Anaconda Enterprise: Documentation

# bokeh.models.glyphs.Oval

class `bokeh.models.glyphs.``Oval`(**kwargs)

  Render ovals.

  This glyph renders ovals using Bézier curves, which are similar, but not identical to ellipses. In particular, widths equal to heights will not render circles. Use the `Ellipse` glyph for that.

  Example

      import numpy as np

      from bokeh.models import ColumnDataSource, DataRange1d, Plot, LinearAxis, Grid
      from bokeh.models.glyphs import Oval
      from bokeh.io import curdoc, show

      N = 9
      x = np.linspace(-2, 2, N)
      y = x**2

      source = ColumnDataSource(dict(x=x, y=y))

      xdr = DataRange1d()
      ydr = DataRange1d()

      plot = Plot(
          title=None, x_range=xdr, y_range=ydr, plot_width=300, plot_height=300,
          h_symmetry=False, v_symmetry=False, min_border=0, toolbar_location=None)

      glyph = Oval(x="x", y="y", width=0.4, height=0.6, angle=-0.7, fill_color="#1d91d0")
      plot.add_glyph(source, glyph)

      xaxis = LinearAxis()
      plot.add_layout(xaxis, 'below')

      yaxis = LinearAxis()
      plot.add_layout(yaxis, 'left')

      plot.add_layout(Grid(dimension=0, ticker=xaxis.ticker))
      plot.add_layout(Grid(dimension=1, ticker=yaxis.ticker))

      curdoc().add_root(plot)

      show(plot)

  `angle`

    property type: `AngleSpec`

    The angle the ovals are rotated from horizontal. [rad]

  `fill_alpha`

    property type: `NumberSpec`

    The fill alpha values for the ovals.

  `fill_color`

    property type: `ColorSpec`

    The fill color values for the ovals.

  `height`

    property type: `DistanceSpec`

    The overall height of each oval.

  `js_event_callbacks`

    property type: `Dict` ( `String` , `List` ( `Instance` ( `CustomJS` ) ) )

    A mapping of event names to lists of CustomJS callbacks.

    Typically, rather then modifying this property directly, callbacks should be added using the `Model.js_on_event` method:

        callback = CustomJS(code="console.log('tap event occured')")
        plot.js_on_event('tap', callback)

  `js_property_callbacks`

    property type: `Dict` ( `String` , `List` ( `Instance` ( `CustomJS` ) ) )

    A mapping of attribute names to lists of CustomJS callbacks, to be set up on BokehJS side when the document is created.

    Typically, rather then modifying this property directly, callbacks should be added using the `Model.js_on_change` method:

        callback = CustomJS(code="console.log('stuff')")
        plot.x_range.js_on_change('start', callback)

  `line_alpha`

    property type: `NumberSpec`

    The line alpha values for the ovals.

  `line_cap`

    property type: `Enum` ( `LineCap` )

    The line cap values for the ovals.

  `line_color`

    property type: `ColorSpec`

    The line color values for the ovals.

  `line_dash`

    property type: `DashPattern`

    The line dash values for the ovals.

  `line_dash_offset`

    property type: `Int`

    The line dash offset values for the ovals.

  `line_join`

    property type: `Enum` ( `LineJoin` )

    The line join values for the ovals.

  `line_width`

    property type: `NumberSpec`

    The line width values for the ovals.

  `name`

    property type: `String`

    An arbitrary, user-supplied name for this model.

    This name can be useful when querying the document to retrieve specific Bokeh models.

        >>> plot.circle([1,2,3], [4,5,6], name="temp")
        >>> plot.select(name="temp")
        [GlyphRenderer(id='399d53f5-73e9-44d9-9527-544b761c7705', ...)]

    Note

    No uniqueness guarantees or other conditions are enforced on any names that are provided, nor is the name used directly by Bokeh for any reason.

  `subscribed_events`

    property type: `List` ( `String` )

    List of events that are subscribed to by Python callbacks. This is the set of events that will be communicated from BokehJS back to Python for this model.

  `tags`

    property type: `List` ( `Any` )

    An optional list of arbitrary, user-supplied values to attach to this model.

    This data can be useful when querying the document to retrieve specific Bokeh models:

        >>> r = plot.circle([1,2,3], [4,5,6])
        >>> r.tags = ["foo", 10]
        >>> plot.select(tags=['foo', 10])
        [GlyphRenderer(id='1de4c3df-a83d-480a-899b-fb263d3d5dd9', ...)]

    Or simply a convenient way to attach any necessary metadata to a model that can be accessed by CustomJS callbacks, etc.

    Note

    No uniqueness guarantees or other conditions are enforced on any tags that are provided, nor are the tags used directly by Bokeh for any reason.

  `width`

    property type: `DistanceSpec`

    The overall widths of each oval.

  `x`

    property type: `NumberSpec`

    The x-coordinates of the centers of the ovals.

  `y`

    property type: `NumberSpec`

    The y-coordinates of the centers of the ovals.

  `apply_theme`(property_values)

    Apply a set of theme values which will be used rather than defaults, but will not override application-set values.

    The passed-in dictionary may be kept around as-is and shared with other instances to save memory (so neither the caller nor the |HasProps| instance should modify it).

    Parameters: | property_values (dict) – theme values to use in place of defaults
    Returns: | None

  `dataspecs`()

    Collect the names of all `DataSpec` properties on this class.

    This method always traverses the class hierarchy and includes properties defined on any parent classes.

    Returns: | names of DataSpec properties
    Return type: | set[str]

  `dataspecs_with_props`()

    Collect a dict mapping the names of all `DataSpec` properties on this class to the associated properties.

    This method always traverses the class hierarchy and includes properties defined on any parent classes.

    Returns: | mapping of names and `DataSpec` properties
    Return type: | dict[str, DataSpec]

  `equals`(other)

    Structural equality of models.

    Parameters: | other (HasProps) – the other instance to compare to
    Returns: | True, if properties are structurally equal, otherwise False

  `js_on_change`(event, *callbacks)

    Attach a CustomJS callback to an arbitrary BokehJS model event.

    On the BokehJS side, change events for model properties have the form `"change:property_name"`. As a convenience, if the event name passed to this method is also the name of a property on the model, then it will be prefixed with `"change:"` automatically:

        # these two are equivalent
        source.js_on_change('data', callback)
        source.js_on_change('change:data', callback)

    However, there are other kinds of events that can be useful to respond to, in addition to property change events. For example to run a callback whenever data is streamed to a `ColumnDataSource`, use the `"stream"` event on the source:

        source.js_on_change('streaming', callback)

  `layout`(side, plot)
  `lookup`(name)

    Find the `PropertyDescriptor` for a Bokeh property on a class, given the property name.

    Parameters: | name (str) – name of the property to search for
    Returns: | descriptor for property named `name`
    Return type: | PropertyDescriptor

  `on_change`(attr, *callbacks)

    Add a callback on this object to trigger when `attr` changes.

    Parameters:

    - attr (str) – an attribute name on this object
    - callback (callable) – a callback function to register

    Returns: | None

  `pprint`(verbose=False, max_width=79, newline='\n')

    Print a “pretty” string representation of the object to stdout.

    Note

    This function only functions in the IPython shell or Jupyter Notebooks.

    Parameters:

    - Verbose (bool, optional) – This is a conventional argument for IPython representation printers but is unused by Bokeh. (default: False)
    - max_width (int, optional) – Minimum width to start breaking lines when possible. (default: 79)
    - newline (str, optional) – Character to use to separate each line (default: `\n`)

    Returns: | None
    Raises: | ValueError, if `IPython` cannot be imported

    Examples

        In [1]: from bokeh.models import Range1d

        In [1]: r = Range1d(start=10, end=20)

        In [2]: r.pprint()
        bokeh.models.ranges.Range1d(
            id='1576d21a-0c74-4214-8d8f-ad415e1e4ed4',
            bounds=None,
            callback=None,
            end=20,
            js_property_callbacks={},
            max_interval=None,
            min_interval=None,
            name=None,
            start=10,
            tags=[])

  `pretty`(verbose=False, max_width=79, newline='\n')

    Generate a “pretty” string representation of the object.

    Note

    This function only functions in the IPython shell or Jupyter Notebooks.

    Parameters:

    - Verbose (bool, optional) – This is a conventional argument for IPython representation printers but is unused by Bokeh. (default: False)
    - max_width (int, optional) – Minimum width to start breaking lines when possible. (default: 79)
    - newline (str, optional) – Character to use to separate each line (default: `\n`)

    Returns: | pretty object representation
    Return type: | str
    Raises: | ValueError, if `IPython` cannot be imported

  `properties`(with_bases=True)

    Collect the names of properties on this class.

    This method optionally traverses the class hierarchy and includes properties defined on any parent classes.

    Parameters: | with_bases (bool, optional) – Whether to include properties defined on parent classes in the results. (default: True)
    Returns: | property names
    Return type: | set[str]

  `properties_containers`()

    Collect the names of all container properties on this class.

    This method always traverses the class hierarchy and includes properties defined on any parent classes.

    Returns: | names of container properties
    Return type: | set[str]

  `properties_with_refs`()

    Collect the names of all properties on this class that also have references.

    This method always traverses the class hierarchy and includes properties defined on any parent classes.

    Returns: | names of properties that have references
    Return type: | set[str]

  `properties_with_values`(include_defaults=True)

    Collect a dict mapping property names to their values.

    This method always traverses the class hierarchy and includes properties defined on any parent classes.

    Non-serializable properties are skipped and property values are in “serialized” format which may be slightly different from the values you would normally read from the properties; the intent of this method is to return the information needed to losslessly reconstitute the object instance.

    Parameters: | include_defaults (bool, optional) – Whether to include properties that haven’t been explicitly set since the object was created. (default: True)
    Returns: | mapping from property names to their values
    Return type: | dict

  `query_properties_with_values`(query, include_defaults=True)

    Query the properties values of |HasProps| instances with a predicate.

    Parameters:

    - query (callable) – A callable that accepts property descriptors and returns True or False
    - include_defaults (bool, optional) – Whether to include properties that have not been explicitly set by a user (default: True)

    Returns: | mapping of property names and values for matching properties
    Return type: | dict

  `references`()

    Returns all `Models` that this object has references to.

  `remove_on_change`(attr, *callbacks)

    Remove a callback from this object

  `select`(selector)

    Query this object and all of its references for objects that match the given selector.

    Parameters: | selector (JSON-like) –
    Returns: | seq[Model]

  `select_one`(selector)

    Query this object and all of its references for objects that match the given selector. Raises an error if more than one object is found. Returns single matching object, or None if nothing is found :param selector: :type selector: JSON-like

    Returns: | Model

  `set_from_json`(name, json, models=None, setter=None)

    Set a property value on this object from JSON.

    Parameters:

    - name – (str) : name of the attribute to set
    - json – (JSON-value) : value to set to the attribute to
    - models (dict or None, optional) –

      Mapping of model ids to models (default: None)

      This is needed in cases where the attributes to update also have values that have references.

    - setter (ClientSession or ServerSession or None, optional) –

      This is used to prevent “boomerang” updates to Bokeh apps.

      In the context of a Bokeh server application, incoming updates to properties will be annotated with the session that is doing the updating. This value is propagated through any subsequent change notifications that the update triggers. The session can compare the event setter to itself, and suppress any updates that originate from itself.

    Returns: | None

  `set_select`(selector, updates)

    Update objects that match a given selector with the specified attribute/value updates.

    Parameters:

    - selector (JSON-like) –
    - updates (dict) –

    Returns: | None

  `themed_values`()

    Get any theme-provided overrides.

    Results are returned as a dict from property name to value, or `None` if no theme overrides any values for this instance.

    Returns: | dict or None

  `to_json`(include_defaults)

    Returns a dictionary of the attributes of this object, containing only “JSON types” (string, number, boolean, none, dict, list).

    References to other objects are serialized as “refs” (just the object ID and type info), so the deserializer will need to separately have the full attributes of those other objects.

    There’s no corresponding from_json() because to deserialize an object is normally done in the context of a Document (since the Document can resolve references).

    For most purposes it’s best to serialize and deserialize entire documents.

    Parameters: | include_defaults (bool) – whether to include attributes that haven’t been changed from the default

  `to_json_string`(include_defaults)

    Returns a JSON string encoding the attributes of this object.

    References to other objects are serialized as references (just the object ID and type info), so the deserializer will need to separately have the full attributes of those other objects.

    There’s no corresponding from_json_string() because to deserialize an object is normally done in the context of a Document (since the Document can resolve references).

    For most purposes it’s best to serialize and deserialize entire documents.

    Parameters: | include_defaults (bool) – whether to include attributes that haven’t been changed from the default

  `trigger`(attr, old, new, hint=None, setter=None)
  `unapply_theme`()

    Remove any themed values and restore defaults.

    Returns: | None

  `update`(**kwargs)

    Updates the object’s properties from the given keyword arguments.

    Returns: | None

    Examples

    The following are equivalent:

        from bokeh.models import Range1d

        r = Range1d

        # set properties individually:
        r.start = 10
        r.end = 20

        # update properties together:
        r.update(start=10, end=20)

  `update_from_json`(json_attributes, models=None, setter=None)

    Updates the object’s properties from a JSON attributes dictionary.

    Parameters:

    - json_attributes – (JSON-dict) : attributes and values to update
    - models (dict or None, optional) –

      Mapping of model ids to models (default: None)

      This is needed in cases where the attributes to update also have values that have references.

    - setter (ClientSession or ServerSession or None, optional) –

      This is used to prevent “boomerang” updates to Bokeh apps.

      In the context of a Bokeh server application, incoming updates to properties will be annotated with the session that is doing the updating. This value is propagated through any subsequent change notifications that the update triggers. The session can compare the event setter to itself, and suppress any updates that originate from itself.

    Returns: | None

  `document`

    The |Document| this model is attached to (can be `None`)

  `ref`

    A Bokeh protocol “reference” to this model, i.e. a dict of the form:

        {
            'type' : << view model name >>
            'id'   : << unique model id >>
        }

    Additionally there may be a subtype field if this model is a subtype.