#include <boost/svg_plot/svg_2d_plot.hpp>
#include <map>
#include <cmath>

using std::multimap;
using namespace boost::svg;

double f(double x)
{
	return sqrt(x);
}

double g(double x)
{
	return -2 + x*x;
}

double h(double x)
{
	return -1 + 2*x;
}

int main()
{
	multimap<double, double> data1, data2, data3;
	
	for(double i=0; i<=10.; i+=1.)
	{
		data1[i] = f(i);
		data2[i] = g(i);
		data3[i] = h(i);
	}

	svg_2d_plot my_plot;

	// Size/scale settings.
	my_plot.image_size(700, 500)
	       .x_range(-1, 10)
	       .y_range(-5, 100)

	// Text settings.
	my_plot.title("Plot of Mathematical Functions")
	       .title_font_size(29)
	       .x_label("Time in Months");
	
	// Commands.
	my_plot.legend_on(true)
	       .plot_window_on(true)
	       .x_label_on(true)
	       .x_major_labels_on(true);
	
	// Color settings.
	my_plot.background_color(svg_color(67, 111, 69))
	       .legend_background_color(svg_color(207, 202,167))
	       .legend_border_color(svg_color(102, 102, 84))
	       .plot_background_color(svg_color(136, 188, 126))
	       .title_color(white);

	//X axis settings.
	my_plot.x_major_interval(2)
	       .x_major_tick_length(14)
	       .x_major_tick_width(1)
	       .x_minor_tick_length(7)
	       .x_minor_tick_width(1)
	       .x_num_minor_ticks(3)
	
	//Y axis settings.
	       .y_major_tick(10)
	       .y_num_minor_ticks(2);		

	//legend settings
	my_plot.legend_title_font_size(15);
	
	my_plot.plot(data1, "Sqrt(x)",  blue,   
			     _point_style = none,
		     _show_line = true);

	my_plot.plot(data2, "-2 + x^2", orange, 
		     _show_line = true);

	my_plot.plot(data3, "-1 + 2x",  red,
		     _point_style = square);

	my_plot.write("2d_full.svg");

	return 0;
}

This produces the following output:

A little bit of color customization goes a long way!