Updating a model

To add or change one or more components of an existing Wflow model the update method can be used.

Steps in brief:

1. You have an existing model schematization. This model does not have to be complete.

2. Prepare or use a pre-defined data catalog with all the required data sources, see working with data.

3. Prepare a model configuration with the methods that you want to use to add or change components of your model: see model configuration.

4. Update your model using the CLI or Python interface.

activate hydromt-wflow
hydromt update wflow path/to/model_to_update -o path/to/updated_model -i wflow_update.yml -d data_sources.yml -vvv

Note

By default, the updated model will overwrite your existing one. To save the updated model in a different folder, use the -o path/to/updated_model option of the CLI.

Tip

By default all model data is written at the end of the update method. If your update however only affects a certain model data (e.g. staticmaps or forcing) you can add a write_* method (e.g. write_staticmaps, write_forcing) to the .yml file and only these data will be written.

Note that the model config is often changed as part of the a model method and write_config should thus be added to the .yml file to keep the model data and config consistent.