/* -*-ePiX-*- */
#include "epix.h"
#include "cme_style.h"
using namespace ePiX;

//const double bs(log(1.2));
const double bs(0.5), m(0.175);
double f(double x)
{
  return bs + m*x;
}

int main()
{
  picture(P(0,0), P(7,1.5), "2.5 x 1.75in");

  begin();
  cme_bold();

  plot(f, 0, 6.25, 1);

  for (int i=1; i<=6; ++i)
    {
      cme_dashed();
      P tmp(i,f(i));
      line(P(i,0), tmp);

      cme_solid();
      line(P(i-1, f(i-1)), P(i, f(i-1)));
      line(tmp, P(i, f(i-1)));
    }

  h_axis_labels(P(1,0), P(6,0), 5, P(0,-4), b);

  smallbrace(P(0,f(0)), P(0,0), "$\\log b$", P(-16,0));

  label_angle(M_PI_2);
  label(P(0,0.8), P(-4,0), "$\\log y$", l);
  label_angle(0);

  axis_labels("$O$", "$X$", "");
  axes();
  caption("Fig.~41.");
  tikz_format();
  end();
}