MATLAB: How to rotate, scale and transform x y z coordination.

project

I want to do coding for following equations. How i do it using mat lab. Please help me.

Best Answer

clc; clear all ;
% square coordinates 
Sx = [0 1 1 0 0] ;
Sy = [0 0 1 1 0] ;
S = [Sx' Sy'] ;
% Rotation 
th = linspace(0,2*pi) ;
for i = 1:length(th)
    R = [cos(th(i)) sin(th(i)) ; -sin(th(i)) cos(th(i))] ;
    Sr = S*R ;
    plot(S(:,1),S(:,2),'b')
    hold on
    plot(Sr(:,1),Sr(:,2),'r')
    hold off
    drawnow
    pause(0.1)
end

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MATLAB: How to plot a circle with a given radius and center and i need to extract x,y,z points

The circle you described is two-dimensional. The ‘z’ coordinate is uniformly 0. If you want a circle above the plane, just define a new variable ‘zunit’ and define a vector to define it. This code puts the circle at z=5:

r = 1.25;
x =  0.1;
y = -0.1;
th = 0:pi/50:2*pi;
xunit = r * cos(th) + x;
yunit = r * sin(th) + y;
zunit = 5*ones(size(th));
figure(1)
plot3(xunit, yunit, zunit)
grid on
axis([-1.5  1.5    -1.5  1.5    0  10])

MATLAB: How to use plot

Maybe this

syms x 
th=[0:0.05:1.57]; 
[x]=solve('cos(th+x)=0','x');
f=subs(x,'th',th);
plot(th,f,th,cos(th),'r')
legend('f','cos(th)')

Best Answer

Related Solutions

MATLAB: How to plot a circle with a given radius and center and i need to extract x,y,z points

MATLAB: How to use plot

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