Sysdea Importer

Silico supports importing models created in Sysdea (now defunct). Almost all features in Sysdea have a counterpart in Silico, so importing give an equivalent model, with the following limitations:

• Sysdea formula-based user-functions are not supported. Sysdea table-based functions are supported, through Lookup Table elements.

• Random number seeds are not generated in the same way, and so random number generator functions will give different results in Silico for the same model.

• Text sizing may be different, leading to textboxes appearing differently.

• Element names now wrap, so name layout may be slightly different.

• Silico considers Projects of multiple models, rather than separate models, and submodels can only be created for models inside the same project. When importing models with submodels, all related models should be imported together into a single project.

• The free community tier of Silico gives one private project, and unlimited public projects.

Importer Walkthrough

The importer is available through your account page, available through the top right user menu, or alternatively you can navigate straight there using this link: https://silico.app/settings/importer

Models available are taken from a snapshot of Sysdea as of August 7th 2020. By default you will only be able to access models for the Sysdea account matching your Silico email, if one exists. If your Sysdea email differs from your Silico email, then you can contact us with appropriate information (both email addresses, proof of ownership on both sides) and we can associate the Sysdea account with your Silico account.

When available, you will get a list of the models in your Sysdea account(s). You can then select models for import using the arrow button next to each model. A greyed out arrow indicates that the model was last saved with a too-old version of Sysdea. Such models can be made compatible with import by re-saving them in Sysdea.

As mentioned earlier, Silico uses a concept of projects, and importing creates a new project each time.

• Each project uses the same time settings for all models within.

• Submodels can only be used for models within the same project.

• When importing, the time settings of the first model in the list will be used for the project. The selected models on the right can be re-ordered by clicking and dragging their name.

• When importing Sysdea models with submodels, all used models must be selected as part of the project.

• Each import will create a new project on Silico.

• It is advised to create a separate Project per logical Model on Sysdea. With the above limitations, projects are generally intended to group together submodels for a main model, rather than otherwise unrelated models.

This will create a Silico project with 2 models, using the time settings of the 'Delft Demo' model

Delays

The behaviour of delays has changed in Sysdea, so that references to before the start of the model default to 0, rather than the starting value. The is the same behaviour as Sysdea would have when providing a third argument '0' to delay.

As this can be a major breaking change to particular Sysdea models, for imported models you can re-enable the previous Sysdea behaviour under Project Settings within the application. This is intended primarily to assist in moving across, and is not otherwise available in normal Silico projects.