Kedro-Viz displays data and machine-learning pipelines in an informative way, emphasising the connections between datasets and nodes. It shows the structure of your Kedro pipeline.
This exercise assumes that you have been following the Spaceflights tutorial.
You can install Kedro-Viz by running:
pip install kedro-viz
Visualise a whole pipeline¶
You should be in your project root directory, and once Kedro-Viz is installed you can visualise your pipeline by running:
This command will run a server on http://127.0.0.1:4141 that will open up your visualisation on a browser. You should be able to see the following:
Exit an open visualisation¶
You exit this visualisation by closing the open browser and entering Ctrl+C or Cmd+C in your terminal.
Interact with Data Engineering Convention¶
The pipeline can be broken up into different layers to specify convention for how data is processed. This convention makes it easier to collaborate with other team members because everyone has an idea of what type of data cleaning or processing has happened. It also makes it easier to collaborate with yourself in future because it makes your data easier to reproduce if you have done something wrong. You can read more about the Data Engineering Convention that we use.
Kedro-Viz makes it easy to visualise these data processing stages by adding a
layer attribute to the datasets in the Data Catalog. We will be modifying
catalog.yml with the following:
companies: type: pandas.CSVDataSet filepath: data/01_raw/companies.csv layer: raw reviews: type: pandas.CSVDataSet filepath: data/01_raw/reviews.csv layer: raw shuttles: type: kedro_tutorial.io.xls_local.ExcelLocalDataSet filepath: data/01_raw/shuttles.xlsx layer: raw preprocessed_companies: type: pandas.CSVDataSet filepath: data/02_intermediate/preprocessed_companies.csv layer: intermediate preprocessed_shuttles: type: pandas.CSVDataSet filepath: data/02_intermediate/preprocessed_shuttles.csv layer: intermediate master_table: type: pandas.CSVDataSet filepath: data/03_primary/master_table.csv layer: primary regressor: type: pickle.PickleDataSet filepath: data/06_models/regressor.pickle versioned: true layer: models
Run kedro-viz again with
kedro viz and observe how your visualisation has changed to accommodate the data processing stages as seen in the image below: