Question

MATLAB 如何把数据中出现次数较少的数据点去掉

hist, bincounts 之类的命令只能显示数据分部，请问如何把数据中出现少的点去除，比如说
x = [0,2,9,2,5,8,7,3,1,9,4,3,5,8,10,0,1,2,9,5,10]
如何把出现频率小于20％的数据段都去掉

Answer 1

x = [0,2,9,2,5,8,7,3,1,9,4,3,5,8,10,0,1,2,9,5,10];
w = length(x);
a = unique(x);
v = 0.20;
for k = 1:length(a)
    vv = sum(x==a(k))/w;
    if vv<v
        x(x==a(k)) = [];
    end;
end;