Re: [Gnuplot-info] internal error: stack not empty

[Hans-Bernhard B. <HBB...@t-...>]

On 23.08.2010 22:27, yi lu wrote:

I strongly suspect this:

> tan(px,py,pz)=(sqrt(px*px+py*py)/pz);

is your problem.  You may not have recognized it, but this tries to 
redefine / override gnuplot's built-in 'tan' function, and with the 
wrong number of arguments to boot.

Don't do that.