[Radiance-general] Calculating transfer matrix for measurement points with luminaires in a room

[Aktuna, Berat]

Hello Radiance community,

I have a room with a few luminaires (no daylight) and given measurement points, and want to have the transfer matrix (influence of each luminaire on each measurement point) for this room.

Since a few days I am trying around with rfluxmtx but got stuck in an error message: "missing receiver surface!"

I'm using radiance on windows with no gui.
I made a batch file to call:
oconv szene.rad lights.rad > szene.oct
rfluxmtx -I+ szene.oct @szene.opt - lights.rad < messpunkte.xyz > koeffizientenmatrix.mtx


in szene.rad I used #@rfluxmtx h=u before some polygons where the measurement points (messpunkte.xyz) are.

Szene.opt is: -I+ -h -dp 512 -ar 128 -ds .15 -dj .7 -dt .05 -dc .5 -dr 3 -ss .7 -st .1 -ab 0 -aa .1 -ad 512 -as 256 -lr 10 -lw .002 -av 0 0 0

Lights.rad positions the luminaires with xform and calls #@rfluxmtx h=u before each.
#@rfluxmtx h=u
!xform -n L1_direkt        -t 1.21 2.6 2.6                    k_direkt.rad
#@rfluxmtx h=u
!xform -n L2_direkt        -t 3 2.6 2.6                          k_direkt.rad
...

I also tried to write #@rfluxmtx h=u inside the k_direkt.rad luminaire file, no difference.

Feels like I tried every combination I can imagine for the luminaires and polygons but it just won't work.
I have attached the files.

Does anyone have an idea or has a working example I could learn from?

Thanks,
Berat


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