【高级绘图】MATLAB怎么将图形局部放大

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今天，遇到的问题是怎么样将图形的细节局部放大，小编查了许多资料，终于找到解决方法

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2 d) ^! ^; O% t效果如下所示1

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全部源码如下2

function enlarge(f1)%  Example:%     plot(1:100,randn(1,100),(1:300)/3,rand(1,300)), grid on,%     enlarge;
if (nargin == 0)    f1 = gcf;endset(f1, ...   'WindowButtonDownFcn',  @ButtonDownCallback, ...   'WindowButtonUpFcn', @ButtonUpCallback, ...   'WindowButtonMotionFcn', @ButtonMotionCallback, ...   'KeyPressFcn', @KeyPressCallback);return;
: w3 s3 o/ {+ l' }/ ^$ jfunction ButtonDownCallback(src,eventdata)   f1 = src;   a1 = get(f1,'CurrentAxes');   a2 = copyobj(a1,f1);
0 G  m6 H+ G; r7 x( Q  @$ S; P   set(f1, ...      'UserData',[f1,a1,a2], ...      'Pointer','fullcrosshair', ...      'CurrentAxes',a2);   set(a2, ...      'UserData',[2,0.2], ...  %magnification, frame size      'Color',get(a1,'Color'), ...      'Box','on');   xlabel(''); ylabel(''); zlabel(''); title('');   set(get(a2,'Children'), ...      'LineWidth', 2);   set(a1, ...      'Color',get(a1,'Color')*0.95);   set(f1, ...      'CurrentAxes',a1);   ButtonMotionCallback(src);return;
" n6 G% F$ l. H. p& Lfunction ButtonUpCallback(src,eventdata)   H = get(src,'UserData');   f1 = H(1); a1 = H(2); a2 = H(3);   set(a1, ...      'Color',get(a2,'Color'));   set(f1, ...      'UserData',[], ...      'Pointer','arrow', ...      'CurrentAxes',a1);   if ~strcmp(get(f1,'SelectionType'),'alt'),      delete(a2);   endreturn;
% y4 \, q) B# J2 T* r. J6 ]9 K5 Ffunction ButtonMotionCallback(src,eventdata)   H = get(src,'UserData');   if ~isempty(H)      f1 = H(1); a1 = H(2); a2 = H(3);      a2_param = get(a2,'UserData');      f_pos = get(f1,'Position');      a1_pos = get(a1,'Position');      [f_cp, a1_cp] = pointer2d(f1,a1);      set(a2,'Position',[(f_cp./f_pos(3:4)) 0 0]+a2_param(2)*a1_pos(3)*[-1 -1 2 2]);      a2_pos = get(a2,'Position');     set(a2,'XLim',a1_cp(1)+(1/a2_param(1))*(a2_pos(3)/a1_pos(3))*diff(get(a1,'XLim'))*[-0.5 0.5]);     set(a2,'YLim',a1_cp(2)+(1/a2_param(1))*(a2_pos(4)/a1_pos(4))*diff(get(a1,'YLim'))*[-0.5 0.5]);   endreturn;
0 k! B4 |3 O0 r. w, Xfunction KeyPressCallback(src,eventdata)   H = get(gcf,'UserData');   if ~isempty(H)      f1 = H(1); a1 = H(2); a2 = H(3);      a2_param = get(a2,'UserData');      if (strcmp(get(f1,'CurrentCharacter'),'+') | strcmp(get(f1,'CurrentCharacter'),'='))         a2_param(1) = a2_param(1)*1.2;      elseif (strcmp(get(f1,'CurrentCharacter'),'-') | strcmp(get(f1,'CurrentCharacter'),'_'))         a2_param(1) = a2_param(1)/1.2;      elseif (strcmp(get(f1,'CurrentCharacter'),') | strcmp(get(f1,'CurrentCharacter'),','))         a2_param(2) = a2_param(2)/1.2;      elseif (strcmp(get(f1,'CurrentCharacter'),'>') | strcmp(get(f1,'CurrentCharacter'),'.'))         a2_param(2) = a2_param(2)*1.2;      end;      set(a2,'UserData',a2_param);     ButtonMotionCallback(src);   endreturn;
" t6 c0 J. @$ A& n# m  ^, _" kfunction [fig_pointer_pos, axes_pointer_val] = pointer2d(fig_hndl,axes_hndl)if (nargin == 0), fig_hndl = gcf; axes_hndl = gca; end;if (nargin == 1), axes_hndl = get(fig_hndl,'CurrentAxes'); end;set(fig_hndl,'Units','pixels');pointer_pos = get(0,'PointerLocation');fig_pos = get(fig_hndl,'Position');fig_pointer_pos = pointer_pos - fig_pos([1,2]);set(fig_hndl,'CurrentPoint',fig_pointer_pos);if (isempty(axes_hndl)),  axes_pointer_val = [];elseif (nargout == 2),  axes_pointer_line = get(axes_hndl,'CurrentPoint');  axes_pointer_val = sum(axes_pointer_line)/2;end

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