SmlmData and collections

Localization data in napari-locan is made of point-clouds with attributes.

All localization data is kept in the napari_locan.SmlmData model as locan.LocData objects.

LocData objects can also contain a collection of several localization datasets.

Localization data

Localization data consists of a list of localizations with various localization properties. The dataset is represented by a dataframe together with general properties, metadata and other attributes. In napari-locan a dataset is kept as locan.LocData object that is inserted in the napari_locan.SmlmData model and can be accessed by the attribute smlm_data.locdata.

For details on locan.LocData and data structures in locan please see the locan documentation on data structures

Collections

Collections contain the individual LocData objects together with aggregated properties that make up a new LocData object. Think of it as localization clusters where each cluster can be represented as a single “localization” with a center position and other localization attributes.

In napari-locan, widgets typically access the current selection of the SmlmData model. Some widgets deal with collections. In that case, the current selection of the SmlmData model must be a collection.