how to sort rows

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andrew
andrew 2014-1-29
回答： Azzi Abdelmalek 2014-1-29
I have a dataset with the following in a column with data
  • (1,A1)
  • (1,B1)
  • (1,C1)
  • (1,A2)
  • (1,B2)
  • (1,C2)
  • (1,A3)
  • (1,B3)
  • (1,C3)
How do I sort the column so that the out come is:
  • (1,A1)
  • (1,A2)
  • (1,A3)
  • (1,B1)
  • (1,B2)
  • (1,B3)
  • (1,C1)
  • (1,C2)
  • (1,C3)
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andrew
andrew 2014-1-29
Yes it is a cell array
Walter Roberson
Walter Roberson 2014-1-29
Is it a cell array of strings, or is it an N x 2 cell array with the first column numeric and the second column something else ?

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回答（2 个）

Amit
Amit 2014-1-29
sort(M)
Azzi Abdelmalek
Azzi Abdelmalek 2014-1-29
M={'(1,A1)'
'(1,B1)'
'(1,C1)'
'(1,A2)'
'(1,B2)'
'(1,C2)'
'(1,A3)'
'(1,B3)'
'(1,C3)'}
%M='(1,A1)'
c1=cellfun(@(x) x{1},regexp(M,'(?<=\().+(?=\,)','match'),'un',0)
c2=cellfun(@(x) x{1},regexp(M,'(?<=\,).+(?=\))','match'),'un',0)
[idx,idx]=sort(c2)
out=M(idx)

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