How can I make matrix choose?

>> m=[60;90;90;180;125.3;90;60;45;135]
N=zeros(1,numel(m)); % your N should be here instead of this
N(m==0 | m==180)=0;
N(m==90)=1;
N(m==45 | m==135)=0.5;
N = N'
m =
     60.0000
     90.0000
     90.0000
    180.0000
    125.3000
     90.0000
     60.0000
     45.0000
    135.0000
N =
           0
      1.0000
      1.0000
           0
           0
      1.0000
           0
      0.5000
      0.5000
>>

23 个评论
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madhan ravi 2018-10-21

its ok it happens you will improve sooner :) , explain with steps what you are trying to achieve lets debug together

Mahmoud Sami 2018-10-21

My master is to get optimization for cost in a piping design system. The cost of piping depends on piping weight. So the piping lenght,diameter and other components is the major items L, OD, N. So I need to know the shortest path, then optimize the diameter and calculate the cost. N is no of elbows in system the degree of elbows affects cost as it affect industry. So need to change the angle between segments to 90 or 45 and minimize no. Of elbows also. The penalty fcn for genetic algorithms is to put penalty to cost if ang is not 90 or 45. To make the optimization not choose it. That's in simple way.

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