MATLAB 2018b readtable error after update

Question

Christina Chu 2019-1-24

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/441310-matlab-2018b-readtable-error-after-update

评论： Jeanine 2024-4-3，13:34

采纳的回答： Christina Chu

在 MATLAB Online 中打开

Have a script using

readtable

to read from a .csv file.

Worked fine before a MATLAB update but now no matter how I use readtable, I get this error:

Error using readtable (line 216)

An error occurred while trying to determine whether "readData" is a function name.

How can I fix this? Thanks

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Stephan 2019-1-24

编辑：Stephan 2019-1-24

i have already read about this for the last few days here - maybe another bug?

https://de.mathworks.com/matlabcentral/answers/441088-machine-learning-an-error-occurred-while-trying-to-determine-whether-readdata-is-a-function-name

Or not the same problem?

Annette Hynes 2019-2-4

在 MATLAB Online 中打开

I got a different error when using:

readtable('file.csv')

Error using readtable (line 216)

Delimiter must be a string array, character vector, or cell array of character vectors.

Note: readtable detected the following parameters:

'Delimiter', ',', 'HeaderLines', , 'ReadVariableNames', true, 'Format', ''

I also uninstalled and reinstalled R2018b, and 'readtable' seems to be working now.

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Answer 1

Christina Chu 2019-1-25

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https://ww2.mathworks.cn/matlabcentral/answers/441310-matlab-2018b-readtable-error-after-update#answer_358069

Thanks all for the suggestions. I reinstalled MATLAB 2018b today and that fixed the problem. Going to stay away from the update button.

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Stephan 2019-1-28

i dont rhink this is a good idea. maybe things went wrong, but in general i would recommend to update.

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Answer 2

Jeremy Hughes 2019-1-24

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https://ww2.mathworks.cn/matlabcentral/answers/441310-matlab-2018b-readtable-error-after-update#answer_357901

This is an installation issue. Although this might not resolve the issue try

>> restoredefaultpath

>> rehash toolboxcache

You can check

>> which readData -all

The correct version for readtable is ...matlab/toolbox/shared/io/+matlab/+io/+internal/+text/TableParser.m

If there's something else, then try temporarily renaming the others or removing their folders from the path.

If this still doesn't work you might need help from tech support.

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NICOLE MIN 2020-5-19

I had this issue, please help. ive tried all the possible solution but no avail .

Jeanine 2024-4-3，13:34

I had the "inputs must be a string array" ... etc error after updating MatLab, and this fixed readTable for me, thanks!

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Answer 3

Ilario Gelmetti 2022-1-24

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https://ww2.mathworks.cn/matlabcentral/answers/441310-matlab-2018b-readtable-error-after-update#answer_880655

在 MATLAB Online 中打开

In my case it's a problem with the libraries Matlab includes, so on Arch Linux I solve like this:

Preloading libfreetype library prepending this

LD_PRELOAD=/usr/lib/libfreetype.so.6

to the terminal command I use for running Matlab.

So for R2018a the full command is:

LD_PRELOAD=/usr/lib/libfreetype.so.6 /usr/local/MATLAB/R2018a/bin/matlab

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