I use SolarPILOT to generate the filed layout data. The result looks like below, it uses the position of each mirror as the x and y value. I try to use the data in EBSILON, but I am not sure the meaning of the matrix used in EBSILON, Based on the help document, the data format used in EBSILON is generated by HFLCAL, but I don't know why use elevation and azimuth as X-Y value. Anyone could explain this ? so I might transform this into the form of EBSILON and HFLCAL.