Model Pane

RASON Desktop User Guide

Model Summary

The top of the pane summarizes the model as it is currently defined. Each row reflects a section of the RASON model and updates automatically as the model is edited.

Optimization Simulation Data Science Calculation Any model type

RASON Desktop Model pane showing the model summary — Figure 1. The Model pane summary.

Node	Applies to	Description
Model Name	Any	The root node shows the model name and the model type (optimization, simulation, calculation, or datamining).
Objective	Opt	Displays the objective formula and its sense for an optimization model.
Variables	Opt	The number of decision variables defined in the optimization model.
Constraints	Opt	The number of constraints defined in the optimization model.
Uncertain Variables	Sim	The number of uncertain variables defined in the simulation model.
Uncertain Functions	Sim	The number of uncertain functions defined in the simulation model.
Data entries	Any	The number of data objects or arrays defined in the data section of any model type.
Formulas	Any	The number of intermediate formulas defined in the formulas section of any model type.

Export Model and Diagnose Model Buttons

Two buttons in the RASON Desktop interface act on the currently open model: Export Model sends the model to Power BI or Excel, and Diagnose Model runs the diagnosis that populates the Diagnosis Results branch described below.

Export Model — Exports the open RASON model so it can be run outside Visual Studio Code. Click Export Model, then choose Export to Power BI or Export to Excel at the top of the screen. After the export succeeds, a confirmation message appears in Visual Studio Code, and the model can be executed directly within the chosen application, letting you run it and explore scenarios without returning to the editor.
Diagnose Model — Runs a diagnosis of the open model, classifying it and reporting the characteristics that determine which Solver engine can be used. The results appear under the Diagnosis Results branch of the Model pane.

Note: Exporting to Power BI or Excel requires RASON Runner to be installed, which adds Solve under External Tools in Power BI and the RASON tab in Excel.

Diagnosis Results

The Diagnosis Results branch appears after a model diagnosis is performed on an optimization or simulation model (only). Diagnosis classifies the model and reports the characteristics that determine which Solver engine can be used.

Applies to: Optimization Simulation

RASON Desktop Diagnosis Results branch of the Model pane — Figure 3. The Diagnosis Results branch.

Node	Applies to	Description
Type	Opt Sim	The problem class identified by the diagnosis.
Model Type	Opt	The diagnosed structure of an optimization model. This field does not appear for simulation models. `LP Convex` indicates a linear, convex program, which can be solved by the fast and reliable linear programming engine. Other classifications for optimization models include LP/MIP, QP, NLP, and Non-Convex.
Variables	Opt	The total count of decision variables in the optimization model seen by the diagnosis.
Linear Vars	Opt	The number of variables that appear in the optimization model, only in linear terms.
Smooth Vars	Opt	The number of variables that appear in smooth (continuous, differentiable) nonlinear functions, in the optimization model.
Integers	Opt	The number of variables constrained to integer values in the optimization model.
All Functions	Opt	The total number of functions in the optimization model, counting the objective and all constraints.
Linear Functions	Opt	The number of those functions that are linear. When this equals All Functions, the model is fully linear. (Optimization models only.)
Sparsity	Opt	The percentage of zero coefficients in the model’s coefficient matrix. Higher sparsity generally allows faster solves. (Optimization models only.)
Uncertain Variables	Sim	The number of uncertain variables appearing in the simulation model.
Uncertain Functions	Sim	The number of uncertain functions appearing in the simulation model.
Warnings (n)	Opt Sim	An expandable branch listing any warnings raised during diagnosis. The number in parentheses is the warning count.

Note: The Diagnosis Results and Warnings branches are only shown after a diagnosis has been run. Before diagnosis, the pane displays the model summary only.