Parts 4 and 5-- Stewart_plot.m

function Stewart_plot(x,y,theta,p1,p2,p3)
%plots Stewart platform, given positions of corners in the following order:
%bottom-left (u1,v1), top-left (u2,v2), and bottom-right (u3,v3).


%strut beginning positions
x0=0; %implied-- never included in book figures/equations
y0=0; %implied-- never included in book figures/equations

x1=4;
y1=0; %implied-- never included in book figures/equations

x2=0;
y2=4;

gamma=pi*(1/4);


%solve for planar Stewart platform side points (via 1.38 equations)
u1=x;
v1=y;

u2=x+p2*cos(theta+gamma);
v2=y+p2*sin(theta+gamma);

u3=x+p3*cos(theta);
v3=y+p3*sin(theta);


%plot red triangle (planar Stewart platform) and hold
plot([u1 u2 u3 u1],[v1 v2 v3 v1],'r');

hold on


%plot strut beginning points
plot([x0,x1,x2],[y0,y1,y2],'bo')


%plot strut length lines
plot([x0 u1],[y0 v1],'b')
plot([x1,u3],[y1,v3],'b')
plot([x2 u2],[y2 v2],'b')


%complete plot
hold off

Not enough input arguments.

Error in Stewart_plot (line 21)
u1=x;