waitbar Attempt to execute SCRIPT waitbar as a function.

首先，step未定义；其次，后面未写全……
程序修改如下：
h1=waitbar(0,'正在计算,请勿关机');

step=1000;
for t1=1:step
h1=waitbar(t1/step);
end
close(h1); %运行完自动关闭waitbar