How would you call this function?

function robot_travel(V,w)
%Known Values a,r
%inputs V,w
a=13.5
w=10;%Unknown Value
r=10;%Unknown Value
tht=45;%Degree Theta Inital Rotation

Vr=((2*V)+(w*a))/(2*r);
Vl=((2*V)-(w*a))/(2*r);
xdt=r/2*(Vr+Vl)*cosd(tht);
ydt=r/2*(Vr+Vl)*sind(tht);
thtdt=r/2*(Vr-Vl);%THETA Value Unknown how it effects
axis([-100 100 -100 100])
square=[1 -1 1 -1;-1 1 1 -1];
plot(square(1,:),square(2,:),'*b')
n=50;

xdt=linspace(0,xdt,n);%Increments X and Y so graph can animate
ydt=linspace(0,ydt,n);
for i=1:n
plot(xdt(i)+square(1,:),ydt(i)+square(2,:),'*r')%Plots the change in square postion due to change in x and y
axis([-100 100 -100 100])
pause(.1)
end
hold on
plot(square(1,:),square(2,:),'*b')
hold off
end

I keep getting the following error:

Error using linspace (line 22)
Inputs must be scalars.

Error in robot_travel (line 19)
xdt=linspace(0,xdt,n);%Increments X and Y so graph can animate

Answer 1

[Greg]

I didn't analyze for a more efficient solution, but move

xdt=linspace(0,xdt,n);%Increments X and Y so graph can animate
ydt=linspace(0,ydt,n);

inside your loop, and index xdt(i) ydt(i) as elsewhere.