Skip to main content

Crunch.io Cube library

Project description

crunch-cube

Open Source Python implementation of the API for working with CrunchCubes

Introduction

This package contains the implementation of the CrunchCube API. It is used to extract useful information from CrunchCube responses (we'll refer to them as cubes in the subsequent text). Cubes are obtained from the Crunch.io platform, as JSON responses to the specific queries created by the user. These queries specify which data the user wants to extract from the Crunch.io system. The most common usage is to obtain the following:

  • Cross correlation between different variable
  • Margins of the cross tab cube
  • Proportions of the cross tab cube (e.g. proportions of each single element to the entire sample size)
  • Percentages

When the data is obtained from the Crunch.io platform, it needs to be interpreted to the form that's convenient for a user. The actual shape of the cube JSON contains many internal details, which are not of essence to the end-user (but are still necessary for proper cube functionality).

The job of this library is to provide a convenient API that handles those intricacies, and enables the user to quickly and easily obtain (extract) the relevant data from the cube. Such data is best represented in a table-like format. For this reason, the most of the API functions return some form of the ndarray type, from the numpy package. Each function is explained in greater detail, uner its own section, under the API subsection of this document.

Installation

The cr.cube package can be installed by using the pip install:

pip install cr.cube

For developers

For development mode, cr.cube needs to be installed from the local checkout of the crunch-cube repository. It is strongly advised to use virtualenv. Assuming you've created and activated a virtual environment venv, navigate to the top-level folder of the repo, on the local file system, and run:

pip install -e .

or

python setup.py develop

Running tests

To setup and run tests, you will need to install cr.cube as well as testing dependencies. To do this, from the root directory, simply run:

pip install -e .[testing]

And then tests can be run using py.test in the root directory:

pytest

Usage

After the cr.cube package has been successfully installed, the usage is as simple as:

from cr.cube.crunch_cube import CrunchCube

### Obtain the crunch cube JSON from the Crunch.io
### And store it in the 'cube_JSON_response' variable

cube = CrunchCube(cube_JSON_response)
cube.as_array()

### Outputs:
#
# np.array([
#     [5, 2],
#     [5, 3]
# ])

API

as_array

Tabular, or matrix, representation of the cube. The detailed description can be found here.

margin

Calculates margins of the cube. The detailed description can be found here.

proportions

Calculates proportions of single variable elements to the whole sample size. The detailed description can be found here.

percentages

Calculates percentages of single variable elements to the whole sample size. The detailed description can be found here.

Build Status Coverage Status Documentation Status

Changes

1.12.3

  • Bug fix for t_stats scale means

1.12.2

  • Smoothing on scale means

1.12.1

  • Smoothing on column percentages and column index

1.11.37

  • PR 216: Document matrix.py classes and properties

1.11.36

  • Hypotesis testing for subtotals (heading and insertions)

1.11.35

  • Bug fix for hypothesis testing with overlaps

1.11.34

  • Bug fix for augmented MRxMR matrices

1.11.33

  • Manage augmentation for MRxMR matrices

1.11.32

  • Handle hidden option for insertions

For a complete list of changes see history.

Project details


Release history Release notifications | RSS feed

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

cr.cube-1.12.3.tar.gz (1.1 MB view details)

Uploaded Source

Built Distribution

cr.cube-1.12.3-py2-none-any.whl (110.9 kB view details)

Uploaded Python 2

File details

Details for the file cr.cube-1.12.3.tar.gz.

File metadata

  • Download URL: cr.cube-1.12.3.tar.gz
  • Upload date:
  • Size: 1.1 MB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/1.15.0 pkginfo/1.5.0.1 requests/2.23.0 setuptools/44.0.0 requests-toolbelt/0.9.1 tqdm/4.44.1 CPython/2.7.16

File hashes

Hashes for cr.cube-1.12.3.tar.gz
Algorithm Hash digest
SHA256 f30e1ace41c9c26e07c54b4b4ebc005ab84f9849495d8c4db066d5f1c3851c06
MD5 a0adee7630aa8f45e0cd483a4efc02bd
BLAKE2b-256 d79bbd0518fa8342e5a72241f2d099134152e04cc278096e7885495a09937b7e

See more details on using hashes here.

File details

Details for the file cr.cube-1.12.3-py2-none-any.whl.

File metadata

  • Download URL: cr.cube-1.12.3-py2-none-any.whl
  • Upload date:
  • Size: 110.9 kB
  • Tags: Python 2
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/1.15.0 pkginfo/1.5.0.1 requests/2.23.0 setuptools/44.0.0 requests-toolbelt/0.9.1 tqdm/4.44.1 CPython/2.7.16

File hashes

Hashes for cr.cube-1.12.3-py2-none-any.whl
Algorithm Hash digest
SHA256 0f8d823af9bf5378981619e922e2881f0211a0cddde55017af13c67fedf68564
MD5 0a3f8fbba49cd035867eeb4e10205756
BLAKE2b-256 9cbd4cdcf9fd4402346eaa6aa4a2f1e8c42689e589034fc77dcdc956b0c99b62

See more details on using hashes here.

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page