BEGIN { i=0; } { p1[i]=$1; p2[i]=$2; p3[i]=$5; x[i]=$3; y[i]=$4; i++; } END { minX = 1000; maxX = -1000; for (j=0; j maxX) maxX = x[j]; if (x[j] < minX) minX = x[j]; } logfactor=1000; norm = maxX - minX; for (j=0; j