SCEngine#

class astropy.table.SCEngine(data, row_index, unique=False)[source]#

Bases: object

Fast tree-based implementation for indexing, using the sortedcontainers package.

Parameters:

dataTable: Sorted columns of the original table
row_indexColumn object: Row numbers corresponding to data columns
uniquebool: Whether the values of the index must be unique. Defaults to False.

Methods Summary

`add`(key, value)	Add a key, value pair.
`find`(key)	Find rows corresponding to the given key.
`items`()	Return a list of key, data tuples.
`range`(lower, upper[, bounds])	Return row values in the given range.
`remove`(key[, data])	Remove data from the given key.
`replace_rows`(row_map)	Replace rows with the values in row_map.
`shift_left`(row)	Decrement rows larger than the given row.
`shift_right`(row)	Increment rows greater than or equal to the given row.
`sort`()	Make row order align with key order.
`sorted_data`()	Return a list of rows in order sorted by key.

Methods Documentation

add(key, value)[source]#: Add a key, value pair.

find(key)[source]#: Find rows corresponding to the given key.

items()[source]#: Return a list of key, data tuples.

range(lower, upper, bounds=(True, True))[source]#: Return row values in the given range.

remove(key, data=None)[source]#: Remove data from the given key.

replace_rows(row_map)[source]#: Replace rows with the values in row_map.

shift_left(row)[source]#: Decrement rows larger than the given row.

shift_right(row)[source]#: Increment rows greater than or equal to the given row.

sort()[source]#: Make row order align with key order.

sorted_data()[source]#: Return a list of rows in order sorted by key.