Question: 1、how to select the rows(Pseudo code) : columns['Name']='Name_A' (Name_A just a example) & columns['time'] isin (2021-11-21 00:00:00,202 ...
Question: 1、how to select the rows(Pseudo code) : columns['Name']='Name_A' (Name_A just a example) & columns['time'] isin (2021-11-21 00:00:00,202 ...
OSError: Unable to open file (file signature not found) I feel that the problem is .hdf file as I don't have .h5 or .hdf5 file. So how to I open .hd ...
When writing a pandas DataFrame to hdf, if key is set to 'table' then the resulting hdf contains an empty key '/'. Other string values I have tried do ...
I tried this script but I am not able to see the hdf5 file, the script running without errors but I don't see any thing. ...
Motivation: I have about 30 million rows of data, one column being an index value, the other being a list of 512 int32 numbers. I wish to only retrie ...
Suppose, I have several customers today so I am storing their information like customer_id, customer_name, customer_emailid etc. If my customer is lea ...
I have a small script meant to read csv files from a user input directory and convert them to a single HDF5 file: What this is currently doing is a ...
I'm detecting the maximum lengths of all string columns of multiple dataframes, then attempting to build a HDFStore: The detected maximum string le ...
I get the following error when running code containing pytables: python version 3.5.4 | tables version 3.4.2 | windows 10 ...
I am trying to write a function to write and read transaction details to/from a .h5 file. I want to effectively use one file to store some transaction ...
I have a np.array that is too large to store in memory (34000, 34000) hence I need PyTables to store this as an Earray. As I am constrained by memory, ...
Is there some way to prevent writing the integer index of a Dataframe to HDF5, when using ...
When I initialize HDFStore I see an error in flavor.py: NameError, name '_conv_python_to_python' is not defined I am using anaconda and pa ...
I am trying to filter data from large HDF store to the required subset using the attribute where of method read_hdb: According to the documentation ...
I wish to select a date range from my HDFStore using Pandas. I noticed that my datetimes (millisecond frequency) are stored as Unix time with extra ri ...
I try to build a generator for a Keras model which will be trained on a large hdf store. To speed up the training, I pre-calculated all features incl. ...
I have some problems with pandas' HDFStore being far to slow and unfortunately I'm unable to put together a satisfying solution from other questions h ...
I am using python 2.7 with pandas and HDFStore I try to process a big data set, which fits into the disk but not to the memory. I store a large siz ...
Consider the following hdfstore and dataframes df and df2 I want to first write df to the store. At a later point in time I will hav ...
I have several TB of data (in subsets) in flat files that I want to convert to HDF5 using Python Pandas/Pytables/H5py for faster querying and searchin ...