illegal variable name

edit

I used Radiance 5.0 Ver ( OS fedora)

Radiance run

**<Process>**

#!/bin/sh

###P40_Paju
oconv -r 10240 Paju_0417.sky Room.rad Prism_P40_10.rad > P40_Paju.oct
mkpmap -apg P40_Paju.gpm 5000 -t 30 \
 -apc P40_Paju.cpm 50000 P40_Paju.oct

rpict -ab 3 -aa .2 -ar 128 -ad 512 -dr 3 -dp 512 -t 10 \
   -ap P40_Paju.gpm 100 \
   -ap P40_Paju.cpm 500 \
   -vf view_Paju.view \
   -ro P40_1230.pic P40_Paju.oct

rtrace -w -h -I+ -ab 3 -aa .2 -ar 128 -ad 512 -dr 3 -dp 512 \
      -ap P40_Paju.gpm 100 \
      -ap P40_Paju.cpm 500 P40_Paju.oct < luxCalcPos.inp | 
      rcalc -e "$1=179*($1*0.265+$2*0.670+$3*0.065)" > P40_1230.dat

pcond -h P40_1230.pic > P40_1230.h.pic 
ra_t16 -3 P40_1230.h.pic > P40_1230.h.tga

**<Result>**
=179*(*0.265+*0.670+*0.065)
^ illegal variable name
rtrace : signal - Broken pipe

why Result ?