./rect_ilc.sh -1.5625 1.5625 -0.1875 0.875 3.125 68 8:15 3:11 1:5 7 75 -h8

#./rect_ilNoRot.sh -1.5625 1.5625 -0.1875 0.875 -h8 -co -rh3.125

# ies2tab -l -mi -e -u-1.5625:1.5625:-0.1875:0.875 -h8 -co -rh3.125 \
# -nSMBT-1-F-U-90-3-3_EU photom_files/SMBT-1-F-U-90-3-3_EU.LDT

#; 12.5 / 8
#        1.5625
#; 7 /8
#        8.75e-1
#; 1.5 /8
#        1.875e-1



# echo 'At least 11 parameters are needed:
# 1: xmin (of a rectangle whose illuminance will be computed) 
# 2: xmax 
# 3: ymin 
# 4: ymax 
# 5: relative spacing (neighbouring poles distance / pole height), 
#     usually should be set equal to xmax-xmin (if larger than that, 
#     the computed useful fraction may be over 100 %)
# 6: useful fraction (proportion of the flux of the row of luminaires hitting
#                     the rectangle), at least
# 7: range of allowed maximum (/ 1 lx) (specific) illuminance 
#     within that rectangle, as #:#
# 8: range of average illuminance as #:#
# 9: range of minimum illuminance (/ 1 lx) there, as #:#
# 10: maximal allowed ratio average/minimum
# 11: specific luminous intensity (/ cd/klm) at >=80_degrees, at most
# (ev. further, non-obligatory parameters 
#  are simply included in ies2tab command line before the file name).'