1/* -*-ePiX-*- */ 2#include "epix.h" 3using namespace ePiX; 4 5// the function to be plotted 6double f(double x) 7{ 8 return x*x; 9} 10 11int main() 12{ 13 picture(P(-2,0), P(2,4), "2.5x2.5in"); 14 15 begin(); 16 17 pen(Black(0.3)); 18 grid(8,8); // and coarse 19 20 pen(Black()); 21 axis Ax(P(xmin(),0), P(xmax(),0), 4, P(0,-4), b); 22 axis Ay(P(0,ymin()), P(0,ymax()), 4, P(4, 0), r); 23 24 font_size("scriptsize"); 25 Ax.draw(); 26 Ay.unmark(0).draw(); 27 28 bold(Red()); 29 plot(f, xmin(), xmax(), 40); 30 31 end(); 32} 33