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matlab»æÖƼýÍ· Ò»¡¢¶þά¼ýÍ· 1£®µ÷Óà annotationº¯Êý»æÖƶþά¼ýÍ·annotationº¯ÊýÓÃÀ´ÔÚµ±Ç°Í¼Ðδ°¿Ú½¨Á¢×¢ÊͶÔÏó£¨annotation¶ÔÏ󣩣¬ËüµÄµ÷ÓøñʽÈçÏ£º(1) annotation(annotation_type) % ÒÔÖ¸¶¨µÄ¶ÔÏóÀàÐÍ£¬Ê¹ÓÃĬÈÏÊôÐÔÖµ½¨Á¢×¢ÊͶÔÏó¡£ (2) annotation('line',x,y) % ½¨Á¢´Ó(x(1), y(1))µ½(x(2), y(2))µÄÏß×¢ÊͶÔÏó¡£ (3) annotation('arrow',x,y) % ½¨Á¢´Ó(x(1), y(1))µ½(x(2), y(2))µÄ¼ýÍ·×¢ÊͶÔÏó¡£ (4) annotation('doublearrow',x,y)% ½¨Á¢´Ó(x(1), y(1))µ½(x(2), y(2))µÄË«¼ýÍ·×¢ÊͶÔÏó¡£ (5) annotation('textarrow',x,y) % ½¨Á¢´Ó(x(1),y(1))µ½(x(2),y(2))µÄ´øÎı¾¿òµÄ¼ýÍ·×¢ÊͶÔÏó (6) annotation('textbox',[x y w h]) % ½¨Á¢Îı¾¿ò×¢ÊͶÔÏó£¬×óϽÇ×ø±ê(x,y)£¬¿íw£¬¸ßh. (7) annotation('ellipse',[x y w h]) % ½¨Á¢ÍÖÔ²ÐÎ×¢ÊͶÔÏó¡£ (8) annotation('rectangle',[x y w h])% ½¨Á¢¾ØÐÎ×¢ÊͶÔÏó¡£ (9) annotation(figure_handle,¡) % ÔÚ¾ä±úֵΪfigure_handleµÄͼÐδ°¿Ú½¨Á¢×¢ÊͶÔÏó¡£ (10) annotation(¡,'PropertyName',PropertyValue,¡) % ½¨Á¢²¢ÉèÖÃ×¢ÊͶÔÏóµÄÊôÐÔ¡£ (11) anno_obj_handle = annotation(¡) % ·µ»Ø×¢ÊͶÔÏóµÄ¾ä±úÖµ¡£ ×¢Ò⣺annotation¶ÔÏóµÄ¸¸¶ÔÏóÊÇfigure¶ÔÏó£¬ÉÏÃæÌáµ½µÄ×ø±êx£¬yÊDZê×¼»¯µÄ×ø±ê£¬¼´Õû¸öͼÐδ°¿Ú£¨figure¶ÔÏó£©×óϽÇΪ(0, 0)£¬ÓÒÉϽÇΪ(1, 1)¡£¿í¶ÈwºÍ¸ß¶ÈhÒ²¶¼ÊDZê×¼»¯µÄ£¬ÆäȡֵÔÚ[0, 1]Ö®¼ä¡£ ¡¾Àý1¡¿¸ù¾ÝÍÖÔ²·½³Ì234316fz41rctgard4obfw.jpg»æÖÆÍÖÔ²ÇúÏߣ¬²¢ÐÞÊÎͼÐΡ£ >> P = [3 1; 1 4]; >> r = 5; >> [V, D] = eig(P); % ÇóÌØÕ÷Öµ£¬½«ÍÖÔ²»¯Îª±ê×¼·½³Ì >> a = sqrt(r/D(1)); % ÍÖÔ²³¤°ëÖá >> b = sqrt(r/D(4)); % ÍÖÔ²¶Ì°ëÖá >> t = linspace(0, 2*pi, 60); % µÈ¼ä¸ô²úÉúÒ»¸ö´Ó0µ½2piµÄ°üº¬60¸öÔªËØµÄÏòÁ¿ >> xy = V*[a*cos(t); b*sin(t)]; % ¸ù¾ÝÍÖÔ²µÄ¼«×ø±ê·½³Ì¼ÆËãÍÖÔ²ÉϵãµÄ×ø±ê >> plot(xy(1, ,xy(2, , 'k', 'linewidth', 3); % »æÖÆÍÖÔ²ÇúÏߣ¬Ïß¿íΪ3£¬ÑÕɫΪºÚÉ«% ÔÚµ±Ç°Í¼Ðδ°¿Ú¼ÓÈë´ø¼ýÍ·µÄÎı¾±ê×¢¿ò >> h = annotation('textarrow',[0.606 0.65],[0.55 0.65]); % ÉèÖÃÎı¾±ê×¢¿òÖÐÏÔʾµÄ×Ö·û´®£¬²¢Éè×ÖºÅΪ15 >> set(h, 'string','3x^2+2xy+4y^2 = 5', 'fontsize', 15); >> annotation('doublearrow',[0.2 0.8],[0.85 0.85],... 'LineStyle','-','color',[1 0 0],'HeadStyle','cback3'); 234316dh4zvr59rtv5tz0o.jpg.thumb.jpg ¡¾Àý2¡¿»æÖƵØÇòÒÇ£¬²¢±ê³öÎÒÃǵÄλÖà % »æÖƵØÇòÒÇ£¬²¢±ê³öÎÒÃǵÄλÖà >> cla reset; >> load topo; >> [x y z] = sphere(45); >> s = surface(x,y,z,'FaceColor','texturemap','CData',topo); >> colormap(topomap1); % Brighten the colormap for better annotation visibility: >> brighten(.6) % Create and arrange the camera and lighting for better visibility: >> campos([1.3239 -14.4250 9.4954]); >> camlight; >> lighting gouraud; >> axis off vis3d; % Set the x- and y-coordinates of the textarrow object: >> x = [0.7698 0.5851]; >> y = [0.3593 0.5492]; % Create the textarrow object: >> txtar = annotation('textarrow',x,y,'String','We are here.','FontSize',14); 234317a99aru529pcjh46v.jpg.thumb.jpg 2£®µ÷ÓÃquiverº¯Êý»æÖƼýÍ· quiverº¯ÊýµÄµ÷ÓøñʽÈçÏ£º quiver(x,y,u,v) quiver(u,v) quiver(...,scale) quiver(...,LineSpec) quiver(...,LineSpec,'filled') quiver(axes_handle,...) h = quiver(...) ±¾ÎÄ×ªÔØÓÚ¼¼ÊõÁÚ http://www.jishulink.com/content/post/347679 |
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