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Modelit creates scientific software and carries out research. Our main discipline is road traffic engineering, and notably the mathematical aspects of it like travel time forecasting, automated incident detection, Origin-Destination matrix estimation and (equilibrium) traffic assignment. But the activities of Modelit are not restricted to this. We develop scientific software for disciplines that require highly interactive visualization tools and lend itself to the application of mathematical tools like statistics, optimization and linear algebra.
Our main activities are:
- Creating and maintaining turn-key applications for the visualization, validation and analysis of data obtained from sensor networks;
- Creating data driven web portals and dashboards;
- Development and optimization of algorithms;
- Carrying out impact analysis and evaluation studies;
- Taking care of periodic reporting of accessibility indicators;
- Creation of ready to use software components for the Matlab community.
Traffic engineering
- Validation of traffic data
- Calculation and publication of accessibility indicators
- Estimation of (dynamic) OD matrices
- Development of incident detection algorithms
- Single and Multiuserclass traffic assignment models
- Traveltime prediction
- Processing of Floating Car Data
- Visualisation, analysis and publication of traffic data
- Discrete choice modelling
Coastal protection
- Validation of waterlevel measurements
- Modelling of waterlevel in rivers
- Validation and processing of coastal morphology data
- Validation of wave data
- Publication of yearly wave measurement reports and storm reports for the IJsselmeer and Waddenzee
- Prediction of stormsurges with neural networks
- Provide access to the DONAR and LOL (National Database for depth soundings) databases
- Composing of Bathymetric charts
Modelit does not only make desktop applications but also web applications. For this purpose Modelit has developed the Webserver toolbox. This toolbox makes it possible to build the back-end in Matlab, so the power of Matlab can be used to build mathematical models. While the front-end can be built with libraries or frameworks such as Angular, React or Dojo. Examples of webapplications that are developed by Modelit are:
- Tripcast, route planner with actual and predicted traveltimes
- Trajectbeheer, monitoring of traffic on primary and secondary roads
- Hotspots, measuring the effect of speed enforcement
- Accessibility map for the Netherlands
The front-end for these web applications is made with Angular4. And the back-end is implemented in Matlab. All the web applications are deployed as Docker containers on one of Modelit's own servers.
Most of our application development is done in Matlab. Matlab has become the standard language for numerical computation, mathematical modelling and visualisation of data in the last decades. Using the principle "Use the best commercial tools available and develop new tools when necessary" has lead to the development of various toolboxes which make it possible to use Matlab as a fully fledged programming language while preserving the typical advantages of Matlab. Modelit differs in this approach from other providers of tailor-made Matlab solutions. Examples of toolboxes that were developed by Modelit are:
- Matlab Application Framework; the framework for all our applications
- Matlab Layout Manager; a layout manager for complex GUI's
- User Interface Toolbox; integrate Java components in Matlab applicaties
- Webserver Toolbox;
- XML toolbox for Matlab;
- Network modelling toolbox; building blocks for all applications for traffic-engineers
- Distributed computing for Matlab; remote execution of Matlab functions
- In memory compression; make extremely large datasets accessible as arrays
- Docutool; automatic generation of sourcecode documentation
Java is an important component in our applications. Using Java enables us to quickly develop an attractive and useful software solution for every mathematical problem. If needed our applications can be deployed as compiled stand alone applications for which no Matlab license is required. Examples of applications developed by Modelit are:
- DelftOD (proprietary), visualisation and analysis of traffic data on corridor level
- TRIP (proprietary), visualisation and analysis of traffic data on network level
- Maria (RWS-RIKZ), visualisatie, validation and acceptation of depth soundings
- Melissa (RWS-RIKZ), validation waterlevel measurements in rivers and in coastal areas
- DiaInspector (RWS-RIKZ), visualisation van timeseries from the Donar database of Rijkswaterstaat
- WAVIX (RWS-RIKZ), model based validation of wave data based on neural networks.
- Stormnet (RWS-RIKZ), prediction of stormsurges with neural networks.
- SMARA (TNO/RPB), network model for traveltime prediction
- SMARTMUC (TNO), multi-userclass traffic assignment model
- Davinci (RWS-AVV), visualisation and validation of the traffic data
- Fix, Database and analysis tool for fermentation data
- FermBase, a datamining tool for the analysis of batch processes
- FermView, online tool for monitoring of batch processes