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[請問] Matlab一問
Jun 1st 2014, 18:15, by currycc23

作者currycc23 (curry)

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標題[請問] Matlab一問

時間Sun Jun 1 18:15:29 2014

用Matlab有沒有更方便的方法達到下面兩件事 1.v = [1 2 3 4 5 6]; 某function(v) = [1 -2 3 -4 5 -6] 雖然我有想到使用以下方法達到 v .* repmat([1 -1], 1, 6/2) = [1 2 3 4 5 6] 但是以下這件事就不容易這樣做 2.u = [1 2 3 4 5 6 7]; 某function(u) = [1 -2 3 -4 5 6 -7] 請問有更快的方法可以達到 使某向量一正一負的結果嗎 (盡量不要是for迴圈) -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 140.114.236.156 ※ 文章網址: http://www.ptt.cc/bbs/ask/M.1401617731.A.625.html

→ wxtab019:如果有一堆陣列大小一樣的要做 就寫個對角線矩陣去乘就好 06/01 18:22

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