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117 lines
3.6 KiB
117 lines
3.6 KiB
# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import six
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class PlotData(object):
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def __init__(self):
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self.step = []
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self.value = []
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def append(self, step, value):
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self.step.append(step)
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self.value.append(value)
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def reset(self):
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self.step = []
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self.value = []
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class Ploter(object):
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"""
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Plot input data in a 2D graph
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Args:
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title: assign the title of input data.
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step: x_axis of the data.
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value: y_axis of the data.
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"""
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def __init__(self, *args):
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self.__args__ = args
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self.__plot_data__ = {}
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for title in args:
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self.__plot_data__[title] = PlotData()
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# demo in notebooks will use Ploter to plot figure, but when we convert
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# the ipydb to py file for testing, the import of matplotlib will make the
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# script crash. So we can use `export DISABLE_PLOT=True` to disable import
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# these libs
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self.__disable_plot__ = os.environ.get("DISABLE_PLOT")
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if not self.__plot_is_disabled__():
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import matplotlib.pyplot as plt
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from IPython import display
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self.plt = plt
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self.display = display
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def __plot_is_disabled__(self):
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return self.__disable_plot__ == "True"
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def append(self, title, step, value):
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"""
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Feed data
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Args:
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title: assign the group data to this subtitle.
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step: the x_axis of data.
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value: the y_axis of data.
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Examples:
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.. code-block:: python
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plot_curve = Ploter("Curve 1","Curve 2")
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plot_curve.append(title="Curve 1",step=1,value=1)
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"""
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assert isinstance(title, six.string_types)
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assert title in self.__plot_data__
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data = self.__plot_data__[title]
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assert isinstance(data, PlotData)
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data.append(step, value)
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def plot(self, path=None):
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"""
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Plot data in a 2D graph
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Args:
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path: store the figure to this file path. Defaul None.
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Examples:
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.. code-block:: python
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plot_curve = Ploter()
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plot_cure.plot()
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"""
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if self.__plot_is_disabled__():
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return
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titles = []
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for title in self.__args__:
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data = self.__plot_data__[title]
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assert isinstance(data, PlotData)
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if len(data.step) > 0:
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titles.append(title)
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self.plt.plot(data.step, data.value)
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self.plt.legend(titles, loc='upper left')
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if path is None:
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self.display.clear_output(wait=True)
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self.display.display(self.plt.gcf())
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else:
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self.plt.savefig(path)
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self.plt.gcf().clear()
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def reset(self):
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for key in self.__plot_data__:
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data = self.__plot_data__[key]
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assert isinstance(data, PlotData)
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data.reset()
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