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MathGroup Archive 2004

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RE: Matrix Manipulation: deletion of rows and columns

  • To: mathgroup at smc.vnet.net
  • Subject: [mg49300] RE: [mg49299] Matrix Manipulation: deletion of rows and columns
  • From: "Florian Jaccard" <florian.jaccard at eiaj.ch>
  • Date: Tue, 13 Jul 2004 04:32:31 -0400 (EDT)
  • Reply-to: <florian.jaccard at eiaj.ch>
  • Sender: owner-wri-mathgroup at wolfram.com

If you want to delete the rows 2 and 4, and the columns 6 and 17 , you can
do it like this :

In[1]:=
matr=Table[a[i,j],{i,1,20},{j,1,20}]

In[2]:=
matr2=Delete[matr,{{2},{4}}]

In[3]:=
matr3=Delete[Transpose[matr2],{{6},{17}}]//Transpose

Regards

F.Jaccard

-----Message d'origine-----
De : Mukhtar [mailto:mbekkali at gmail.com]
Envoyé : lun., 12. juillet 2004 08:12
À : mathgroup at smc.vnet.net
Objet : [mg49299] Matrix Manipulation: deletion of rows and columns


Is there a way to delete rows or/and columns of a matrix, say delete
rows 2,4 and 6,17 of 20x20 matrix and form a new matrix from the
remaining rows and columns.




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