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Showing posts with the label Pytables

Finding A Duplicate In A Hdf5 Pytable With 500e6 Rows

Problem I have a large (> 500e6 rows) dataset that I've put into a pytables database. Lets … Read more Finding A Duplicate In A Hdf5 Pytable With 500e6 Rows

Pandas Pytable: How To Specify Min_itemsize Of The Elements Of A Multiindex

I am storing a pandas dataframe as a pytable which contains a MultiIndex. The first level of the M… Read more Pandas Pytable: How To Specify Min_itemsize Of The Elements Of A Multiindex

Query Hdf5 In Pandas

I have following data (18,619,211 rows) stored as a pandas dataframe object in hdf5 file: … Read more Query Hdf5 In Pandas

Store Pandas Dataframe In Pytables Table Without Storing Index

In many DataFrame.to_foo functions I can specify that I don't want to write the index >>&… Read more Store Pandas Dataframe In Pytables Table Without Storing Index

Unable To Save Dataframe To Hdf5 ("object Header Message Is Too Large")

I have a DataFrame in Pandas: In [7]: my_df Out[7]: Int64Index: 34 entries, 0 to 0 Columns: 2661 … Read more Unable To Save Dataframe To Hdf5 ("object Header Message Is Too Large")

Pytables 2.3.1 With Python 2.5 On Windows: Error - Could Not Find A Local Hdf5 Installation

I'm trying to install PyTables 2.3.1 on Windows XP with Python 2.5. I'm getting the followi… Read more Pytables 2.3.1 With Python 2.5 On Windows: Error - Could Not Find A Local Hdf5 Installation

How To Access Index In A Pandas Hdstore (pytables)

I have a large HDFStore with a multi-index. How can I get a hold of one of the index levels? I see … Read more How To Access Index In A Pandas Hdstore (pytables)

I Want To Convert Very Large Csv Data To Hdf5 In Python

I have a very large csv data. It looks like this. [Date, Firm name, value 1, value 2, ..., value 60… Read more I Want To Convert Very Large Csv Data To Hdf5 In Python