data.table equivalent in matlab
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Hi everybody,
I am coming from R and used the data.table package a lot to filter, group, and aggregate large datasets. Is there an equivalent in Matlab?
Best,
2 个评论
per isakson
2019-3-18
"large datasets" how large are these datasets compared to the physical memory of the computer?
Simon493
2019-3-18
采纳的回答
Luna
2019-3-15
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Simon493
2019-3-18
You should check datastore and databasedatastore I can recommend you. (if you are working with large tables)
I am sure you can find what functions you need with a little bit research on that. Also you can overview tall arrays, too.
note: Primary keys are also exist in tables in Matlab, too.
Join Tables (check innerjoin and outerjoin functions, too)
Add Delete Table Variables (check addvars | inner2outer | mergevars | movevars | removevars | rows2vars | splitvars | table)
Please don't forget to look at See Also section on the bottom of the pages. There are useful functions and topics in there.
note2: if you want to access a specific data in your table, use logical indexing instead of cellfun arrayfun or varfun. It will be way much faster. You should read Loren's article in here:
Simon493
2019-3-18
Luna
2019-3-18
Your welcome :)
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