What am I doing wrong here I keep getting a plot with either to many things on it or not enough all I want is a plot with two y axis and an x axis

theta = 46.97;
theta2= 55;

v1= 13.5;
v2= 16.05;

x= (0:0.1:2.3);
x2= (0:0.1:5.14);

y= x*tan(theta)-(g/(2*v1.^2*cos(theta).^2))*x.^2;
y1= x2*tan(theta2)-(g/(2*v2.^2*cos(theta2).^2))*x2.^2;

yyaxis right
plot(x,y)
plot(x2,y1)
hold on

[Honore Lopaka]

g= 32.2

Answer 1

[Alan Stevens]

Like this

g = 9.81;
theta = 46.97;
theta2= 55;

v1= 13.5;
v2= 16.05;

x= (0:0.1:2.3);
x2= (0:0.1:5.14);

y= x*tan(theta)-(g/(2*v1.^2*cos(theta).^2))*x.^2;
y1= x2*tan(theta2)-(g/(2*v2.^2*cos(theta2).^2))*x2.^2;

plotyy(x,y,x2,y1),grid

[Honore Lopaka]

did not work

[Alan Stevens]

It worked for me! However, an alternative is

g = 32.2;
theta = 46.97;
theta2= 55;

v1= 13.5;
v2= 16.05;

x= (0:0.1:2.3);
x2= (0:0.1:5.14);

y= x*tan(theta)-(g/(2*v1.^2*cos(theta).^2))*x.^2;
y1= x2*tan(theta2)-(g/(2*v2.^2*cos(theta2).^2))*x2.^2;

plot(x,y),grid
ylabel('y')
yyaxis right
plot(x2,y1)
ylabel('y1')
xlabel('x')

This results in