vstack¶
-
astropy.table.
vstack
(tables, join_type='outer', metadata_conflicts='warn')[source] [edit on github]¶ Stack tables vertically (along rows)
A
join_type
of ‘exact’ means that the tables must all have exactly the same column names (though the order can vary). Ifjoin_type
is ‘inner’ then the intersection of common columns will be the output. A value of ‘outer’ (default) means the output will have the union of all columns, with table values being masked where no common values are available.Parameters: - tables : Table or list of Table objects
Table(s) to stack along rows (vertically) with the current table
- join_type : str
Join type (‘inner’ | ‘exact’ | ‘outer’), default is ‘outer’
- metadata_conflicts : str
- How to proceed with metadata conflicts. This should be one of:
'silent'
: silently pick the last conflicting meta-data value'warn'
: pick the last conflicting meta-data value, but emit a warning (default)'error'
: raise an exception.
Returns: - stacked_table :
Table
object New table containing the stacked data from the input tables.
Examples
To stack two tables along rows do:
>>> from astropy.table import vstack, Table >>> t1 = Table({'a': [1, 2], 'b': [3, 4]}, names=('a', 'b')) >>> t2 = Table({'a': [5, 6], 'b': [7, 8]}, names=('a', 'b')) >>> print(t1) a b --- --- 1 3 2 4 >>> print(t2) a b --- --- 5 7 6 8 >>> print(vstack([t1, t2])) a b --- --- 1 3 2 4 5 7 6 8