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作者 KingSteven 在 PTT [ MATLAB ] 看板的留言(推文), 共13則

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[問題] cell array of string搜尋

[ MATLAB ]4 留言, 推噓總分: +1

作者: KingSteven - 發表於 2014/01/20 11:36(10年前)

4^F→KingSteven:喔喔感謝,我都忘了有cellfun這招XDDDDDD01/20 13:57

[問題] summation

[ MATLAB ]16 留言, 推噓總分: +4

作者: KingSteven - 發表於 2014/01/03 11:06(10年前)

2^F→KingSteven:其實我是要加總三維的vector,複雜很多.01/03 11:20

3^F→KingSteven:不過sum(reshape(......))這概念不錯,感覺可行01/03 11:20

6^F→KingSteven:我是要加總一個維度(120,160,92)的東西,希望用(4,4,4)01/03 12:18

7^F→KingSteven:的cube做加總,所以我reshape成(4,30,4,40,4,23)01/03 12:19

8^F→KingSteven:然後再sum(sum(sum(...,1),3),5).這樣應該沒錯吧?!01/03 12:20

15^F→KingSteven:大概懂樓上的意思,用convolution的概念01/08 15:11

16^F→KingSteven:不過目前用sum(reshape(...))最簡潔,只有兩行01/08 15:12

Re: [問題] 矩陣維度與運算速度之間的關係

[ MATLAB ]3 留言, 推噓總分: +2

作者: KingSteven - 發表於 2011/12/17 15:47(12年前)

3^F→KingSteven:什麼時候它會開平行處理阿?12/20 09:39

[問題] 矩陣維度與運算速度之間的關係

[ MATLAB ]8 留言, 推噓總分: +2

作者: KingSteven - 發表於 2011/12/14 11:39(12年前)

3^F→KingSteven:我知道,我只是想問問為何速度會差40倍12/15 09:53

5^F→KingSteven:initialization跟速度有什麼關係?12/16 20:07

7^F→KingSteven:喔喔有,我只是沒寫出來,矩陣大小有事先訂好12/17 15:39

8^F→KingSteven:後來發現是Matlab自己會開外掛12/17 15:40

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