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--- creating_models [2019/11/18 13:34]
127.0.0.1 external edit
+++ creating_models [2023/03/03 13:58] (current)
daria [See also]
@@ Line 3: / Line 3: @@
 Ecolego was originally designed for solving systems of ordinary differential equations, but you can also create models containing only algebraich expressions.
-Models are defined by creating different objects, such as:
+{{creating_models.png?500|model}}
-  * **[[Expression|Expression]]** - Represents an algebraich expression.
+Models are defined by creating different [[block|bloks]].
-  * **[[Compartment|Compartment]]** - Represents a state variable.
-  * **[[Transfer|Transfer]]** - Represents the transfer rate, or flux, from one [[Compartment|Compartment]] to another.
+Models may be developed by using [[graph_window|Graph window]] or [[matrix_window|Matrix window]].
-  * **[[Parameter|Parameter]]** - A constant (input) value.
+Most common blocks are:
+* **[[Expression|Expression]]**  -  Allows you to write an equation, in which you refer to other building blocks.
+* **[[Parameter|Parameter]]**  - Lets the user enter a value which will remain constant during the simulation, and which can be assigned a probability distribution.
+* **[[time_series_page|Time series]]** - Is used to include time based measurements in a model, for instance precipitation rates, the past behavior of a stock or the weight of a persons life time.
+* **[[compartment|Compartment]]**- Represents a physical or imaginary quantity.Compartments are connected with [[Transfer|transfer]]** blocks.
+The typical type of model implemented in Ecolego is called a compartment model. The compartment model describes flow of species between compartments. Species is the scientific term for whatever it is we are modelling the dynamics of – materials, chemicals, money, people, goods. Fluxes between compartments are described by equations. The fluxes can be linear (proportional), non-linear or even instant.
+Ecolego allows the user to define things in the order he feels like bu using [[block|bloks]]. A list of errors in equations is presented that needs to be dealt with before a simulation can be run.
+Ecolego will help the user with unit checking, but again, this is something the user can choose to deal with when he feels it is necessary.
 ===== See also =====
-  * [[Interaction_matrix|Interaction matrix]]
-  * Model window
   * [[Blocks_window|Blocks window]]
+  * [[Matrix_window|Matrix window]]
+  * [[Graph_window|Graph window]]

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