sorting a matrix in descending order
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I have a matrix
group =
     0     0     0     1
     0     1     0     0
     0     0     1     0
     0     1     0     0
     0     0     0     1
     0     0     1     0
     0     0     1     0
     0     1     0     0
     0     0     0     1
     0     1     0     0
     1     0     0     0
     0     1     0     0
if I want to sort in ascending order I can use
sortrows(group)
ans =
     0     0     0     1
     0     0     0     1
     0     0     0     1
     0     0     1     0
     0     0     1     0
     0     0     1     0
     0     1     0     0
     0     1     0     0
     0     1     0     0
     0     1     0     0
     0     1     0     0
     1     0     0     0
but I want to sort in descending order. What to do?
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Accepted Answer
  the cyclist
      
      
 on 21 Apr 2012
        You can use a second input argument. By omitting it, you have effectively used
sortrows(group,[1 2 3 4])
for the ascending case. I believe what you want for the descending case is
sortrows(group,[-1 -2 -3 -4])
but you should verify that the result.
0 Comments
More Answers (1)
  bym
      
 on 21 Apr 2012
        sort(group,1,'descend')
3 Comments
  Asawari
 on 18 Oct 2013
				Can I use this descend command to arrange any array or matrix in descending order?I am using mesh command to create a curve.Mesh command creates origin of the curve between X-Y plane by default.I want to change the origin from X-Y plane to Y-Z plane and X axis I want to arrange in descending order,I am stuck here,can anyone help?
  the cyclist
      
      
 on 18 Oct 2013
				I suggest you make a new question, with more detail and maybe a small example. Questions buried in comments don't get seen as much.
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