matlab magnify程序,magnify matlab源程序

将里面的内容复制到matlab m文件中,并以magnify命令即可

% start of program

function magnify(f1)

% magnify(f1)

% Figure creates a magnification box when under the mouse position when a button is pressed. Press '+'/'-' while

% button pressed to increase/decrease magnification. Press '>'/'

% Hold 'Ctrl' while clicking to leave magnification on figure.

%

% Example:

% plot(1:100,randn(1,100),(1:300)/3,rand(1,300)), grid on,

% magnify;

if (nargin == 0), f1 = gcf; end;

figure(f1);

set(f1, ...

'WindowButtonDownFcn', @ButtonDownCallback, ...

'WindowButtonUpFcn', @ButtonUpCallback, ...

'WindowButtonMotionFcn', @ButtonMotionCallback, ...

'KeyPressFcn', @KeyPressCallback);

return;

function ButtonDownCallback(src,eventdata)

f1 = src;

a1 = get(f1,'CurrentAxes');

a2 = copyobj(a1,f1);

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;

function 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);

end;

return;

function 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]);

end;

return;

function 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'),'

a2_param(2) =

a2_param(2)/1.2;

elseif (strcmp(get(f1,'CurrentCharacter'),'>') | strcmp(get(f1,'CurrentCharacter'),'.'))