[Gnuplot-info] graph "disappears" with column() in using spec

[Daniel G. <li...@da...>]

Hello,

plotting
plot 	"Pen10-M-$0.out" using 1:2 "LCE,%lf,77,500,%lf,%lf" title "0" with lines
works fine.

Plotting
plot 	"Pen10-M-$0.out" using 1:(column(2)) "LCE,%lf,77,500,%lf,%lf" title "0" with lines

should produce the same result but the curve does not show up. Autoscale works but no plot appears. So it is not possible for me to plot:
plot 	"Pen10-M-$0.out" using 1:(column(2)+column(3)) "LCE,%lf,77,500,%lf,%lf" title "0" with lines
but it should.

Did I miss something?

Regards,
Daniel.

P.S. using gplot 4.1