylim([-20 20]);