set multiplot soubor = 'sinnn.txt' set style data lines set origin 0,0 set size 1,1 plot soubor u 1:2 notitle, "" using 1:3 notitle set origin 0.1,0.1 set size 0.4,0.4 plot [0.9:1.1] soubor using 1:3 notitle set origin 0.5,0.5 set size 0.4,0.4 plot [0.99:1.01] soubor u 1:3 notitle unset multiplot set origin 0,0 set size 1,1