Tall array read csv file

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Safwana Razak 2019-11-19

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https://ww2.mathworks.cn/matlabcentral/answers/491862-tall-array-read-csv-file

评论： dpb 2019-11-20

Hi why i am encounter this error while train my tall array data in machine learning model?

Error using matlab.io.datastore.TabularTextDatastore/readData (line 77)
Mismatch between file and format character vector.
Trouble reading 'Numeric' field from file (row number 6738, field number 4) ==> I/O Timeout,I/O Timeout,I/O
Timeout,I/O Timeout,I/O Timeout,I/O Timeout,I/O Timeout,I/O Timeout,I/O Timeout,I/O Timeout,I/O Timeout,I/O
Timeout,I/O Timeout,I/O Timeout,I/O Timeout,I/O Timeout,I/O Time...
Learn more about errors encountered during GATHER.

FYI my csv file go (200000x344). i tried to remove row number 6738 but the error still occur.

please advise.

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Safwana Razak 2019-11-20

hi,

i already found the problem. my file contain the worng data in row 56892 but it the error its stated 6738, maybe because tall array already chucked my data.

BTW, thanks for your reply.

dpb 2019-11-20

"the worng data in row 56892 but it the error its stated 6738, "

I've not used the tall array stuff, but apparently the error message line count is coming from the segment in use rather than being referenced back to the beginning of the file. That's probably worth a "Quality of Implementation" bug report to TMW to make debugging easier.

The klew to what was wrong is that it did echo the offending record content so a search for that string in the file would locate it...

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