yes，sir，may be use data to fill area，such as
x = 0:0.2:10;
y = besselj(0, x);
xconf = [x x(end:-1:1)] ;
yconf = [y+0.15 y(end:-1:1)-0.15];
p = fill(xconf,yconf,'r','FaceColor',[1 0.8 0.8],'EdgeColor','none');
hold on
plot(x,y,'ro-')
