The GDC allows a shorthand for specifying groups of fields to be returned by the metadata queries. These can be specified in a select
method call to easily supply groups of fields.
available_expand(entity)
# S3 method for class 'character'
available_expand(entity)
# S3 method for class 'GDCQuery'
available_expand(entity)
Arguments
Either a GDCQuery
object or a character(1) specifying a GDC entity ('cases', 'files', 'annotations', 'projects')
head(available_expand('files'))
#> [1] "analysis"
#> [2] "analysis.input_files"
#> [3] "analysis.metadata"
#> [4] "analysis.metadata.read_groups"
#> [5] "analysis.metadata.read_groups.read_group_qcs"
#> [6] "annotations"
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