How to visualize dask graphs?

Question

I am following the official docs, however, getting the error during import.

F:\>python
Python 2.7.11 |Anaconda custom (64-bit)| (default, Feb 16 2016, 09:58:36)[MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
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>>> from dask.dot import dot_graph

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Anaconda\lib\site-packages\dask\dot.py", line 11, in <module>
    graphviz = import_required("graphviz", "Drawing dask graphs requires the "
  File "C:\Anaconda\lib\site-packages\dask\utils.py", line 70, in import_required
raise RuntimeError(error_msg)
RuntimeError: Drawing dask graphs requires the `graphviz` python library and the `graphviz` system library to be installed.
>>>

I am running Anaconda and have installed graphviz.

C:\>conda install graphviz
Using Anaconda API: https://api.anaconda.org
Fetching package metadata .........
Solving package specifications: ..........

# All requested packages already installed.
# packages in environment at C:\Anaconda:
#
graphviz                  2.38.0                        2

I've got a directory C:\Anaconda\Library\bin\graphviz with the bunch of .exe, .dll and other files inside. There is also something in PATH variable:

F:\>where dot
C:\Anaconda\Library\bin\dot.bat

Here is the content of that file (C:\Anaconda\Library\bin\dot.bat):

@echo off 
%~dp0.\graphviz\dot.exe %*

I have dask 0.11.0 installed:

F:\>conda list dask
# packages in environment at C:\Anaconda:
#
Using Anaconda API: https://api.anaconda.org
dask                      0.11.0                   py27_0

These errors appear both in Windows and in Linux (Ubuntu 16.04 with all recent updates).

What else does it require?

"Could not find files for the given pattern(s)". But this command is not supposed to find anything, AFAIK, since GraphViz is the name of the project. Main executable from this package is dot. — wl2776, Sep 02 '16 at 09:28

Ohad Eytan · Accepted Answer · 2016-09-02T09:51:32.587

2

I'm not using Anaconda, but generaly if you wish to use graphviz you should:

Install the graphviz python module (probably with pip install graphviz).
Download and install the graphviz software.

edited Sep 02 '16 at 09:51

answered Sep 02 '16 at 09:31

Ohad Eytan

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I know. It was installed in C:\Anaconda\Library\bin\graphviz – wl2776 Sep 02 '16 at 09:35
Are you sure that is the software and not the module? – Ohad Eytan Sep 02 '16 at 09:37
Yes, I am. I've got another installation of previous version of the GraphViz. Directory contents are pretty similar. – wl2776 Sep 02 '16 at 09:40
ImportError: No module named graphviz – wl2776 Sep 02 '16 at 09:46
So perhaps it's the opposite problem, you didn't install the `graphviz` module. Try `pip install graphviz`. – Ohad Eytan Sep 02 '16 at 09:48
The conda graphviz package is pretty broken. Installing graphviz traditionally as suggested here is generally a better bet. – MRocklin Sep 02 '16 at 11:52

score 1 · Answer 2 · answered Feb 02 '18 at 19:27

1

To use the visualizing part of dask in anaconda, install both the graphviz and python-graphviz packages. Dask depends on a python interface to graphviz to do visualizations.

$ conda install graphviz python-graphviz

answered Feb 02 '18 at 19:27

microe14

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yes, as explained in https://github.com/ContinuumIO/anaconda-issues/issues/485#issuecomment-279296254 this step is necessary – K.S. Oct 18 '19 at 17:46

How to visualize dask graphs?

2 Answers2