matlab 更改横坐标坐标值的方向

【转载】http://blog.sina.com.cn/s/blog_7270407901012dyd.html#post

非常有用的Matlab代码，收藏了。

function th=rotateticklabel(h,rot,demo)

%ROTATETICKLABEL rotates tick labels

% TH=ROTATETICKLABEL(H,ROT) ris the calling form where H is a handle to

% the axis that contains the XTickLabels that are to be rotated. ROT is

% an optional parameter that specifies the angle of rotation. The default

% angle is 90. TH is a handle to the text objects created. For long

% strings such as those produced by datetick, you may have to adjust the

% position of the axes so the labels don't get cut off.

% Of course, GCA can be substituted for H if desired.

% TH=ROTATETICKLABEL([],[],'demo') shows a demo figure.

% Known deficiencies: if tick labels are raised to a power, the power

% will be lost after rotation.

% See also datetick.

% Written Oct 14, 2005 by Andy Bliss

�MO:

if nargin==3

x=[now-.7 now-.3 now];

y=[20 35 15];

figure

plot(x,y,'.-')

datetick('x',0,'keepticks')

h=gca;

set(h,'position',[0.13 0.35 0.775 0.55])

rot=90;

end

%set the default rotation if user doesn't specify

if nargin==1

rot=90;

end

%make sure the rotation is in the range 0:360 (brute force method)

% while rot>360

% rot=rot-360;

% end

% while rot<0

% rot=rot+360;

% end

%get current tick labels

a=get(h,'XTickLabel');

%erase current tick labels from figure

set(h,'XTickLabel',[]);

%get tick label positions

b=get(h,'XTick');

c=get(h,'YTick');

%make new tick labels

if rot<180

th=text(b,repmat(c(1)-.1*(c(2)-c(1)),length(b),1),a,'HorizontalAlignment','right','fontsize',14,'fontweight','bold','rotation',rot);

else

th=text(b,repmat(c(1)-.1*(c(2)-c(1)),length(b),1),a,'HorizontalAlignment','left','fontsize',14,'fontweight','bold','rotation',rot);

end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

使用方法：

y3=[24.2 15.3 26.51 38.53 25.98 31.94 25.31 29.85];

x1=[1 2 3 4 5 6 7 8];

bar(x1,y3,'k');

set(gca,'xticklabel',{'CON','OA','AFMK','AFMK+OA','Mel','Mel+OA','VitE','VitE+OA'});

h=gca;

th=rotateticklabel(h,-30);