MATLAB: MatLab code for generating a surface as shown in the attached figure: an ellipse in the X-Y plane is twisted by 90deg as it progresses along Z-axis.

axis changingcurve fitting

Best Answer

As an approximation:

[TH,R] = ndgrid(linspace(0,pi/2,200),linspace(10,22,200));
Z = sin(50*TH);
[X,Y,ZZ] = pol2cart(TH,R,Z);
surf(X,Y,ZZ,'edgecolor','none')
axis equal
view(-35,66)

Related Solutions

MATLAB: Z is not matrix for surf(X,Y,Z)

TH = [0:0.05*pi:2*pi ]; 
R = [0:0.5:20]; 
[X,Y] =pol2cart(TH,R); 
[X,Y] = meshgrid(X,Y) ;
[R,TH] = meshgrid(R,TH) ;
Z = (abs((sqrt(2)/(81*sqrt(pi))).*(6.*R-R.^2).*exp(-R./3).*cos(TH))).^2 ;
figure
surf(R,TH,Z)
figure
surf(X,Y,Z)

MATLAB: Contour in vertical plane

Parent the contour to a hgtransform and set its transform matrix see makehgtform

Related Question