Generates a hierarchy with GraphViz for any parent-child relationship hidden in a CSV tabular data file, with column names as header row. Also generates a HTML file with an animated D3 collapsible tree, for the parent-child relationship.

Run the following from the command line, to show the simple employee-manager dependency hierarchy, with employee ID as default object identifiers. Remark that the "from" column must be the unique identifier for each row. These are all the requiered command line arguments:

python viewer.py --f data/employees --from employee_id --to manager_id

IDs are unique, but not very friendly. If you have a column that can be used to easily identify an object, you can mention it. Here we have the same hierarchy, but we indetify the employees by their names:

python viewer.py --f data/employees --from employee_id --to manager_id --d employee_name

The --rev switch will change the direction of each arrow from parent to child (by default it is from child to parent). Here is the manager-employee hierarchy:

python viewer.py --f data/employees --from employee_id --to manager_id --d employee_name --rev

Each run will also create and show a HTML file with a D3 SVG graph as an animated collapsible tree, always for the same parent-child hierarchy (collapsed node appear with dark circles):

Same as before, except we added the department ID to group all employees from each department in a surrounding "box":

python viewer.py --f data/employees --from employee_id --to manager_id --d employee_name --g department_id

In a similar manner we may group employees by job title:

python viewer.py --f data/employees --from employee_id --to manager_id --d employee_name --g job_id

Instead of grouping, we may also pass a "value" column, like SALARY, in which case each shape becomes a "bubble" resized based on these values, with the actual value as tooltip:

python viewer.py --f data/employees --from employee_id --to manager_id --d employee_name --v salary

The --all flag will "expand" all other properties (except the display name) from the CSV file for each object. If you get an error that the URL is too long for the browser, copy and paste the generated DOT file content into the online GraphViz editor (but be aware that this may generate indeed a lot of data!).

python viewer.py --f data/employees --from employee_id --to manager_id --d employee_name --all

Here is a partial view of the generated graph:

The data/employees.csv test data file has been adapted from here: