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Codegen respond with an error: "??Expected a character vector. "

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Haonan Ding
Haonan Ding 2021-5-8
回答： Paras Gupta 2024-6-21
When I use my training results of DDPG model to generate GPU code, there always respond an error. I followed the instruction "Deploy Trained Reinforcement Learning Policies" from help document, and it runs well in other exmples. Here is error report:
And return code:
>>codegen('-config','cfg','evaluatePolicy','-args',argstr,'-report');
??? Expected a character vector.
Code generation failed: View Error Report
Incorrect use of codegen
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XingZhou Mu
XingZhou Mu 2024-4-14
Hello, did you solve this problem, I am also having the same problem

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回答（1 个）

Paras Gupta
Paras Gupta 2024-6-21
Hello Haonan,
I understand that you're encountering the error "??? Expected a character vector."
This issue could arise if the name of the specified MAT-file or the absolute file path to the MAT-file contains non-ASCII characters, which are not supported by codegen. Please refer to the 'Limitations' section of the following documentation.
https://www.mathworks.com/help/gpucoder/ref/coder.loaddeeplearningnetwork.html
You can also refer to the below documentation for more information on character encoding in code generation:
https://www.mathworks.com/help/coder/ug/code-generation-for-characters.html
Hope this resolves the query.

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