main()

main

(

)

example program

Just a simple example to show how the pgplot classes may be used.

See also

pgplot::device

Definition at line 54 of file pgplotxxdemo.cc.

References pgplot::pgaff::array_value_range(), pgplot::basic_device::env(), pgplot::pgaff::gray(), pgplot::basic_device::gwedg(), pgplot::pgaff::line(), pgplot::pgaff::pt(), pgplot::basic_device::pt1(), pgplot::basic_device::subp(), and pgplot::Trange::swap().

{
  cout << "pgplotxxdemo" << endl;
  cout << "(example program for the C++ interface for PGPLOT)" << endl;

  /*
  pgplot::device d("/xserve");
  d.env(1.,5.,1.,10.,0,2);
  */
  pgplot::device d2("/xserve");
  d2.subp(2,1);
  /*
  d2.env(1.,5.,1.,10.,1,2);
  pgplot::basic_device::ldev();
  */

  //----------------------------------------------------------------------
  // go for gray plot

  pgplot::pgaff::Tarray A(aff::Shaper(0,6)(-3,3));
  for (int i=A.first(0); i<=A.last(0); ++i)
  {
    for (int j=A.first(1); j<=A.last(1); ++j)
    {
      A(i,j)=float(5*i+j);
    }
  }

  pgplot::pgaff::Tarray B1=aff::subarray(A)(4,6)(1,2);
  pgplot::pgaff::Tarray B2=aff::subarray(A)(0,4)(1,3);

  pgplot::Trect cwin(pgplot::Trange(-1.,3.),pgplot::Trange(-5.,5.));

  /*
  d2.ask();
  d2.env(cwin);
  pgplot::pgaff::Ttransform tr=pgplot::pgaff::create_transform(A,cwin);
  pgplot::Trange vrange=pgplot::pgaff::array_value_range(A).swap();
  pgplot::pgaff::gray(d2, A, vrange, tr).gwedg(vrange);
  */
  d2.env(cwin);
  pgplot::Trange vrange=pgplot::pgaff::array_value_range(A).swap();
  pgplot::pgaff::gray(d2, B1, vrange).gwedg(vrange);
  d2.env(cwin);
  pgplot::pgaff::gray(d2, B1, false).gwedg(vrange.swap());
  d2.env(cwin);
  pgplot::pgaff::gray(d2, B2);
  d2.env(cwin);
  pgplot::pgaff::gray(d2, A);
  /*
  d2.env(cwin);
  tr=pgplot::pgaff::create_transform(B2,cwin);
  vrange=pgplot::pgaff::array_value_range(B2).swap();
  pgplot::pgaff::gray(d2, B2, vrange, tr).gwedg(vrange);
  */

  //----------------------------------------------------------------------

  const int imax=100;
  pgplot::pgaff::Tseries x(0,imax-1);
  pgplot::pgaff::Tseries y(0,imax-1);
  for (int i=0; i<imax; ++i)
  {
    x(i)=std::sin(2.*3.14159265*i/imax);
    y(i)=std::cos(2.*3.14159265*i/imax);
  }
  d2.subp(1,1).env(-1.,1.,-1.,1.,1,2);
  pgplot::pgaff::line(d2,x,y);
  pgplot::pgaff::pt(d2,0.6*x,0.6*y,-3);
  for (int i=0; i<imax; ++i)
  {
    d2.pt1(x(i),y(i),i);
    d2.pt1(0.8*x(i),0.8*y(i),-i);
  }
  
}

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