Check if condition happened in previous values

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Alex Regner
Alex Regner 2022-2-15
编辑： DGM 2022-2-15
cctbbo = 100.*(Close + 2.*movstd(Close,[BBOlength 0]) - movavg(Close, 'simple', BBOMAlength ))./(4 .*movstd(Close,[BBOlength 0]));
BBobline = 80;
BBosline = 20;
sl1 = cctbbo < BBosline;
Basically I need to check if sl1 is true for any of the previous 20 values at any point in the vector Close. Pretty new to MatLab so I'd appreciate the help. Thanks!

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回答（1 个）

DGM
DGM 2022-2-15
编辑：DGM 2022-2-15
Ran in:
Consider the simplified example:
cctbbo = randi([10 99],1,40);
BBosline = 20;
sl1 = cctbbo < BBosline; % some logical vector
wsize = 5; % shorter window for demonstration
sl2 = imdilate(sl1,[zeros(1,wsize+1) ones(1,wsize)]); % offset moving maximum filter
[sl1; sl2] % compare input and output
ans = 2×40 logical array
0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 1 1 1 1 1 0 1 1 1 1 1 0 0 0 0 0 0 0 0 0

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