怎样用matlab将数据分块
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j = 90*rand(1600,1); v = 18*rand(1600,1)+2;
A = [sqrt(sort(j)),sort(v)];
% 以上是模拟数据，将 A 换为自己的数据
wv = 2:0.5:20;ww = length(wv);
R = [zeros(ww,1) wv'];
j = A(:,1);
v = A(:,2);
for p = 1:ww
L = v < wv(p);
if p > 1
L = L & v >= wv(p-1);
end
R(p,1) = mean(j(L));
end
plot(R(:,2),R(:,1));
