How do I load only part of a table saved to a .mat file?

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Kyle Padilla
Kyle Padilla 2022 年 3 月 23 日
回答済み: Kyle Padilla 2022 年 3 月 30 日
I have some large tables stored in .mat files and was wondering if there is a way I could load only some of the data into MATLAB (for example, a subset of rows or columns in a table). I read about the matfile function, but it doesn't seem to work with tables. Whenever I try to load part of a table, I get an error telling me to load the whole table. Is there some way to load partial data that works for tables?


Kyle Padilla
Kyle Padilla 2022 年 3 月 30 日
I found out you can make your table a tall table, which provides a way to work with large amounts of data. You use the tall function and pass in your table. You can write your table to a folder of .mat files using the write function. You then create a datastore and convert it to a tall table. Finally, you can get a subset of the tall table and use the gather function to get the results.

その他の回答 (2 件)

Walter Roberson
Walter Roberson 2022 年 3 月 23 日
No, there is no method provided for that.

Peter Perkins
Peter Perkins 2022 年 3 月 24 日
You might look into using datastores, which would, in effect, allow you to load pieces.
  3 件のコメント
Kyle Padilla
Kyle Padilla 2022 年 3 月 30 日
That might work yeah. I think I figured it how I can do this with .mat files though. Gonna post an answer to my question so others can use it for future reference.



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