DataCollection¶
-
class
glue.core.data_collection.
DataCollection
(data=None)[source]¶ Bases:
glue.core.hub.HubListener
The top-level object for interacting with datasets in Glue.
DataCollections have the following responsibilities:
Providing a way to retrieve and store data
Broadcasting messages when data are added or removed
Keeping each managed data set’s list of
DerivedComponent
instances up-to-dateCreating the hub that all other objects should use to communicate with one another (stored in
self.hub
)
- Parameters
data –
Data
object, or list of such objects
Attributes Summary
The
Data
objects in the collectionTuple of
ComponentLink
objects.Tuple of
ComponentLink
objects.tuple of current
Subset Groups
Methods Summary
add_link
(self, links)Add one or more links to the data collection.
append
(self, data)Add a new dataset to this collection.
extend
(self, data)Add several new datasets to this collection
index
(self, item)merge
(self, \*data, \*\*kwargs)Merge two or more datasets into a single dataset.
new_subset_group
(self[, label, subset_state])Create and return a new Subset Group.
register_to_hub
(self, hub)Register managed data objects to a hub.
remove
(self, data)Remove a data set from the collection
remove_link
(self, links)Remove one or more links from the data collection.
remove_subset_group
(self, subset_grp)Remove an existing
SubsetGroup
set_links
(self, links)Override the links in the collection, and update data objects as necessary.
suggest_merge_label
(self, \*data)Determine what merge label to suggest given datasets
Attributes Documentation
-
external_links
[source]¶ Tuple of
ComponentLink
objects.
-
links
[source]¶ Tuple of
ComponentLink
objects.
-
subset_groups
[source]¶ tuple of current
Subset Groups
Methods Documentation
-
add_link
(self, links)[source]¶ Add one or more links to the data collection.
This will auto-update the components in each data set
- Parameters
links – The links to add. A scalar or list of
ComponentLink
instances, or aLinkCollection
-
append
(self, data)[source]¶ Add a new dataset to this collection.
Appending emits a DataCollectionAddMessage. It also updates the list of DerivedComponents that each data set can work with.
- Parameters
data –
BaseCartesianData
object to add
-
extend
(self, data)[source]¶ Add several new datasets to this collection
See
append()
for more information- Parameters
data – List of data objects to add
-
merge
(self, *data, **kwargs)[source]¶ Merge two or more datasets into a single dataset.
This has the following effects:
All components from all datasets are added to the first argument All datasets except the first argument are removed from the collection Any component name conflicts are disambiguated The pixel and world components apart from the first argument are discarded
- Note
All arguments must have the same shape
- Parameters
data – One or more
Data
instances.- Returns
self
-
new_subset_group
(self, label=None, subset_state=None)[source]¶ Create and return a new Subset Group.
- Parameters
label (str) – The label to assign to the group
subset_state (
SubsetState
) – The state to initialize the group with
- Returns
A new
SubsetGroup
-
register_to_hub
(self, hub)[source]¶ Register managed data objects to a hub.
- Parameters
hub (
Hub
) – The hub to register with
-
remove
(self, data)[source]¶ Remove a data set from the collection
Emits a DataCollectionDeleteMessage
- Parameters
data (
Data
) – the object to remove
-
remove_link
(self, links)[source]¶ Remove one or more links from the data collection.
This will auto-update the components in each data set
- Parameters
links – The links to remove. A scalar or list of
ComponentLink
instances, or aLinkCollection
-
remove_subset_group
(self, subset_grp)[source]¶ Remove an existing
SubsetGroup
-
set_links
(self, links)[source]¶ Override the links in the collection, and update data objects as necessary.
- Parameters
links – The new links. An iterable of
ComponentLink
instances