function shili09

h0=figure(‘toolbar’,’none’,…

‘position’,[200 150 450 250],…

‘name’,’实例09′);

t=[54 21 35;

68 54 35;

45 25 12;

48 68 45;

68 54 69];

x=sum(t);

h=pie(x);

textobjs=findobj(h,’type’,’text’);

str1=get(textobjs,{‘string’});

val1=get(textobjs,{‘extent’});

oldext=cat(1,val1{:});

names={‘商品一：’;’商品二：’;’商品三：’};

str2=strcat(names,str1);

set(textobjs,{‘string’},str2)

val2=get(textobjs,{‘extent’});

newext=cat(1,val2{:});

offset=sign(oldext(:,1)).*(newext(:,3)-oldext(:,3))/2;

pos=get(textobjs,{‘position’});

textpos=cat(1,pos{:});

textpos(:,1)=textpos(:,1)+offset;

set(textobjs,{‘position’},num2cell(textpos,[3,2]))