How can i solve the Nan error ?

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rakshanda showkat 2021-1-21

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https://ww2.mathworks.cn/matlabcentral/answers/722913-how-can-i-solve-the-nan-error

评论： Bram Schroeders 2021-1-21

code.txt

Dear all,

I am getting NaN results for the Dep matrix as i run the whole code. After i put break point on that line, the expressions in the Dep matrix show their correct value.

As i remove breakpoint and run the whole code, Nan values occur in the terms of Dep matrix.

I have attached the MATLAB file.

Any help would be highly appreciated.

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rakshanda showkat 2021-1-21

thank you sir for reply.

But how does this Aphi value turn to zero on every iteration?

Any help?

Bram Schroeders 2021-1-21

It doesn't turn zero on every iteration. On line 48 you declare Aphi as an zero array with as many rows as iterations.

Then on line 78 you calculate Aphi(1) with an equation.

Then on line 95 you use Aphi(i) as the denominator in an equation.

Then on line 114 you calculate Aphi(i) with another equation.

So when the second iteration starts Aphi(2) is still zero when you arive at line 95, since the second value of Aphi is calculated on line 114. So maybe in line 114 it should be i + 1 or something like that?

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