MATLAB: How to use plot3 for x,y,z, while plotting.. it shows nothing

3d plotsplot3

i have to use plot3 function to plot x,y,z

x=[1]
y=[2]
z=[3]
plot3(x,y,z)

while i plot this , nothing appears on the plot.. how to plot this in 3d

plot3(x,y,z,'.r')

As you have single data..you need to use a marker.

Use the hold (link) function.

figure(1)
surf(X,Y,Z1)
hold on
surf(X,Y,Z2)
hold off
grid on

X = 1:0.5:10; Y = 0:0.2:25; Z = 0:0.1:4;
[x, y, z] = ndgrid(X, Y, Z);
pointsize = 15;
scatter3(x(:), y(:), z(:), pointsize);