why doesn't data.(ChannelFirst) work now? I has worked ok for years

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Don
Don 2022-5-3
编辑： dpb 2022-5-3
Enter name of first channel to analyze : F5
Enter name of second channel to analyze : F3
Unrecognized field name "F5".
Error in SpectralRatioST1 (line 162)
veclength = length(data.(ChannelFirst)); % length of input EEG vector
>> ChannelFirst
ChannelFirst =
'F5'
>> Data.(ChannelFirst)
Unable to resolve the name 'Data.F5'.
  2 个评论
Don
Don 2022-5-3
编辑：Jan 2022-5-3
MATLAB Version: 9.12.0.1884302 (R2022a)
MATLAB License Number: xxxxxxxxxxxx
Operating System: Microsoft Windows 10 Pro Version 10.0 (Build 19043)
Java Version: Java 1.8.0_202-b08 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
-----------------------------------------------------------------------------------------------------
MATLAB Version 9.12 (R2022a)
Signal Processing Toolbox Version 9.0 (R2022a)
Statistics and Machine Learning Toolbox Version 12.3 (R2022a)
Jan
Jan 2022-5-3
What is the contents of "data"? Why is it one time in lower and the other one in upper case?

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