function mPlotJointPDF( title_label, x_label, x_values, y_label, y_values, z_label, joint_pdf )
fprintf( 2, 'Plotting...' );
mesh( x_values, y_values, joint_pdf' );
grid on;
PDF_max = max( max( joint_pdf ) );
PDF_max = ceil( PDF_max*2000 ) / 2000;
axis( [ min( x_values ) max( x_values ) min( y_values ) max( y_values ) 0 PDF_max ] );
view( -10, 30 );
xlabel( x_label );
ylabel( y_label );
zlabel( z_label );
title( title_label );
drawnow;
fprintf( 2, 'done\n.' );