Function main

examples/plotter1d.cpp:50–73

Main procedure ----------------

// Main procedure
//----------------
int main(int argc,char **argv) {

  // Read command line argument.
  cimg_usage("Simple plotter of mathematical formulas");
  const char *const formula = cimg_option("-f","sin(x/8) % cos(2*x)","Formula to plot");
  const float x0 = cimg_option("-x0",-5.0f,"Minimal X-value");
  const float x1 = cimg_option("-x1",5.0f,"Maximal X-value");
  const int resolution = cimg_option("-r",1024,"Plot resolution");
  const unsigned int nresolution = resolution>1?resolution:1024;
  const unsigned int plot_type = cimg_option("-p",1,"Plot type");
  const unsigned int vertex_type = cimg_option("-v",1,"Vertex type");

  // Create plot data.
  CImg<double> values(4,nresolution,1,1,0);
  const unsigned int r = nresolution - 1;
  cimg_forY(values,X) values(0,X) = x0 + X*(x1 - x0)/r;
  cimg::eval(formula,values).move_to(values);

  // Display interactive plot window.
  values.display_graph(formula,plot_type,vertex_type,"X-axis",x0,x1,"Y-axis");

  // Quit.
  return 0;
}