Question
I am a beginner using neural network toolbox. I don't know why but my neural network stop working and keep return Reference to non-existent field 'net_read_only. If I run the network by script it stop after net = patternnet(hiddenLayerSize); and return error: Default value is not a member of type "nntype.performance_fcn". Would someone kindly help me through this problem.
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Expert Answer
John Michell
PhD Expert
Answered Aug 13, 2026
Do you have an older version of the NNTOOLBOX which does not contain PATTERNNET?
lookfor patternnet help patternnet doc patternnet
If so, use NEWPR.
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