set terminal svg size 640,480 set output 'methode1.svg' set xrange [1000:7000] set yrange [15:45] set xlabel "Droits de scolarite ($)" set ylabel "Taux frequentation (%)" set grid set key off plot \ 27.83267-x*0.00005382166 with lines \ ,'methode1.dat' using 2:3:(sqrt($4/100)) with circles lc rgb "blue" fs transparent solid 0.15 \ ,'methode1.dat' using ($2-100):($3+1):1 with labels # , 30.0464418-x*0,000344352 with lines \