How would I fix this code?

I'm not sure how to fix this error.

[James Tursa]

Please do not post images of code and text. Instead, copy & paste the entire code & entire error message into your Question as text, then highlight it and push the { } Code button to format it.

[OCDER]

The error message tells you how to fix the code sort of.

Error using eig
Input to EIG must not contain NaN or Inf.

Error in Rect (line 45)
[eig_vec, eig_val] = eig(I1I2)

Every time you get an error, you should do some basic debugging to resolve the problem:

1. At this point, you should be thinking, "why does my input to eig have NaN or Inf?"
2. What is in I1I2? Let's disp(I1I2)
3. Hm, there is a NaN or Inf. Replace these with 0? Or prevent NaN and Inf calculation results in earlier steps?

[Aquatris]

He has the same question in another post with his code copied. One of the variables in his function becomes a division by zero and becomes NaN, hence when the later variable that relies on the now NaN variable, eig function gives error.