Datasets

The Galaxy Witness project provides a set of datasets and a TAP service to query them.

Currently, you can use several datasets and TAP service. Soon, we plan to add more datasets containing a large corpus of data.

Available datasets

In this section, we describe the datasets available in the terminal user interface and their characteristics.

Galaxies_400K (Galaxies_400K.csv)
Galaxies_1KK (Galaxies_1KK.csv)

TAP service

The TAP service is a web service that allows you to query the available datasets. In this section, we describe the TAP services available in the tterminal user interface and their characteristics.

RCSED (”http://rcsed-vo.sai.msu.ru/tap/”)
Simbad (”http://simbad.u-strasbg.fr/simbad/sim-tap”)
Ned (”http://ned.ipac.caltech.edu/tap”)
Coming soon

Programming interface for datasets

class galaxywitness.datasets.Dataset(name: str)[source]

Class to handle prepared datasets

Parameters:: name (str) – name of dataset

add_new_dataset(name: str, url: str) → None[source]

Add new dataset by name and by URL where it can be retrieved

Parameters:

name (str) – name of dataset
name – URL

change_dataset_to(name: str) → None[source]

Change current dataset to another by name

Parameters:: name (str) – name of dataset

download(chunk_size=1024) → None[source]: Download current prepared dataset

download_via_tap(size: int = 100000) → None[source]

Download current prepared dataset via TAP

Parameters:: size (int) – size of dataset