tablecloth.time.utils.indexing
can-identify-index-column?clj
(can-identify-index-column? dataset)Returns true or false, can the time index column be identified
automatically?
Returns `true` or `false`, can the time index column be identified automatically?
index-byclj
(index-by dataset index-column-name)Identifies the column that should be used as the index for the dataset. Useful when functions that use the index to perform their operations, cannot auto-detect the index column. This can happen if there are more than one time-based column; or, if it is not clear that any column contains time data.
Identifies the column that should be used as the index for the dataset. Useful when functions that use the index to perform their operations, cannot auto-detect the index column. This can happen if there are more than one time-based column; or, if it is not clear that any column contains time data.
index-column-datatypeclj
(index-column-datatype dataset)Returns the datatype of the index column data, if it is known.
Returns the datatype of the index column data, if it is known.
index-column-nameclj
(index-column-name dataset)Returns the name of the index column or nil. If the :index meta
is set on the column metadata, that is the name of the index;
otherwise, if there is a single column that can be identifed as time
data, that will be the column name.
Returns the name of the index column or `nil`. If the `:index` meta is set on the column metadata, that is the name of the index; otherwise, if there is a single column that can be identifed as time data, that will be the column name.
index-column-object-classclj
(index-column-object-class dataset)Returns the object class of the index column data, if the index column is known.
Returns the object class of the index column data, if the index column is known.
time-columnsclj
(time-columns dataset)Returns a list of columns containing time data, if any.
Returns a list of columns containing time data, if any.
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