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