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Showing posts with the label Hdf5

Python H5py: Can I Store A Dataset Which Different Columns Have Different Types?

Suppose I have a table which has many columns, only a few columns is float type, others are small i… Read more Python H5py: Can I Store A Dataset Which Different Columns Have Different Types?

Saving With H5py Arrays Of Different Sizes

I am trying to store about 3000 numpy arrays using HDF5 data format. Arrays vary in length from 530… Read more Saving With H5py Arrays Of Different Sizes

Opening A Corrupted Pytables Hdf5 File

I am hoping for some help in opening a corrupted HDF5 file. I am accessing PyTables via Pandas, but… Read more Opening A Corrupted Pytables Hdf5 File

How To Compress The Data That Saved In Hdf5?

I am using python 2.7 to read a video and store in hdf5. This is my code import h5py import skvideo… Read more How To Compress The Data That Saved In Hdf5?

Adding New Data Into Hdf5 File Results An Empty Array

While playing with HDF5 package for Python I discovered a strange behavior. I want to insert more d… Read more Adding New Data Into Hdf5 File Results An Empty Array

Generating Pcolormesh Images From Very Large Data Sets Saved In H5 Files With Python

I am collecting a large amount of data that will be saved into individual H5 files using h5py. I wo… Read more Generating Pcolormesh Images From Very Large Data Sets Saved In H5 Files With Python

Read Specific Z Component Slice Of 3d Hdf From Python

Does anyone know how to make the modification of the following code so that I can read the specific… Read more Read Specific Z Component Slice Of 3d Hdf From Python

Getting Multiple Datasets From Group In Hdf5

I am comparing two different hdf5 files to make sure that they match. I want to create a list with … Read more Getting Multiple Datasets From Group In Hdf5

Losing Timezone-awareness When Saving Hyerarchical Pandas Datetimeindex To Hdf5 In Python

I'm on pandas 0.14.1. Assume I need to index data by two timestamps in a hierarchical index usi… Read more Losing Timezone-awareness When Saving Hyerarchical Pandas Datetimeindex To Hdf5 In Python

Python H5py - Why Do I Get A Broadcast Error?

I am trying to read a .h5 file data.h5, which has 2 datasets, 'Data' and 'metaData'… Read more Python H5py - Why Do I Get A Broadcast Error?

How To Split The Data Among The Multiple Groups In Hdf5 File?

I have one some data which looks something like this: Generated by trjconv : P/L=1/400 t= 0.00000… Read more How To Split The Data Among The Multiple Groups In Hdf5 File?

Difference Between Str() And Astype(str)?

I want to save the dataframe df to the .h5 file MainDataFile.h5 : df.to_hdf ('c:/Temp/MainData… Read more Difference Between Str() And Astype(str)?

Inserting Many Hdf5 Datasets Very Slow

There is a dramatic slowdown when inserting many datasets into a group. I have found that the slowd… Read more Inserting Many Hdf5 Datasets Very Slow

Hdf5 Core Driver (h5fd_core): Loading Selected Dataset(s)

Currently, I load HDF5 data in python via h5py and read a dataset into memory. f = h5py.File('m… Read more Hdf5 Core Driver (h5fd_core): Loading Selected Dataset(s)

How To Partially Copy Using Python An Hdf5 File Into A New One Keeping The Same Structure?

I have a large hdf5 file that looks something like this: A/B/dataset1, dataset2 A/C/dataset1, datas… Read more How To Partially Copy Using Python An Hdf5 File Into A New One Keeping The Same Structure?

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

Convert .h5 File To .jpg With Python

I currently have a .h5 file containing grayscale imagery. I need to convert it to a .jpg. Does any… Read more Convert .h5 File To .jpg With Python

Convert .h5 File To .jpg With Python

I currently have a .h5 file containing grayscale imagery. I need to convert it to a .jpg. Does any… Read more Convert .h5 File To .jpg With Python