Exclude zero from domain.

Gurpreet Singh

2018 9 26

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Hello, I am relatively new to Matlab and would like some help. I want to plot the following program however, I see that the graph is not defined at x = 0 and y = 0. After some research I attempted the

"x = x(x~=0); and y = y(y~=0);"

command, but this still leads me to an empty graph. Any help will be appreciated. Thank you.

x=-1:0.1:1;
y=-1:0.1:1;
x = x(x~=0);
y = y(y~=0);
dx=0.1;
[x,y]=meshgrid(-1:dx:1,-1:dx:1);
u = 1./(x.^2);
v = 1./(y.^2);
quiver(x,y,u,v);
axis equal

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madhan ravi 2018-9-26

编辑：dpb 2018-9-26

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x=-1:0.1:1;
y=-1:0.1:1;
x=nonzeros(x);
y=nonzeros(y)
%y = y(y~=0);
dx=0.1;
[X,Y]=meshgrid(x,y);
u = 1./(X.^2);
v = 1./(Y.^2);
quiver(X,Y,u,v);
axis equal