Matlab foundation-binarize data through threshold

The goal is to binarize an array after judging the threshold size

function [ y ] = filter_yuzhi( x,yuzhi )
%   过滤器 y为输出,x为数组输入，yuzhi为设定的阈值
%   根据yuzhi参数，判断当前的x， 如果x>yuzhi 输出1，否则输出0
a = length(x);
j = 1;
for i=1:a
    if isnan(x(i))==0
        if(x(i)>=yuzhi) 
            y(j) = 1;
        else 
            y(j) = 0;
        end
        j = j+1;
    end
end

end

 

Among them, if isnan(x(i))==0 is used to skip the NaN that may be contained in the array (mainly the empty place in the EXCEL table is NaN)