PathFromNode#

class PathFromNode#

Bases: object

Methods:

`after`(start)	Create a view of the PathFromNode including all events after start (exclusive).
`at`(time)	Create a view of the PathFromNode including all events at time.
`before`(end)	Create a view of the PathFromNode including all events before end (exclusive).
`collect`()	Collect all nodes into a list
`default_layer`()	Return a view of PathFromNode containing only the default edge layer :returns: The layered view :rtype: PathFromNode
`degree`()	the node degrees
`exclude_layer`(name)	Return a view of PathFromNode containing all layers except the excluded name Errors if any of the layers do not exist.
`exclude_layers`(names)	Return a view of PathFromNode containing all layers except the excluded names Errors if any of the layers do not exist.
`exclude_valid_layer`(name)	Return a view of PathFromNode containing all layers except the excluded name :param name: layer name that is excluded for the new view :type name: str
`exclude_valid_layers`(names)	Return a view of PathFromNode containing all layers except the excluded names :param names: list of layer names that are excluded for the new view :type names: list[str]
`expanding`(step)	Creates a WindowSet with the given step size using an expanding window.
`filter_edges`(filter)	Return a filtered view that only includes edges that satisfy the filter
`filter_exploded_edges`(filter)	Return a filtered view that only includes exploded edges that satisfy the filter
`filter_nodes`(filter)	Return a filtered view that only includes nodes that satisfy the filter
`has_layer`(name)	Check if PathFromNode has the layer "name"
`in_degree`()	the node in-degrees
`latest`()	Create a view of the PathFromNode including all events at the latest time.
`layer`(name)	Return a view of PathFromNode containing the layer "name" Errors if the layer does not exist
`layers`(names)	Return a view of PathFromNode containing all layers names Errors if any of the layers do not exist.
`out_degree`()	the node out-degrees
`rolling`(window[, step])	Creates a WindowSet with the given window size and optional step using a rolling window.
`shrink_end`(end)	Set the end of the window to the smaller of end and self.end()
`shrink_start`(start)	Set the start of the window to the larger of start and self.start()
`shrink_window`(start, end)	Shrink both the start and end of the window (same as calling shrink_start followed by shrink_end but more efficient)
`snapshot_at`(time)	Create a view of the PathFromNode including all events that have not been explicitly deleted at time.
`snapshot_latest`()	Create a view of the PathFromNode including all events that have not been explicitly deleted at the latest time.
`type_filter`(node_types)	filter nodes by type
`valid_layers`(names)	Return a view of PathFromNode containing all layers names Any layers that do not exist are ignored
`window`(start, end)	Create a view of the PathFromNode including all events between start (inclusive) and end (exclusive)

Attributes:

`earliest_time`	the node earliest times
`edges`	Get the edges that are incident to this node.
`end`	Gets the latest time that this PathFromNode is valid.
`end_date_time`	Gets the latest datetime that this PathFromNode is valid
`id`	the node ids
`in_edges`	Get the edges that point into this node.
`in_neighbours`	Get the neighbours of this node that point into this node.
`latest_time`	the node latest times
`name`	the node names
`neighbours`	Get the neighbours of this node.
`node_type`	the node types
`out_edges`	Get the edges that point out of this node.
`out_neighbours`	Get the neighbours of this node that point out of this node.
`properties`	the node properties
`start`	Gets the start time for rolling and expanding windows for this PathFromNode
`start_date_time`	Gets the earliest datetime that this PathFromNode is valid
`window_size`	Get the window size (difference between start and end) for this PathFromNode

after(start)#

Create a view of the PathFromNode including all events after start (exclusive).

Parameters:: start (TimeInput) – The start time of the window.
Return type:: PathFromNode

at(time)#

Create a view of the PathFromNode including all events at time.

Parameters:: time (TimeInput) – The time of the window.
Return type:: PathFromNode

before(end)#

Create a view of the PathFromNode including all events before end (exclusive).

Parameters:: end (TimeInput) – The end time of the window.
Return type:: PathFromNode

collect()#

Collect all nodes into a list

Returns:: the list of nodes
Return type:: list[Node]

default_layer()#: Return a view of PathFromNode containing only the default edge layer :returns: The layered view :rtype: PathFromNode

degree()#: the node degrees

earliest_time#: the node earliest times

edges#

Get the edges that are incident to this node.

Returns:: The incident edges.
Return type:: Edges

end#

Gets the latest time that this PathFromNode is valid.

Returns:: The latest time that this PathFromNode is valid or None if the PathFromNode is valid for all times.
Return type:: Optional[int]

end_date_time#

Gets the latest datetime that this PathFromNode is valid

Returns:: The latest datetime that this PathFromNode is valid or None if the PathFromNode is valid for all times.
Return type:: Optional[datetime]

exclude_layer(name)#

Return a view of PathFromNode containing all layers except the excluded name Errors if any of the layers do not exist.

Parameters:: name (str) – layer name that is excluded for the new view
Returns:: The layered view
Return type:: PathFromNode

exclude_layers(names)#

Return a view of PathFromNode containing all layers except the excluded names Errors if any of the layers do not exist.

Parameters:: names (list[str]) – list of layer names that are excluded for the new view
Returns:: The layered view
Return type:: PathFromNode

exclude_valid_layer(name)#

Return a view of PathFromNode containing all layers except the excluded name :param name: layer name that is excluded for the new view :type name: str

Returns:: The layered view
Return type:: PathFromNode

exclude_valid_layers(names)#

Return a view of PathFromNode containing all layers except the excluded names :param names: list of layer names that are excluded for the new view :type names: list[str]

Returns:: The layered view
Return type:: PathFromNode

expanding(step)#

Creates a WindowSet with the given step size using an expanding window.

An expanding window is a window that grows by step size at each iteration.

Parameters:: step (int | str) – The step size of the window.
Returns:: A WindowSet object.
Return type:: WindowSet

filter_edges(filter)#

Return a filtered view that only includes edges that satisfy the filter

Parameters:: filter (PropertyFilter) – The filter to apply to the edge properties. Construct a filter using Prop.
Returns:: The filtered view
Return type:: PathFromNode

filter_exploded_edges(filter)#

Return a filtered view that only includes exploded edges that satisfy the filter

Parameters:: filter (PropertyFilter) – The filter to apply to the exploded edge properties. Construct a filter using Prop.
Returns:: The filtered view
Return type:: PathFromNode

filter_nodes(filter)#

Return a filtered view that only includes nodes that satisfy the filter

Parameters:: filter (PropertyFilter) – The filter to apply to the node properties. Construct a filter using Prop.
Returns:: The filtered view
Return type:: PathFromNode

has_layer(name)#

Check if PathFromNode has the layer “name”

Parameters:: name (str) – the name of the layer to check
Return type:: bool

id#: the node ids

in_degree()#: the node in-degrees

in_edges#

Get the edges that point into this node.

Returns:: The inbound edges.
Return type:: Edges

in_neighbours#

Get the neighbours of this node that point into this node.

Returns:: The in-neighbours.
Return type:: PathFromNode

latest()#

Create a view of the PathFromNode including all events at the latest time.

Return type:: PathFromNode

latest_time#: the node latest times

layer(name)#

Return a view of PathFromNode containing the layer “name” Errors if the layer does not exist

Parameters:: name (str) – then name of the layer.
Returns:: The layered view
Return type:: PathFromNode

layers(names)#

Return a view of PathFromNode containing all layers names Errors if any of the layers do not exist.

Parameters:: names (list[str]) – list of layer names for the new view
Returns:: The layered view
Return type:: PathFromNode

name#: the node names

neighbours#

Get the neighbours of this node.

Returns:: The neighbours (both inbound and outbound).
Return type:: PathFromNode

node_type#: the node types

out_degree()#: the node out-degrees

out_edges#

Get the edges that point out of this node.

Returns:: The outbound edges.
Return type:: Edges

out_neighbours#

Get the neighbours of this node that point out of this node.

Returns:: The out-neighbours.
Return type:: PathFromNode

properties#: the node properties

rolling(window, step=None)#

Creates a WindowSet with the given window size and optional step using a rolling window.

A rolling window is a window that moves forward by step size at each iteration.

Parameters:

window (int | str) – The size of the window.
step (int | str | None) – The step size of the window. step defaults to window.

Returns:

A WindowSet object.

Return type:

WindowSet

shrink_end(end)#

Set the end of the window to the smaller of end and self.end()

Parameters:: end (TimeInput) – the new end time of the window
Return type:: PathFromNode

shrink_start(start)#

Set the start of the window to the larger of start and self.start()

Parameters:: start (TimeInput) – the new start time of the window
Return type:: PathFromNode

shrink_window(start, end)#

Shrink both the start and end of the window (same as calling shrink_start followed by shrink_end but more efficient)

Parameters:

start (TimeInput) – the new start time for the window
end (TimeInput) – the new end time for the window

Return type:

PathFromNode

snapshot_at(time)#

Create a view of the PathFromNode including all events that have not been explicitly deleted at time.

This is equivalent to before(time + 1) for Graph and at(time) for PersistentGraph

Parameters:: time (TimeInput) – The time of the window.
Return type:: PathFromNode

snapshot_latest()#

Create a view of the PathFromNode including all events that have not been explicitly deleted at the latest time.

This is equivalent to a no-op for Graph and latest() for PersistentGraph

Return type:: PathFromNode

start#

Gets the start time for rolling and expanding windows for this PathFromNode

Returns:: The earliest time that this PathFromNode is valid or None if the PathFromNode is valid for all times.
Return type:: Optional[int]

start_date_time#

Gets the earliest datetime that this PathFromNode is valid

Returns:: The earliest datetime that this PathFromNode is valid or None if the PathFromNode is valid for all times.
Return type:: Optional[datetime]

type_filter(node_types)#

filter nodes by type

Parameters:: node_types (list[str]) – the node types to keep
Returns:: the filtered view
Return type:: PathFromNode

valid_layers(names)#

Return a view of PathFromNode containing all layers names Any layers that do not exist are ignored

Parameters:: names (list[str]) – list of layer names for the new view
Returns:: The layered view
Return type:: PathFromNode

window(start, end)#

Create a view of the PathFromNode including all events between start (inclusive) and end (exclusive)

Parameters:

start (TimeInput | None) – The start time of the window (unbounded if None).
end (TimeInput | None) – The end time of the window (unbounded if None).

Return type:

PathFromNode

window_size#

Get the window size (difference between start and end) for this PathFromNode

Return type:: Optional[int]