The graph interface API

The core class of this toolbox is the GraphInterface. It wraps around the The graph class data structure and provides functionality for its creation, parsing and editing.

Provided methods

The main functionality of this class is:

Model creation

• readModel(model)

Graph search

• getEquations(ids)
• getVariables(ids)
• getVariablesKnown(id)
• getVariablesUnknown(id)
• getVarIdByAlias(alias)
• getEdges(ids)
• getEdgeWeight(ids)
• getEdgeIdByVertices(equIds,varIds)
• getAliasById(ids)
• getMatchedEqus()
• getMatchedVars()
• getMathedEdges()

Logical tests

• isEquation(ids)
• isVariable(ids)
• isEdge(ids)
• isMatched(ids)
• isKnown(ids)
• isIntegral(ids)
• isDerivative(ids)
• isNonSolvable(ids)

Graph element editing

• setEdgeWeight(ids, weights)
• setMathed(ids)
• setKnown(ids)

Graph manipulation

• applyMatching(M)

Adjacency matrices

Traditionally, structural methods used adjacency matrices for model representation. GraphInterface creates such a matrix based on its graph with createAdjacency() and adds it to its members, as an Adjacency class.

This class provides the bidirectional (BD), equation-to-variable (E2V) and variable-to-equations (V2E) matrices as its members, with weighted entries.