4.4图形处理的基本技术.pdf

4.4 4.4.1 1.axis axis(V) VV V=[XMIN,XMAX,YMIN,YMAX] [XMIN,XMAX,YMIN,YMAX] 4.4.1 x=0:pi/50:10*pi; y=sin(x); plot(x,y); axis([-2,60,-2,1]) V=[XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX ] : [XMIN, XMAX, YMIN,YMAX, ZMIN, ZMAX ] 2.grid grid on/off 4.4.2 x=0:pi/50:10*pi; y=sin(x); plot(x,y); axis([-1,40,-1,1]) grid on 3. box box on/off box on box off boxbox onbox off 4.4.2 1. titlexlabelylabel xlabel(‘’,’ 1’,1,’2’,2…) ylabel(‘’,’ 1’,1,’2’,2…) title(‘’,’ 1’,1,’2’,2…) 4.4.3 x=0:pi/50:10*pi; y=sin(x); plot(x,y); axis([-1,40,-1,1]) grid on xlabel(x(0-2\pi) , FontWeight,bold); ylabel(y=sin(x) , FontWeight, bold); title(, FontSize,12, FontWeight, bold, FontName, ) \bf \it \sl () \rm \fontname \fontsize “”“{”“^” “”“\\”‘‘\{ ”“\^” MATLAB “”“^” ({}) 4.4.4 x=-10:0.1:10; y=exp(-x.^2/2); plot(x,y, -); title(\bf y=e^{-x^{2}/2}); 2. text(x,y,’’) (x,y) 4.4.5 x=0:0.01*pi:2*pi; y=sin(x); plot(x,y); grid on xlabel(x(0-2\pi) , FontWeight, bold); ylabel(y=sin(x) , FontWeight, bold); title(, FontSize,12, FontWeight, bold, FontName, ) text(3*pi/4,sin(3*pi/4), \leftarrow sin(3\pi/4)=-0.707) 3. gtex(...,PropertyName,PropertyValue,...) 4.4.6 x=0:0.01*pi:2*pi; y=sin(x); plot(x,y); gtext(y=sin(x) , fontsize,12) gtext(y=sin(x)^2\theta,fontsize,12) 4. legend(1’2’...) 12 4.4.7 x=0:0.01*pi:2*pi; y=sin(x); z=cos(x); plot(x,y,x,z); legend(sin(x) ,cos(x) ) 4.4.3 1. hold on hold off hold hold onhold off 4.4.8 x=0:0.01*pi:2*pi; y=sin(x); plot(