folkert@computar:~/Projects/QueenBee/tags/v0.9.1_2205/trunk$ gnuplot < gp.txt > gp.png
         line 1061: warning: Skipping data file with no valid points

gnuplot> plot '-' using 1:2 axes x1y1 with lines title 'elo' ,    '' using 1:3 axes x1y2 with lines title 'error'
                                                                                                                 ^
         line 1061: all points y2 value undefined!