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#!/usr/bin/env python3
# Copyright (C) 2005-2007 Carabos Coop. V. All rights reserved
# Copyright (C) 2008-2024 Vicent Mas. All rights reserved
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Author: Vicent Mas - vmas@vitables.org
"""
This is meant to exercise ViTables capability to zoom into
multidimensional cells.
It also works to check views of multidimensional attributes.
"""
import numpy as np
import tables
class Particle(tables.IsDescription):
"""Description of a table record."""
name = tables.StringCol(16, pos=1)
lati = tables.IntCol(pos=2)
vector = tables.Int32Col(shape=(200,), pos=3)
matrix1 = tables.Int32Col(shape=(2, 200), pos=4)
matrix2 = tables.FloatCol(shape=(100, 2), pos=5)
matrix3 = tables.FloatCol(shape=(10, 100, 2), pos=5)
matrix4 = tables.FloatCol(shape=(2, 10, 100, 2), pos=5)
# Open a file in "w"rite mode
fileh = tables.open_file("MDobjects.h5", mode = "w")
# Create the table with compression 'on' in order to reduce size as
# much as possible
table = fileh.create_table(fileh.root, 'table', Particle, "A table",
filters=tables.Filters(complevel=1))
# Append several rows with default values
for i in range(10):
table.row.append()
table.flush()
# create new arrays
atom1 = tables.IntAtom()
shape1 = (2, 10, 10, 1)
filters1 = tables.Filters(complevel=1)
#(2, 10, 10, 3)
array1 = fileh.create_carray(fileh.root, 'array1', atom1, shape1,
filters=filters1)
atom2 = tables.FloatAtom()
shape2 = (2, 10, 10, 3, 1)
filters2 = tables.Filters(complevel=1)
#(2, 10, 10, 3, 200)
array2 = fileh.create_carray(fileh.root, 'array2', atom2, shape2,
filters=filters2)
# Add multimensional attributes to the objects
# Integers will go in /table
table.attrs.MD1 = np.arange(5, dtype="int8")
table.attrs.MD2 = np.arange(10, dtype="int64").reshape(2, 5)
# Complex will go in /array1
array1.attrs.MD1 = np.arange(5, dtype="complex128")
array1.attrs.MD2 = np.arange(10, dtype="complex128").reshape(2, 5)
# Strings will go in /array2
array2.attrs.MD1 = np.array(['Hi', 'world!'], dtype='|S6')
array2.attrs.MD2 = np.array([['Hi', 'world!'],
['Hola', 'mon!']], dtype='|S4')
fileh.close()
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