I am trying to make a 3D quiver plot using matplotlib 2.2.5. I provide a simple sample code below to show my attempt. I want to make a quiver plot using fx(x,y,z), fy(x,y,z) and fz(x,y,z). These correspond to the vector field f = (fx,fy,fz). I input the data for fx,fy,fz as 3 .dat files where each .dat file is 1