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

1.9.3

  • Support H&S when calculating Pairwise Comparisons

1.9.2

  • Fix scale_means for Categorical Array (as a 0th slice in Tabbooks) where categorical doesn't have any numerical values

1.9.1

  • Fix scale_means for Categorical Array (as a 0th slice in Tabbooks)

1.9.0

  • Implement pairwise comparisons

1.8.6

  • Fix pruning for single element MRs

1.8.5

  • Fix index_table for MR x MR where either dimension has a only single element

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-1.9.3.tar.gz (834.1 kB view details)

Uploaded Source

Built Distribution

cr.cube-1.9.3-py2-none-any.whl (82.8 kB view details)

Uploaded Python 2

File details

Details for the file cr.cube-1.9.3.tar.gz.

File metadata

  • Download URL: cr.cube-1.9.3.tar.gz
  • Upload date:
  • Size: 834.1 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/1.11.0 pkginfo/1.4.2 requests/2.19.1 setuptools/40.4.1 requests-toolbelt/0.8.0 tqdm/4.26.0 CPython/2.7.10

File hashes

Hashes for cr.cube-1.9.3.tar.gz
Algorithm Hash digest
SHA256 bb98431f36e3e5a1bb8e080cbabff9bc0ca6f3cea428c987128becd5d5e07e5c
MD5 e04a9b1aa08114ab527ccb0fc9fd0598
BLAKE2b-256 9c7391ef3e6d3f552f3e6fc37d6022d34e81cbaba595726afcb545ec861dcf08

See more details on using hashes here.

File details

Details for the file cr.cube-1.9.3-py2-none-any.whl.

File metadata

  • Download URL: cr.cube-1.9.3-py2-none-any.whl
  • Upload date:
  • Size: 82.8 kB
  • Tags: Python 2
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/1.11.0 pkginfo/1.4.2 requests/2.19.1 setuptools/40.4.1 requests-toolbelt/0.8.0 tqdm/4.26.0 CPython/2.7.10

File hashes

Hashes for cr.cube-1.9.3-py2-none-any.whl
Algorithm Hash digest
SHA256 c17af140d2e377e3b25b9ce431ef5dfa554e7db22f14ccec70b8ee4a532cd7bc
MD5 f6045bcf16e5ab0a08cccce0ec7b0164
BLAKE2b-256 a9b6b8e658a6868f4cd087e2598b817b50bf834b8302fac78877b8748615e576

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