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Data exploration

meta_varnames()
Summarize object metadata
unique_values()
Summarize values in a metadata variable

Data access

fetch_data()
Fetch feature expression data, reduction coordinates, or metadata from single-cell objects
fetch_metadata()
Fetch metadata from single-cell objects
fetch_reduction()
Fetch reduction coordinates from single-cell objects

Utility functions

reduction_dimnames()
From names of reduction keys for fetch_data
fetch_cells()
Return cell IDs for a subset based on metadata
all_keys()
Get keys for all assays/reductions in an object
features_in_assay()
Get names of all features in an assay/experiment/modality
default_layer()
Return the default layer
default_reduction()
Get default reduction from object
get_all_cells()
Plotting utility function to return all cell IDs
n_unique()
Number of unique values in a metadata variable

Datasets

AML_Seurat
Reference dataset used for testing and demonstration (Seurat)
AML_SCE()
Reference dataset used for testing and demonstration (SingleCellExperiment)
AML_h5ad()
Reference dataset used for testing and demonstration (anndata)