[Gnuplot-info] batch mode arguments and column numbers

[fly a. <vic...@gm...>]

Hi.
If I run a gnuplot script and pass some arguments to it, then I refer to
them as $0, $1 etc up to 10, right? 
But if I want to use functions, then when plotting I refer to column numbers
in a similar way. For ex.
sin_phi(x,y) = y/sqrt(x**2 + y**2)
cos_phi(x,y) = x/sqrt(x**2 + y**2)
vx(v2,v3,x,y) = - v2 * cos_phi(x,y) - v3*sin_phi(x,y)
vy(v2,v3,x,y) = - v2 * sin_phi(x,y) - v3*cos_phi(x,y)
v(v2,v3) = sqrt(v2**2 + v3**2)
coef = 1e-2
plot file_eqa every 2:2 u
9:10:(vx($5,$6,$9,$10)*coef):(vy($5,$6,$9,$10)*coef) with vectors head title
""

So now the question is: How do I do the same thing with functions when I use
gnuplot in batch mode? Because it seems to get confused with those.

Thanks.
Victor.
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