altair.TitleParams

class altair.TitleParams(text=Undefined, align=Undefined, anchor=Undefined, angle=Undefined, baseline=Undefined, color=Undefined, dx=Undefined, dy=Undefined, font=Undefined, fontSize=Undefined, fontStyle=Undefined, fontWeight=Undefined, frame=Undefined, limit=Undefined, lineHeight=Undefined, offset=Undefined, orient=Undefined, style=Undefined, subtitle=Undefined, subtitleColor=Undefined, subtitleFont=Undefined, subtitleFontSize=Undefined, subtitleFontStyle=Undefined, subtitleFontWeight=Undefined, subtitleLineHeight=Undefined, subtitlePadding=Undefined, zindex=Undefined, **kwds)

TitleParams schema wrapper

Mapping(required=[text])

Attributes

textText

The title text.

alignAlign

Horizontal text alignment for title text. One of "left", "center", or "right".

anchorTitleAnchor

The anchor position for placing the title. One of "start", "middle", or "end". For example, with an orientation of top these anchor positions map to a left-, center-, or right-aligned title.

Default value: "middle" for single and layered views. "start" for other composite views.

Note: For now, anchor is only customizable only for single and layered views. For other composite views, anchor is always "start".

anglefloat

Angle in degrees of title and subtitle text.

baselineTextBaseline

Vertical text baseline for title and subtitle text. One of "top", "middle", "bottom", or "alphabetic".

coloranyOf(None, Color)

Text color for title text.

dxfloat

Delta offset for title and subtitle text x-coordinate.

dyfloat

Delta offset for title and subtitle text y-coordinate.

fontstring

Font name for title text.

fontSizefloat

Font size in pixels for title text.

fontStyleFontStyle

Font style for title text.

fontWeightFontWeight

Font weight for title text. This can be either a string (e.g "bold", "normal" ) or a number ( 100, 200, 300, …, 900 where "normal" = 400 and "bold" = 700 ).

frameanyOf(TitleFrame, string)

The reference frame for the anchor position, one of "bounds" (to anchor relative to the full bounding box) or "group" (to anchor relative to the group width or height).

limitfloat

The maximum allowed length in pixels of title and subtitle text.

lineHeightfloat

Line height in pixels for multi-line title text.

offsetfloat

The orthogonal offset in pixels by which to displace the title group from its position along the edge of the chart.

orientTitleOrient

Default title orientation ( "top", "bottom", "left", or "right" )

styleanyOf(string, List(string))

A mark style property to apply to the title text mark.

Default value: "group-title".

subtitleText

The subtitle Text.

subtitleColoranyOf(None, Color)

Text color for subtitle text.

subtitleFontstring

Font name for subtitle text.

subtitleFontSizefloat

Font size in pixels for subtitle text.

subtitleFontStyleFontStyle

Font style for subtitle text.

subtitleFontWeightFontWeight

Font weight for subtitle text. This can be either a string (e.g "bold", "normal" ) or a number ( 100, 200, 300, …, 900 where "normal" = 400 and "bold" = 700 ).

subtitleLineHeightfloat

Line height in pixels for multi-line subtitle text.

subtitlePaddingfloat

The padding in pixels between title and subtitle text.

zindexfloat

The integer z-index indicating the layering of the title group relative to other axis, mark and legend groups.

Default value: 0.

__init__(self, text=Undefined, align=Undefined, anchor=Undefined, angle=Undefined, baseline=Undefined, color=Undefined, dx=Undefined, dy=Undefined, font=Undefined, fontSize=Undefined, fontStyle=Undefined, fontWeight=Undefined, frame=Undefined, limit=Undefined, lineHeight=Undefined, offset=Undefined, orient=Undefined, style=Undefined, subtitle=Undefined, subtitleColor=Undefined, subtitleFont=Undefined, subtitleFontSize=Undefined, subtitleFontStyle=Undefined, subtitleFontWeight=Undefined, subtitleLineHeight=Undefined, subtitlePadding=Undefined, zindex=Undefined, **kwds)

Initialize self. See help(type(self)) for accurate signature.

Methods

__init__(self[, text, align, anchor, angle, …])	Initialize self.
copy(self[, 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(self[, validate, ignore, context])	Return a dictionary representation of the object
to_json(self[, validate, ignore, context, …])	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

copy(self, deep=True, ignore=())

Return a copy of the object

Parameters

deepboolean or list, optional

If True (default) then return a deep copy of all dict, list, and SchemaBase objects within the object structure. If False, then only copy the top object. If a list or iterable, then only copy the listed attributes.

ignorelist, optional

A list of keys for which the contents should not be copied, but only stored by reference.

classmethod from_dict(dct, validate=True, _wrapper_classes=None)

Construct class from a dictionary representation

Parameters

dctdictionary

The dict from which to construct the class

validateboolean

If True (default), then validate the input against the schema.

_wrapper_classeslist (optional)

The set of SchemaBase classes to use when constructing wrappers of the dict inputs. If not specified, the result of cls._default_wrapper_classes will be used.

Returns

objSchema object

The wrapped schema

Raises

jsonschema.ValidationError :

if validate=True and dct does not conform to the schema

classmethod from_json(json_string, validate=True, **kwargs)

Instantiate the object from a valid JSON string

Parameters

json_stringstring

The string containing a valid JSON chart specification.

validateboolean

If True (default), then validate the input against the schema.

**kwargs :

Additional keyword arguments are passed to json.loads

Returns

chartChart object

The altair Chart object built from the specification.

classmethod resolve_references(schema=None)

Resolve references in the context of this object’s schema or root schema.

to_dict(self, validate=True, ignore=None, context=None)

Return a dictionary representation of the object

Parameters

validateboolean or string

If True (default), then validate the output dictionary against the schema. If “deep” then recursively validate all objects in the spec. This takes much more time, but it results in friendlier tracebacks for large objects.

ignorelist

A list of keys to ignore. This will not passed to child to_dict function calls.

contextdict (optional)

A context dictionary that will be passed to all child to_dict function calls

Returns

dctdictionary

The dictionary representation of this object

Raises

jsonschema.ValidationError :

if validate=True and the dict does not conform to the schema

to_json(self, validate=True, ignore=[], context={}, indent=2, sort_keys=True, **kwargs)

Emit the JSON representation for this object as a string.

Parameters

validateboolean or string

If True (default), then validate the output dictionary against the schema. If “deep” then recursively validate all objects in the spec. This takes much more time, but it results in friendlier tracebacks for large objects.

ignorelist

A list of keys to ignore. This will not passed to child to_dict function calls.

contextdict (optional)

A context dictionary that will be passed to all child to_dict function calls

indentinteger, default 2

the number of spaces of indentation to use

sort_keysboolean, default True

if True, sort keys in the output

**kwargs

Additional keyword arguments are passed to json.dumps()

Returns

specstring

The JSON specification of the chart object.

classmethod validate(instance, schema=None)

Validate the instance against the class schema in the context of the rootschema.

classmethod validate_property(name, value, schema=None)

Validate a property against property schema in the context of the rootschema