altair.TopLevelLayerSpec

class altair.TopLevelLayerSpec(layer=Undefined, autosize=Undefined, background=Undefined, config=Undefined, data=Undefined, datasets=Undefined, description=Undefined, encoding=Undefined, height=Undefined, name=Undefined, padding=Undefined, params=Undefined, projection=Undefined, resolve=Undefined, title=Undefined, transform=Undefined, usermeta=Undefined, view=Undefined, width=Undefined, **kwds)

TopLevelLayerSpec schema wrapper

Mapping(required=[layer])

Attributes

layerList(anyOf(LayerSpec, UnitSpec))

Layer or single view specifications to be layered.

Note : Specifications inside layer cannot use row and column channels as layering facet specifications is not allowed. Instead, use the facet operator and place a layer inside a facet.

autosizeanyOf(AutosizeType, AutoSizeParams)

How the visualization size should be determined. If a string, should be one of "pad", "fit" or "none". Object values can additionally specify parameters for content sizing and automatic resizing.

Default value : pad

backgroundanyOf(Color, ExprRef)

CSS color property to use as the background of the entire view.

Default value: "white"

configConfig

Vega-Lite configuration object. This property can only be defined at the top-level of a specification.

dataanyOf(Data, None)

An object describing the data source. Set to null to ignore the parent’s data source. If no data is set, it is derived from the parent.

datasetsDatasets

A global data store for named datasets. This is a mapping from names to inline datasets. This can be an array of objects or primitive values or a string. Arrays of primitive values are ingested as objects with a data property.

descriptionstring

Description of this mark for commenting purpose.

encodingSharedEncoding

A shared key-value mapping between encoding channels and definition of fields in the underlying layers.

heightanyOf(float, string, Step)

The height of a visualization.

• For a plot with a continuous y-field, height should be a number. - For a plot with either a discrete y-field or no y-field, height can be either a number indicating a fixed height or an object in the form of {step: number} defining the height per discrete step. (No y-field is equivalent to having one discrete step.) - To enable responsive sizing on height, it should be set to "container".

Default value: Based on config.view.continuousHeight for a plot with a continuous y-field and config.view.discreteHeight otherwise.

Note: For plots with row and column channels, this represents the height of a single view and the "container" option cannot be used.

See also: height documentation.

namestring

Name of the visualization for later reference.

paddinganyOf(Padding, ExprRef)

The default visualization padding, in pixels, from the edge of the visualization canvas to the data rectangle. If a number, specifies padding for all sides. If an object, the value should have the format {"left": 5, "top": 5, "right": 5, "bottom": 5} to specify padding for each side of the visualization.

Default value : 5

paramsList(Parameter)

Dynamic variables that parameterize a visualization.

projectionProjection

An object defining properties of the geographic projection shared by underlying layers.

resolveResolve

Scale, axis, and legend resolutions for view composition specifications.

titleanyOf(Text, TitleParams)

Title for the plot.

transformList(Transform)

An array of data transformations such as filter and new field calculation.

usermetaDictunknown

Optional metadata that will be passed to Vega. This object is completely ignored by Vega and Vega-Lite and can be used for custom metadata.

viewViewBackground

An object defining the view background’s fill and stroke.

Default value: none (transparent)

widthanyOf(float, string, Step)

The width of a visualization.

• For a plot with a continuous x-field, width should be a number. - For a plot with either a discrete x-field or no x-field, width can be either a number indicating a fixed width or an object in the form of {step: number} defining the width per discrete step. (No x-field is equivalent to having one discrete step.) - To enable responsive sizing on width, it should be set to "container".

Default value: Based on config.view.continuousWidth for a plot with a continuous x-field and config.view.discreteWidth otherwise.

Note: For plots with row and column channels, this represents the width of a single view and the "container" option cannot be used.

See also: width documentation.

$schemastring

URL to JSON schema for a Vega-Lite specification. Unless you have a reason to change this, use https://vega.github.io/schema/vega-lite/v4.json. Setting the $schema property allows automatic validation and autocomplete in editors that support JSON schema.

__init__(layer=Undefined, autosize=Undefined, background=Undefined, config=Undefined, data=Undefined, datasets=Undefined, description=Undefined, encoding=Undefined, height=Undefined, name=Undefined, padding=Undefined, params=Undefined, projection=Undefined, resolve=Undefined, title=Undefined, transform=Undefined, usermeta=Undefined, view=Undefined, width=Undefined, **kwds)

Methods

__init__([layer, autosize, background, ...])
copy([deep, ignore])	Return a copy of the object
from_dict(dct[, validate, _wrapper_classes])	Construct class from a dictionary representation
from_json(json_string[, validate])	Instantiate the object from a valid JSON string
resolve_references([schema])	Resolve references in the context of this object's schema or root schema.
to_dict([validate, ignore, context])	Return a dictionary representation of the object
to_json([validate, ignore, context, indent, ...])	Emit the JSON representation for this object as a string.
validate(instance[, schema])	Validate the instance against the class schema in the context of the rootschema.
validate_property(name, value[, schema])	Validate a property against property schema in the context of the rootschema