Some commonly used terms

Radiance definition: implies the description of a physical object that is to be simulated, in terms of Radiance materials and geometry. The definition is stored in simple ASCII format. A detailed description of the Radiance scene format can be found in (Ward 1997) and (LBNL 2016a).

Scene: collectively refers to those Radiance definitions that are physically relevant to a daylighting simulation.

Sampling Comment or Rfluxmtx Comment: refers to the controlling parameters relevant to rfluxmtx that are to be included as a part of the Radiance definition of certain files. These parameters begin with the term “#@rfluxmtx”.

Grid Points: refer to virtual locations, expressed in three-dimensional coordinates (x, y, z) and directional vectors (x-direction-direction, z-direction), that are used to measure illuminance in a simulation.