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"""
The horisontal split, or HSplit, nodes split the incoming Tables into new
Tables by columns. Compared to the :ref:`VSplit Table` nodes where the split
procedure can be regulated by a selected index column, these nodes will place
every column in the incoming Tables into separate Tables in an outgoing list.
"""
from sympathy.api import node as synode
from sympathy.api.nodeconfig import Port, Ports, Tag, Tags
[docs]class HSplitTableNode(synode.Node):
"""
Horisontal split of a Table. The output is a list of Tables, where the
columns in the incoming Table are placed in separate Tables in the output.
:Opposite node: :ref:`HJoin Tables`
:Ref. nodes: :ref:`HSplit Tables`
"""
author = "Greger Cronquist"
version = '1.0'
icon = 'hsplit_table.svg'
name = 'HSplit Table'
description = ('Split a Table into multiple Tables by columns, '
'every column becomes a new table.')
nodeid = 'org.sysess.sympathy.data.table.hsplittablenode'
tags = Tags(Tag.DataProcessing.TransformStructure)
inputs = Ports([Port.Table('Input Table', name='port1')])
outputs = Ports([Port.Tables('Joined Tables', name='port1')])
def execute(self, node_context):
tablefile = node_context.input['port1']
outfilelist = node_context.output['port1']
columns = tablefile.column_names()
number_of_columns = len(columns)
original_name = tablefile.get_name()
for col_number, column in enumerate(columns):
table_outfile = outfilelist.create()
table_outfile.update_column(column, tablefile, column)
table_outfile.set_name(u'{0}-{1}'.format(
original_name, col_number))
outfilelist.append(table_outfile)
self.set_progress(100.0 * (col_number + 1) /
number_of_columns)
[docs]class HSplitTablesNode(synode.Node):
"""
Horisontal split of Tables. The output is a list of Tables, where the
columns in the incoming Tables are placed in separate Tables in the
output.
:Ref. nodes: :ref:`HSplit Table`
"""
author = "Greger Cronquist"
version = '1.0'
icon = 'hsplit_table.svg'
name = 'HSplit Tables'
description = ('Split a list of Table into multiple Tables, '
'every column becomes a new table.')
nodeid = 'org.sysess.sympathy.data.table.hsplittablenodes'
tags = Tags(Tag.DataProcessing.TransformStructure)
inputs = Ports([Port.Tables('Input Tables', name='port1')])
outputs = Ports([Port.Tables('Joined Tables', name='port1')])
def execute(self, node_context):
infilelist = node_context.input['port1']
outfilelist = node_context.output['port1']
for intable in infilelist:
original_name = intable.get_name()
for col_number, column in enumerate(intable.column_names()):
output = outfilelist.create()
output.update_column(column, intable, column)
output.set_name(u'{0}-{1}'.format(original_name, col_number))
outfilelist.append(output)
