3D plot rotate

Hi all,

I have a 3D surf plotted in fig. 1 with axis X, Z and Y

Figure 1

I want to rotate the figure to get something like shown in fig.2

Figure 2

PS: Figure 2 is from book, I am just trying to generate similar figure using matlab. Both are same it's just about plotting in such a way that Y is in place of Z

[Tommy]

Can you provide the code you used to generate the plot?

[Aditya Rallapalli]

>> x = [0:0.01:1];

z = [0:0.01:1];

>> for i = 1:length(x)

for j = 1:length(z)

y1(i,j) = -sqrt(x(i) * z(j));

end

end

for i = 1:length(x)

for j = 1:length(z)

y2(i,j) = sqrt(x(i) * z(j));

end

end

surf(x,z,y1);hold on;

surf(x,z,y2)

Answer 1

[Star Strider]

Use the rotate function.

EDIT — (16 Apr 2020 at 13:35)

Using your posted code and rotate:

x = [0:0.01:1];
z = [0:0.01:1];
for i = 1:length(x)
for j = 1:length(z)
y1(i,j) = -sqrt(x(i) * z(j));
end
end
for i = 1:length(x)
for j = 1:length(z)
y2(i,j) = sqrt(x(i) * z(j));
end
end
h(1) = surf(x,z,y1);
hold on
h(2) = surf(x,z,y2);
hold off
rotate(h, [1 0 0], 90)

produces:

If you want only the grids without the patch colours, add:

set(h, 'FaceColor','none')

to produce:

.

Answer 2

[Ameer Hamza]

Try this. Correct the vector order for y and z-axis.

x = 0:0.01:1;
z = 0:0.01:1;

[X,Z] = meshgrid(x,z);

y1 = zeros(size(X));
for i = 1:length(x)
    for j = 1:length(z)
        y1(i,j) = -sqrt(x(i) * z(j));
    end
end

y2 = zeros(size(X));
for i = 1:length(x)
    for j = 1:length(z)
        y2(i,j) = sqrt(x(i) * z(j));
    end
end

surf(X,y1,Z);hold on;
surf(X,y2,Z)