Source code for gemseo.post.dataset.curves
# -*- coding: utf-8 -*-
# Copyright 2021 IRT Saint Exupéry, https://www.irt-saintexupery.com
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License version 3 as published by the Free Software Foundation.
#
# 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
# Contributors:
# INITIAL AUTHORS - initial API and implementation and/or initial
# documentation
# :author: Matthias De Lozzo
# OTHER AUTHORS - MACROSCOPIC CHANGES
"""
Curve plot
==========
A :class:`.Curves` plot represents samples of a functional variable
:math:`y(x)` discretized over a 1D mesh. Both evaluations of :math:`y`
and mesh are stored in a :class:`.Dataset`, :math:`y` as a parameter
and the mesh as a metadata.
"""
from __future__ import absolute_import, division, unicode_literals
import matplotlib.pyplot as plt
from future import standard_library
from gemseo.post.dataset.dataset_plot import DatasetPlot
standard_library.install_aliases()
[docs]class Curves(DatasetPlot):
""" Plot curves y_i over the mesh x. """
def _plot(self, mesh, variable, samples=None, color="blue"):
"""Curve.
:param mesh: name of the mesh stored in Dataset.metadata.
:type mesh: str
:param variable: variable name for the x-axis.
:type variable: float
:param samples: samples indices. If None, plot all samples.
Default: None.
:type samples: list(int)
:param color: line color. Default: 'blue'.
:type color: str
"""
def lines_gen():
""" Linestyle generator. """
yield "-"
i = 1
for i in range(1, self.dataset.n_samples):
yield (0, (i, 1, 1, 1))
if samples is not None:
output = self.dataset[variable][variable][samples, :].T
else:
output = self.dataset[variable][variable].T
n_samples = output.shape[1]
lines = lines_gen()
for sample in range(n_samples):
plt.plot(
self.dataset.metadata[mesh],
output[:, sample],
linestyle=next(lines),
color=color,
label=sample,
)
plt.xlabel(mesh)
plt.ylabel(variable + "(" + mesh + ")")
plt.legend()
fig = plt.gcf()
return fig