Source code for pm4py.visualization.common.gview

'''
    This file is part of PM4Py (More Info: https://pm4py.fit.fraunhofer.de).

    PM4Py 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.

    PM4Py 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 PM4Py.  If not, see <https://www.gnu.org/licenses/>.
'''
import tempfile

from pm4py.util import vis_utils, constants
from io import BytesIO
from graphviz import Digraph


[docs]def view(gviz): """ View the diagram Parameters ----------- gviz GraphViz diagram """ if vis_utils.check_visualization_inside_jupyter(): vis_utils.view_image_in_jupyter(gviz.render()) else: return gviz.view(cleanup=True)
[docs]def matplotlib_view(gviz): """ Views the diagram using Matplotlib Parameters --------------- gviz Graphviz """ from pm4py.visualization.common import save import matplotlib.pyplot as plt import matplotlib.image as mpimg file_name = tempfile.NamedTemporaryFile(suffix='.png') file_name.close() save.save(gviz, file_name.name) img = mpimg.imread(file_name.name) plt.imshow(img) plt.show()
[docs]def serialize_dot(gviz: Digraph) -> bytes: """ Serialize the DOT instructions of a Graphviz object Parameters -------------- gviz Graphviz object Returns -------------- bytes_string String containing the DOT instructions """ dot = str(gviz) f = BytesIO() f.write(dot.encode(constants.DEFAULT_ENCODING)) return f.getvalue()
[docs]def serialize(gviz: Digraph) -> bytes: """ Serialize the image rendered from a Graphviz object Parameters --------------- gviz Graphviz object Returns --------------- bytes_string String containing the picture """ render = gviz.render(cleanup=True) with open(render, "rb") as f1: return f1.read()