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Got an indexing error here. Please recommend an answer.

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Virajan Verma
Virajan Verma 2018-10-16
关闭： MATLAB Answer Bot 2021-8-20
for i=1:9
N_matrix(1,i)=N(rem(i,3))*ex(i)/3; %(ERROR HERE)
end
Attempted to access N(0); index must be a positive integer or logical.
Error in practisee2 (line 227)
N_matrix(1,i+1)=N(rem(i+1,3))*ex(i+1)/3;
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KSSV
KSSV 2018-10-16
N is a matrix formed from Shape functions. It is related FEM (Finite Element Method) stuff.

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回答（1 个）

Walter Roberson
Walter Roberson 2018-10-16
N_matrix(1,i)=N(rem(i-1,3)+1)*ex(i)/3; %(ERROR HERE)
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KSSV
KSSV 2018-10-16
Will this expression will result in the same output ..You try....play with values see the output..make a note..change the values....compare the output...remember you are learning..this is the way to learn.
Walter Roberson
Walter Roberson 2018-10-16
"Will this expression will result in the same output??"
No. Your original expression outputs an error message, whereas my proposed expression will execute.

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