Programming and Graphics

7.5 A graph with axes 225

}

}

//--- Complete the axes box:

move2 (xmax,ymin);

draw2 (xmax,ymax);

draw2 (xmin,ymax);

//--- Print plot titles:

color (lbc);

xmargin = 0.2*xrange;

ymargin = 0.2*yrange;

//--- First plot title:

font("/tmp/hfonts/futura.l");

float textszx = 0.4*xmargin; // text size

float textszy = 0.4*ymargin; // text size

textsize (textszx,textszy);

move2 (xmin+0.3*xrange,ymax+0.6*ymargin);

drawstr(title1);

//--- Second plot title:

font("/tmp/hfonts/times.ib");

textszx = 0.35*xmargin; // text size

textszy = 0.35*ymargin; // text size

textsize (textszx,textszy);

move2 (xmin+0.3*xrange,ymax+0.4*ymargin);

drawstr(title2);

//--- Third plot title:

font("/tmp/hfonts/times.i");

textszx = 0.30*xmargin; // text size

textszy = 0.30*ymargin; // text size

textsize (textszx,textszy);

move2 (xmin+0.3*xrange,ymax+0.2*ymargin);

drawstr(title3);

}

Code plot2d

The following program contained in the fileplot2d.ccdefines and plots
data points: