MPC is an open-source Java based modeling utility, built upon JSim's Mathematical Modeling Language (MML), JSim website, that uses directives embedded in model code to construct larger, more complicated models quickly and with less error than manually combining models.

Getting Started:

• Article giving a short overview of MPC.
• Get the MPC utility and simple examples, as described in F1000Research article, on GitHub.
• Explore the MPC created model from the F1000Research article.

• MPC requires JSim be installed on your system to use models generated by it.

Modular Program Constructor (MPC): in-depth examples:

The Modular Program Constructor (MPC) has been designed to work with
JSim's Mathematical Modeling Language (MML).  MPC is a pre-compiler written in
Java. It reads an input file, FileName.mpc, and generates an output file,
FileName.mod, a JSim model file. The input file combines MML with “directives”
embedded as comments and is able to utilize code from other JSim model files
%” so they are comments. Directives control the identification, fetching, 
relabeling of variables and parameters, and assembling and recombining code into 
new equations.  MPC currently has thirteen directives:

%COM (comment directive not copied to final model file)
%START codeBlockName
%END codeBlockName
%INSERTSTART codeBlockName
%INSERTEND codeBlockName
%STARTDELETE
%ENDDELETE
%  continuation, used only with GET, REPLACE, and COLLECT directives
%GET Model.mod codeBlockName (“oldName1=newName1”, ...)
%SETGLOBALVAL %replacer%=("replacement")
%REPLACE %replacer%=(“replacement1”, ... “replacementN”)
%ENDREPLACE
%COLLECT(“variableName”)

Download the presentation and MPC Guide for details (below).

Project file contains the ODE generated version of the diffusion equation using
the SETGLOBALVAL directive and finite difference approximation and compares the 
result with the PDE solution. (Run setglobalval model).

Project file shows an ode model of a transporter between two compartments and
a pde model of a four species transporter both generated using much of the
same code. (run getODE and getPDE; run Loops on getPDE to explore the effect of
cold substrate on the outflow of tracer substrate.)

Final three models illustrate generating models sequentially to build reuseable
models of increasing complexity to simulate an organ-level model with heterogeneous
flow for two substrates. The models are
BTEX30: a three region model (capillary, interstitial fluid region, and
        parenchymal cell) with flow, diffusion, exchange between regions, and
        consumption for single metabolite A. (Plotted on BTEX30plotpage.)

The following two models are plotted on plotpages with prefix B30.
BTEX30A2B: two copies of BTEX30 for two species with enzymatic conversion of
           metabolite A to metabolite B in parenchymal cell.
BTEX30A2B10paths: a copy of BTEX30A2B is modified removing the flow declaration.
                  A ten flow path model is generated combining 10 copies of the
                  modified BTEX30A2B model with the multiflow algorithm.