Diagramming languages
A Systo "diagramming language" defines the types of nodes and arcs needed for a particular class of diagram. For example, the system_dynamics language defines 'stock', 'valve' and 'variable' nodes, and 'flow' and 'influence' arcs.
See the language gallery for an example of a model diagram for each Systo language hosted on this site.
| Name | Description | Nodes | Arcs |
|---|---|---|---|
| system_dynamics spec |
System Dynamics (stock-and-flow) diagramming. Example |
stock - an amount of some substance (e.g. water, carbon...) variable - a model parameter or intermediate ("auxilliary") variable valve - a flow rate (always attached to a flow arrow) cloud - a stock whose value is of no interest (automatically created when dragging a flow to/from the canvas) |
flow - a "pipe" between stocks and/or clouds influence - a link showing that one variable is used to calculate another |
| system_dynamics_im spec |
Approximation to the System Dynamics notation used by Insight Maker. |
stock - an amount of some substance (e.g. water, carbon...) variable - a model parameter or intermediate ("auxilliary") variable valve - a flow rate (always attached to a flow arrow) cloud - a stock whose value is of no interest (automatically created when dragging a flow to/from the canvas) |
flow - a "pipe" between stocks and/or clouds influence - a link showing that one variable is used to calculate another |
| biological_pathway spec |
A basic language for representing biological reactions. Example |
species - a chemical "species" (element or compound) involved in a reaction catalyst - a substance which influences a reaction but is not consumed by it reaction - an actual reaction stoichiometry - the stoichiometric value of a 'reactant' or 'product' link (always attached to one or other of these arcs) |
reactantthe link from a species into a reaction productthe link from a reaction into a species modifierthe link from a catalyst to a reaction |
| wcs_conceptual_modelling spec |
An informal language used by various conservation organisations (including WCS - the Wildlife Conservation Society) for mapping the threats to a target species, and the measures that can be taken to counteract these threats. Example |
goal - the overall goal of a conservation project target - the target species to be conserved direct_threat - direct threats to this species indirect_threat - indirect threats to this species intervention - intervention measures that managers can take |
link - a generalised connection between any of the above nodes |