ref: 556618eb07d1ac6e2c629a60acd53c45d53261be
dir: /sys/src/cmd/plot/libplot/range.c/
#include "mplot.h" void range(double x0, double y0, double x1, double y1){ e1->xmin = x0; e1->ymin = y0; e1->scalex = e1->sidex / (x1 - x0 ); e1->scaley = e1->sidey / (y1 - y0 ); e1->quantum=e0->quantum/sqrt(e1->scalex*e1->scalex + e1->scaley*e1->scaley); if(e1->quantum < .01) e1->quantum = .01; }