table/table-1.0.0¶
A table.
Description
A table is represented as a list of columns, where each entry is a column object, containing the data and some additional information.
The data itself may be stored inline as text, or in binary in either row- or column-major order by use of the strides
property on the individual column arrays.
Each column in the table must have the same first (slowest moving) dimension.
Outline
Schema Definitions ¶
This type is an object with the following properties:
columns
array Required No length restrictionA list of columns in the table.
Items in the array must be any of the following types:
colnames
array Required No length restrictionA list containing the names of the columns in the table (in order).
The first 1 item in the list must be the following types:
No length restrictionstring
qtable
boolean A flag indicating whether or not the serialized type was a QTable
Default value:
False
meta
object Additional free-form metadata about the table.
object
Default value:
{}
Examples ¶
A table stored in column-major order, with each column in a separate block:
!<tag:astropy.org:astropy/table/table-1.0.0>
columns:
- !core/column-1.0.0
data: !core/ndarray-1.0.0
source: 0
datatype: float64
byteorder: little
shape: [3]
description: RA
meta: {foo: bar}
name: a
unit: !unit/unit-1.0.0 deg
- !core/column-1.0.0
data: !core/ndarray-1.0.0
source: 1
datatype: float64
byteorder: little
shape: [3]
description: DEC
name: b
- !core/column-1.0.0
data: !core/ndarray-1.0.0
source: 2
datatype: [ascii, 1]
byteorder: big
shape: [3]
description: The target name
name: c
colnames: [a, b, c]
A table stored in row-major order, all stored in the same block:
!<tag:astropy.org:astropy/table/table-1.0.0>
columns:
- !core/column-1.0.0
data: !core/ndarray-1.0.0
source: 0
datatype: float64
byteorder: little
shape: [3]
strides: [13]
description: RA
meta: {foo: bar}
name: a
unit: !unit/unit-1.0.0 deg
- !core/column-1.0.0
data: !core/ndarray-1.0.0
source: 0
datatype: float64
byteorder: little
shape: [3]
offset: 4
strides: [13]
description: DEC
name: b
- !core/column-1.0.0
data: !core/ndarray-1.0.0
source: 0
datatype: [ascii, 1]
byteorder: big
shape: [3]
offset: 12
strides: [13]
description: The target name
name: c
colnames: [a, b, c]
Original Schema ¶
%YAML 1.1
---
$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
id: "http://astropy.org/schemas/astropy/table/table-1.0.0"
title: >
A table.
description: |
A table is represented as a list of columns, where each entry is a
[column](https://asdf-standard.readthedocs.io/en/latest/generated/stsci.edu/asdf/core/column-1.0.0.html)
object, containing the data and some additional information.
The data itself may be stored inline as text, or in binary in either
row- or column-major order by use of the `strides` property on the
individual column arrays.
Each column in the table must have the same first (slowest moving)
dimension.
examples:
-
- A table stored in column-major order, with each column in a separate block
- asdf-standard-1.5.0
- |
!<tag:astropy.org:astropy/table/table-1.0.0>
columns:
- !core/column-1.0.0
data: !core/ndarray-1.0.0
source: 0
datatype: float64
byteorder: little
shape: [3]
description: RA
meta: {foo: bar}
name: a
unit: !unit/unit-1.0.0 deg
- !core/column-1.0.0
data: !core/ndarray-1.0.0
source: 1
datatype: float64
byteorder: little
shape: [3]
description: DEC
name: b
- !core/column-1.0.0
data: !core/ndarray-1.0.0
source: 2
datatype: [ascii, 1]
byteorder: big
shape: [3]
description: The target name
name: c
colnames: [a, b, c]
-
- A table stored in row-major order, all stored in the same block
- asdf-standard-1.5.0
- |
!<tag:astropy.org:astropy/table/table-1.0.0>
columns:
- !core/column-1.0.0
data: !core/ndarray-1.0.0
source: 0
datatype: float64
byteorder: little
shape: [3]
strides: [13]
description: RA
meta: {foo: bar}
name: a
unit: !unit/unit-1.0.0 deg
- !core/column-1.0.0
data: !core/ndarray-1.0.0
source: 0
datatype: float64
byteorder: little
shape: [3]
offset: 4
strides: [13]
description: DEC
name: b
- !core/column-1.0.0
data: !core/ndarray-1.0.0
source: 0
datatype: [ascii, 1]
byteorder: big
shape: [3]
offset: 12
strides: [13]
description: The target name
name: c
colnames: [a, b, c]
type: object
properties:
columns:
description: |
A list of columns in the table.
type: array
items:
anyOf:
- $ref: "http://stsci.edu/schemas/asdf/core/column-1.0.0"
- $ref: "http://stsci.edu/schemas/asdf/core/ndarray-1.0.0"
- $ref: "http://stsci.edu/schemas/asdf/time/time-1.1.0"
- $ref: "http://stsci.edu/schemas/asdf/unit/quantity-1.1.0"
- $ref: "../coordinates/skycoord-1.0.0"
- $ref: "../coordinates/earthlocation-1.0.0"
- $ref: "../time/timedelta-1.0.0"
colnames:
description: |
A list containing the names of the columns in the table (in order).
type: array
items:
- type: string
qtable:
description: |
A flag indicating whether or not the serialized type was a QTable
type: boolean
default: False
meta:
description: |
Additional free-form metadata about the table.
type: object
default: {}
additionalProperties: false
required: [columns, colnames]