117 | 117 | The {{{q}}} array takes the form {{{q(x,y,z,variable)}}} where {{{variable}}} is an index that refers to the various physical quantities such as density, momentum, energy, etc. in each cell. The order of the quantities in the {{{variable}}} array is dependent on the equation of state, whether or not magnetic fields are being tracked, etc... For 2D hydro (non MHD) the order of the fields is {{{(rho, px, py, E)}}}. So if we wanted to set the energy of the cell at integer location {{{i,j,k}}} we would use |