www.gusucode.com > matlab编程用户界面的卡尔曼滤波程序源码 > matlab编程用户界面的卡尔曼滤波程序源码/Kalman filter_GUI/m_files/isnumber.m

    function sign=isnumber(a)
%Judge if a character is a number
if a>='0' & a<='9'
    sign=1;
else 
    sign=0;
end