How to get all combinations from this matrix?

Question

Robu Robert 2021-4-21

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/809040-how-to-get-all-combinations-from-this-matrix

回答： Bruno Luong 2021-4-24

Hello, everyone! Can someone help me with this? I want to use allcomb function for any matrix, any ideas how can I do this besides writing down every line of the vector?

ch=['MRWI'
    'IDMZ'
    'CGBI'
    'JKNO']
v=[];
[x,y]=size(ch);
allcomb(ch(1,:),ch(2,:),ch(3,:),ch(4,:))

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David Hill 2021-4-21

It is unclear what your expected output should be, show us your expected output.

Robu Robert 2021-4-21

The output should be all possible combinations between letters of the rows, taken 1 from each row. I pasted down the correct output. My question is how to generalize allcomb(ch(1,:),ch(2,:),ch(3,:),ch(4,:)) to work for every input matrix.

'MICJ'

'MICK'

'MICN'

'MICO'

'MIGJ'

'MIGK'

'MIGN'

'MIGO'

'MIBJ'

'MIBK'

'MIBN'

'MIBO'

'MIIJ'

'MIIK'

'MIIN'

'MIIO'

'MDCJ'

'MDCK'

'MDCN'

'MDCO'

'MDGJ'

'MDGK'

'MDGN'

'MDGO'

'MDBJ'

'MDBK'

'MDBN'

'MDBO'

'MDIJ'

'MDIK'

'MDIN'

'MDIO'

'MMCJ'

'MMCK'

'MMCN'

'MMCO'

'MMGJ'

'MMGK'

'MMGN'

'MMGO'

'MMBJ'

'MMBK'

'MMBN'

'MMBO'

'MMIJ'

'MMIK'

'MMIN'

'MMIO'

'MZCJ'

'MZCK'

'MZCN'

'MZCO'

'MZGJ'

'MZGK'

'MZGN'

'MZGO'

'MZBJ'

'MZBK'

'MZBN'

'MZBO'

'MZIJ'

'MZIK'

'MZIN'

'MZIO'

'RICJ'

'RICK'

'RICN'

'RICO'

'RIGJ'

'RIGK'

'RIGN'

'RIGO'

'RIBJ'

'RIBK'

'RIBN'

'RIBO'

'RIIJ'

'RIIK'

'RIIN'

'RIIO'

'RDCJ'

'RDCK'

'RDCN'

'RDCO'

'RDGJ'

'RDGK'

'RDGN'

'RDGO'

'RDBJ'

'RDBK'

'RDBN'

'RDBO'

'RDIJ'

'RDIK'

'RDIN'

'RDIO'

'RMCJ'

'RMCK'

'RMCN'

'RMCO'

'RMGJ'

'RMGK'

'RMGN'

'RMGO'

'RMBJ'

'RMBK'

'RMBN'

'RMBO'

'RMIJ'

'RMIK'

'RMIN'

'RMIO'

'RZCJ'

'RZCK'

'RZCN'

'RZCO'

'RZGJ'

'RZGK'

'RZGN'

'RZGO'

'RZBJ'

'RZBK'

'RZBN'

'RZBO'

'RZIJ'

'RZIK'

'RZIN'

'RZIO'

'WICJ'

'WICK'

'WICN'

'WICO'

'WIGJ'

'WIGK'

'WIGN'

'WIGO'

'WIBJ'

'WIBK'

'WIBN'

'WIBO'

'WIIJ'

'WIIK'

'WIIN'

'WIIO'

'WDCJ'

'WDCK'

'WDCN'

'WDCO'

'WDGJ'

'WDGK'

'WDGN'

'WDGO'

'WDBJ'

'WDBK'

'WDBN'

'WDBO'

'WDIJ'

'WDIK'

'WDIN'

'WDIO'

'WMCJ'

'WMCK'

'WMCN'

'WMCO'

'WMGJ'

'WMGK'

'WMGN'

'WMGO'

'WMBJ'

'WMBK'

'WMBN'

'WMBO'

'WMIJ'

'WMIK'

'WMIN'

'WMIO'

'WZCJ'

'WZCK'

'WZCN'

'WZCO'

'WZGJ'

'WZGK'

'WZGN'

'WZGO'

'WZBJ'

'WZBK'

'WZBN'

'WZBO'

'WZIJ'

'WZIK'

'WZIN'

'WZIO'

'IICJ'

'IICK'

'IICN'

'IICO'

'IIGJ'

'IIGK'

'IIGN'

'IIGO'

'IIBJ'

'IIBK'

'IIBN'

'IIBO'

'IIIJ'

'IIIK'

'IIIN'

'IIIO'

'IDCJ'

'IDCK'

'IDCN'

'IDCO'

'IDGJ'

'IDGK'

'IDGN'

'IDGO'

'IDBJ'

'IDBK'

'IDBN'

'IDBO'

'IDIJ'

'IDIK'

'IDIN'

'IDIO'

'IMCJ'

'IMCK'

'IMCN'

'IMCO'

'IMGJ'

'IMGK'

'IMGN'

'IMGO'

'IMBJ'

'IMBK'

'IMBN'

'IMBO'

'IMIJ'

'IMIK'

'IMIN'

'IMIO'

'IZCJ'

'IZCK'

'IZCN'

'IZCO'

'IZGJ'

'IZGK'

'IZGN'

'IZGO'

'IZBJ'

'IZBK'

'IZBN'

'IZBO'

'IZIJ'

'IZIK'

'IZIN'

'IZIO'

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Answer 1

Bruno Luong 2021-4-24

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/809040-how-to-get-all-combinations-from-this-matrix#answer_683680

在 MATLAB Online 中打开

ch=['MRWI'
'IDMZ'
'CGBI'
'JKNO'];
c=num2cell(ch,2);
[c{:}]=ndgrid(c{:});
n=size(c,1);
c = reshape(cat(n+1,c{:}),[],n)
c = 256×4 char array
    'MICJ'
    'RICJ'
    'WICJ'
    'IICJ'
    'MDCJ'
    'RDCJ'
    'WDCJ'
    'IDCJ'
    'MMCJ'
    'RMCJ'
    'WMCJ'
    'IMCJ'
    'MZCJ'
    'RZCJ'
    'WZCJ'
    'IZCJ'
    'MIGJ'
    'RIGJ'
    'WIGJ'
    'IIGJ'
    'MDGJ'
    'RDGJ'
    'WDGJ'
    'IDGJ'
    'MMGJ'
    'RMGJ'
    'WMGJ'
    'IMGJ'
    'MZGJ'
    'RZGJ'
    'WZGJ'
    'IZGJ'
    'MIBJ'
    'RIBJ'
    'WIBJ'
    'IIBJ'
    'MDBJ'
    'RDBJ'
    'WDBJ'
    'IDBJ'
    'MMBJ'
    'RMBJ'
    'WMBJ'
    'IMBJ'
    'MZBJ'
    'RZBJ'
    'WZBJ'
    'IZBJ'
    'MIIJ'
    'RIIJ'
    'WIIJ'
    'IIIJ'
    'MDIJ'
    'RDIJ'
    'WDIJ'
    'IDIJ'
    'MMIJ'
    'RMIJ'
    'WMIJ'
    'IMIJ'
    'MZIJ'
    'RZIJ'
    'WZIJ'
    'IZIJ'
    'MICK'
    'RICK'
    'WICK'
    'IICK'
    'MDCK'
    'RDCK'
    'WDCK'
    'IDCK'
    'MMCK'
    'RMCK'
    'WMCK'
    'IMCK'
    'MZCK'
    'RZCK'
    'WZCK'
    'IZCK'
    'MIGK'
    'RIGK'
    'WIGK'
    'IIGK'
    'MDGK'
    'RDGK'
    'WDGK'
    'IDGK'
    'MMGK'
    'RMGK'
    'WMGK'
    'IMGK'
    'MZGK'
    'RZGK'
    'WZGK'
    'IZGK'
    'MIBK'
    'RIBK'
    'WIBK'
    'IIBK'
    'MDBK'
    'RDBK'
    'WDBK'
    'IDBK'
    'MMBK'
    'RMBK'
    'WMBK'
    'IMBK'
    'MZBK'
    'RZBK'
    'WZBK'
    'IZBK'
    'MIIK'
    'RIIK'
    'WIIK'
    'IIIK'
    'MDIK'
    'RDIK'
    'WDIK'
    'IDIK'
    'MMIK'
    'RMIK'
    'WMIK'
    'IMIK'
    'MZIK'
    'RZIK'
    'WZIK'
    'IZIK'
    'MICN'
    'RICN'
    'WICN'
    'IICN'
    'MDCN'
    'RDCN'
    'WDCN'
    'IDCN'
    'MMCN'
    'RMCN'
    'WMCN'
    'IMCN'
    'MZCN'
    'RZCN'
    'WZCN'
    'IZCN'
    'MIGN'
    'RIGN'
    'WIGN'
    'IIGN'
    'MDGN'
    'RDGN'
    'WDGN'
    'IDGN'
    'MMGN'
    'RMGN'
    'WMGN'
    'IMGN'
    'MZGN'
    'RZGN'
    'WZGN'
    'IZGN'
    'MIBN'
    'RIBN'
    'WIBN'
    'IIBN'
    'MDBN'
    'RDBN'
    'WDBN'
    'IDBN'
    'MMBN'
    'RMBN'
    'WMBN'
    'IMBN'
    'MZBN'
    'RZBN'
    'WZBN'
    'IZBN'
    'MIIN'
    'RIIN'
    'WIIN'
    'IIIN'
    'MDIN'
    'RDIN'
    'WDIN'
    'IDIN'
    'MMIN'
    'RMIN'
    'WMIN'
    'IMIN'
    'MZIN'
    'RZIN'
    'WZIN'
    'IZIN'
    'MICO'
    'RICO'
    'WICO'
    'IICO'
    'MDCO'
    'RDCO'
    'WDCO'
    'IDCO'
    'MMCO'
    'RMCO'
    'WMCO'
    'IMCO'
    'MZCO'
    'RZCO'
    'WZCO'
    'IZCO'
    'MIGO'
    'RIGO'
    'WIGO'
    'IIGO'
    'MDGO'
    'RDGO'
    'WDGO'
    'IDGO'
    'MMGO'
    'RMGO'
    'WMGO'
    'IMGO'
    'MZGO'
    'RZGO'
    'WZGO'
    'IZGO'
    'MIBO'
    'RIBO'
    'WIBO'
    'IIBO'
    'MDBO'
    'RDBO'
    'WDBO'
    'IDBO'
    'MMBO'
    'RMBO'
    'WMBO'
    'IMBO'
    'MZBO'
    'RZBO'
    'WZBO'
    'IZBO'
    'MIIO'
    'RIIO'
    'WIIO'
    'IIIO'
    'MDIO'
    'RDIO'
    'WDIO'
    'IDIO'
    'MMIO'
    'RMIO'
    'WMIO'
    'IMIO'
    'MZIO'
    'RZIO'
    'WZIO'
    'IZIO'

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How to get all combinations from this matrix?

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