I have a results for density in 50x50x50 and x=0:50 and y=0:50, and z=0:50 anyone helps me how we can plot 3D contour in MATLAB, I tried to use [x,y,z]=meshgrid(Nx,Ny,Nz) but it gives me error. I applied contour3(x,y,z,density). Any help is welcome. I can post the density results here or I can send it to who needs to help me to plot it.