set xrange[0:100] set yrange[0:100] set xlabel "xの系列名" set ylabel "yの系列名" plot \ "data1.dat" with lines , \ "data2.dat" with lines
set xrange[0:100] set yrange[0:100] set xlabel "xの系列名" set ylabel "yの系列名" plot \ "data1.dat" with lines title "", \ "data2.dat" with lines title ""