Chapter 2. Plotting 2-D Graphs with Graphf

The canonical 2-D plot is a scatterplot where position along the x axis denotes one quantity and the y axis another, and you have a set of (x,y) points.

    unsigned i;
    Graphf2DPoint points[1000];
    for (i = 0; i < 1000; i++)
      {
	points[i].x = (double)rand () / RAND_MAX;
	points[i].y = (double)rand () / RAND_MAX;
      }
    graphf_2d_plot_1 ("random/scatter/simple", 1000, points,
		    GRAPHF_OPTION_2D_DATASET_CONNECT, 0,
		    GRAPHF_OPTION_2D_DATASET_MARKER, GRAPHF_2D_MARKER_CROSSHAIR,
		    0);

will produce a graph like