It script "Laplace1.m" works without errors in matlab R2018b, but in Matlab R2019b gives the following error:

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Jose Javier Bernal Garzon
回答： Steven Lord 2020-2-25
Laplace.PNG

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回答（2 个）

Siriniharika Katukam
Hi
When I tried running your code in 2018b and 2019b, I got the same error and found that it occurs in both the releases.
Steven Lord
Steven Lord 2020-2-25
Nowhere in the code you've shown do you show the array place or the function place. [There is a place function in Control System Toolbox but I don't think that's what you're calling in this context.] If it's an array, look at the code that computes it to determine how an element becomes non-positive. If it's a function determine why it's returning a non-positive number.
You can set an error breakpoint to determine the specific indices or input arguments i, j, and n that result in the non-positive index.

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