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# Copyright 2016 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
"""Public API for the Embedding Projector.
@@ProjectorPluginAsset
@@ProjectorConfig
@@EmbeddingInfo
@@EmbeddingMetadata
@@SpriteMetadata
"""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import os
from google.protobuf import text_format
from tensorflow.python.lib.io import file_io
from tensorflow.tensorboard.plugins.projector import projector_config_pb2
# pylint: disable=wildcard-import
from tensorflow.tensorboard.plugins.projector.projector_config_pb2 import *
# pylint: enable=wildcard-import
def visualize_embeddings(summary_writer, config):
"""Stores a config file used by the embedding projector.
Args:
summary_writer: The summary writer used for writting events.
config: `tf.contrib.tensorboard.plugins.projector.ProjectorConfig`
proto that holds the configuration for the projector such as paths to
checkpoint files and metadata files for the embeddings. If
`config.model_checkpoint_path` is none, it defaults to the
`logdir` used by the summary_writer.
Raises:
ValueError: If the summary writer does not have a `logdir`.
"""
logdir = summary_writer.get_logdir()
# Sanity checks.
if logdir is None:
raise ValueError('Summary writer must have a logdir')
# Saving the config file in the logdir.
config_pbtxt = text_format.MessageToString(config)
# FYI - the 'projector_config.pbtxt' string is hardcoded in the projector
# plugin.
# TODO(dandelion): Restore this to a reference to the projector plugin
file_io.write_string_to_file(
os.path.join(logdir, 'projector_config.pbtxt'), config_pbtxt)
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