在edit text中怎么显示sym变量？

shibinggege

set(handles.An_content, 'String',An);
其中An是一个sym变量
错误信息如下：
??? Error using ==> set
Conversion to double from sym is not possible.

Error in ==> fangcheng_main>fangcheng_Callback at 290
set(handles.An_content, 'String',An);

ChaChing

set(handles.An_content, 'String',char(An));

sanalex

a=[1,2];b=[4,7,6];sys1=tf(a,b)
set(handles.edit1,'string',char(sys1))
不成功啊，大家帮忙看下啦！
??? Error using ==> char
Conversion to char from tf is not possible.

Error in ==> shiyan>pushbutton4_Callback at 136
set(handles.edit1,'string',char(sys1))

Error in ==> gui_mainfcn at 75
        feval(varargin{:});

Error in ==> shiyan at 44
    gui_mainfcn(gui_State, varargin{:});

??? Error while evaluating uicontrol Callback.

ChaChing

仅知道sys1是tf LTI, char不能将之转换成文字!
至於该使用何方式, 不才, 没试成
待高人路过!

[ 本帖最后由 ChaChing 于 2009-5-7 11:52 编辑 ]