知道figure属性中position的位置：是从左下角开始，X，Y，长，宽；

但是针对uicontrol中的position设置的方式，大小依据不太明白，能讲解一下否？

例如下段程序：

hf=figure('Color',[0,1,1],'Position',[200,200,400,200],...

'Name','数制转换','NumberTitle','off','MenuBar','none');

uicontrol(hf,'Style','Text', 'Units','normalized',...

'Position',[0.05,0.8,0.45,0.1],'Horizontal','center',...

'String','输 入 框','Back',[0,1,1]);

uicontrol(hf,'Style','Text','Units','normalized',...

'Position',[0.5,0.8,0.45,0.1],'Horizontal','center',...

'String','输 出 框','Back',[0,1,1]);

uicontrol(hf,'Style','Frame','Units','normalized',...

'Position',[0.04,0.33,0.45,0.45],'Back',[1,1,0]);

uicontrol(hf,'Style','Text','Units','normalized',...

'Position',[0.05,0.6,0.25,0.1],'Horizontal','center',...

'String','十进制数','Back',[1,1,0]);

uicontrol(hf,'Style','Text','Units','normalized',...

'Position',[0.05,0.4,0.25,0.1],'Horizontal','center',...

'String','2～16进制','Back',[1,1,0]);

he1=uicontrol(hf,'Style','Edit','Units','normalized',...

'Position',[0.25,0.6,0.2,0.1],'Back',[0,1,0]);

he2=uicontrol(hf,'Style','Edit','Units','normalized',...

'Position',[0.25,0.4,0.2,0.1],'Back',[0,1,0]);

uicontrol(hf,'Style','Frame','Units','normalized',...

'Position',[0.52,0.33,0.45,0.45],'Back',[1,1,0]);

ht=uicontrol(hf,'Style','Text','Units','normalized',...

'Position',[0.6,0.5,0.3,0.1],'Horizontal','center','Back',[0,1,0]);

COMM=['n=str2num(get(he1,''String''));','b=str2num(get(he2,''String''));',...

'dec=trdec(n,b);','set(ht,''string'',dec);'];

uicontrol(hf,'Style','Push','Units','normalized',...

'String','转 换','Position',[0.18,0.1,0.2,0.12],'Call',COMM);

uicontrol(hf,'Style','Push','Units','normalized',...

'String','退 出','Position',[0.65,0.1,0.2,0.12],'Call','close(hf)');

谢谢各位！