[MATLAB GUI] 如何将图形存入剪切板 方便调用到EXCEL中

[cloudphoenix]

im=imread('lena.bmp');
[g,t]=edge(im,'sobel',0.2);
%imshow(g);

%imwrite(g,'zhuzhu.jpg','jpg');
%将图形复制到粘贴板
hgexport(g, '-clipboard');%--这行出错
%将图形粘贴到当前表格的A5:B5栏里
Excel.ActiveSheet.Range('A5:B5').Select;
Excel.ActiveSheet.Paste;

错误提示是
??? Error using ==> hgexport at 140
First argument must be a handle to a figure.

Error in ==> segemt_test at 7
hgexport(g, '-clipboard');

谁知道如何解决 谢谢了