How to rearrange matrix and delet similar value ?

2014 6 16
2 个回答
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更新时间：2014 6 17
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Hi guys
I have matrix and should rearrange matrix and delete similar value as next:
the origin matrix
0 0 10 150 150 0 125 150 0 10 125 150
0 0 80 0 0 70 80 55 70 80 80 55
what I need
0 0 10 125 150 150
0 70 80 80 55 0
What's program i need hould do:
  1. when values of column are similar then delete column that repeated
  2. rearrange column according first line

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Andrei Bobrov
Andrei Bobrov 2014-6-16
编辑：Andrei Bobrov 2014-6-17

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a=[ 0 0 10 150 150 0 125 150 0 10 125 150
0 0 80 0 0 70 80 55 70 80 80 55]
out = unique(a.','rows')'
add
a0 = unique(a.','rows');
t = ismember(a0(:,1),a0(size(a0,1),1));
a0(t,2) = sort(a0(t,2),'descend');
out = a0.';
Please read about functions unique, size, ismember, sort.

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Mech
Mech 2014-6-16
out =
0 0 10 125 150 150
0 70 80 80 0 55
thank you very much andrei
  1. Can you explane the command more than
  2. Can you add to command to put the value according 2nd line when the value of 1st line is same to have result like this :
0 0 10 125 150 150
0 70 80 80 55 0
Andrei Bobrov
Andrei Bobrov 2014-6-17
Please see code in my answer after word 'add'.

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Mech
Mech 2014-6-16

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Andrei Bobrov waiting you :)

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José-Luis
José-Luis 2014-6-16
Please try reading the documentation.
doc unique
José-Luis
José-Luis 2014-6-16
Type
doc unique
in the command editor and press "Enter"
José-Luis
José-Luis 2014-6-16
That's not a very useful statement, I'm afraid. You could always google, as all the documentation is online.

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