convert taskwarrior export to graphviz format and analyse projects
The code is now on https://pypi.org and can be installed via
python3 -m pip install task2dot
if you prefer to work with installed software, compared to interpreted source code. Otherwise execution is performed via python3 task2dot/task2dot.py.
At the command line write
task export | task2dot | dot -Tsvg > test.svg
With this, all todo items that you have ever created are fed into
task2dot. Without any arguments, it just translates the export
into a format that is suitable for
graphviz whose output is saved
in the file
test.svg. We can expect this to result in an insanely
messy network graphics.
For clarity, I will not show the dot command and the output redirection into a file in any the following code snipptes. Note that those have to be added for obtaining useful commands.
When exporting data from
taskwarrior one has to explicitely state
that one only wants to export pending tasks:
task status:pendung export | task2dot
See a working example:
what are the nodes, what are the edges
Every task in the taskwarrior export is a node in the dot graph. The text in the task's nodes are its descriptions and all of its annotations, except for the information of items being started or stopped. Also projects and tags are nodes. The projects and the tasks are connected and the tasks are connected with its tags. The dependencies between tasks are shown as well.
User defined attributes are supported as well. If the task
configuration file is
~/.taskrc or can be found in the environment
$TASKRC then all user defined attributes are shown as
nodes that are connected to its respective tasks. This usually is
overkill, which is why there are two mechanisms to exclude nodes
and connections from the graph.
node and edge exclusion
To exclude a specific node write
task status:pending export | task2dot -node
Then there will be no node with the content 'node' in the output graph.
So why is this useful? If you try to implement Kanban or something
similar you are very likely to have a certain tag or a user
defined attribute, like
todo far too often for having it in a
graph visualization. Almost all tasks would be connected to it via
edges, which is useless. Also, if you export taskwarrior data,
which is filtered with a specific
tag will cause the resulting
graph having a lot of connections to that tag. So the following
visualization would be useful:
task status:pending +work | task2dot -work
node type and edge exclusion
A specific type of node can be excluded by using two hyphens. For example, not showing any project nodes looks like this:
task status:pendung export | task2dot --project
Or not showing any tags:
task status:pendung export | task2dot --tags
In my workflow, paths and emails ids are attached to tasks, so I need to write
task export | task2dot --path --email
It is also possible to exclude certain connections also by using double hyphen. Let's get rid of all connections from tasks to tags:
task export | task2dot --task-tags
more connections: overnext neighbors
It is possible to add additional edges than what taskwarrior exports directly. One could for example add edges between projects and tags because they are connected by tasks that have both. If one then removes the tasks one can look at a graph that shows us which 'actions' are needed for certain projects, if the tags represent 'actions'. Similarly to edge exclusion, we use ++node1-node2 to add additional edges.
task export | task2dot ++tags-project --task
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