Parquet and Matlab

[Marc Allen <al...@gmail.com>]

I'm running into some challenges trying to load an Apache Arrow generated
Parquet file into Matlab using Matlab's parquetread() function. A few of
the columns are vector data, i.e. a time series of [[x], [y], [z]]. The
scalar columns seem to load correctly, but the vector columns yield an
error "Variable foo has unsupported combination of Parquet physical type
DOUBLE and Parquet logical type NONE".

Has anyone had success doing this with Arrow/Parquet/Matlab?

Thanks,

-Marc

Re: Parquet and Matlab

[Kevin Gurney <kg...@mathworks.com>]

Hi Marc,

Since MATLAB's parquetread function is not maintained as part of the Apache Arrow project, it would probably be best to move this discussion away from the Arrow user's mailing list to avoid any confusion.

Could you please re-post your question on MATLAB Answers<https://www.mathworks.com/matlabcentral/answers/index> or contact MathWorks Technical Support<https://www.mathworks.com/support/contact_us.html> so that a MathWorks representative can assist you further?

Thanks,

Kevin
________________________________
From: Marc Allen <al...@gmail.com>
Sent: Tuesday, September 8, 2020 12:00 PM
To: user@arrow.apache.org <us...@arrow.apache.org>
Subject: Parquet and Matlab

I'm running into some challenges trying to load an Apache Arrow generated Parquet file into Matlab using Matlab's parquetread() function. A few of the columns are vector data, i.e. a time series of [[x], [y], [z]]. The scalar columns seem to load correctly, but the vector columns yield an error "Variable foo has unsupported combination of Parquet physical type DOUBLE and Parquet logical type NONE".

Has anyone had success doing this with Arrow/Parquet/Matlab?

Thanks,

-Marc