Integration of visualization and scientific calculation in a software system

The problems and advantages of integrating scientific computations and visualization into one common program system are examined. An important point is the direct feedback of information from the visualization into an ongoing simulation. Some strong and weak points of the varying approaches in different software packages are shown. The visualization component of the authors´ program system and the advantages of its integration into the overall system are explained. The weak points in their system and the work remaining to deal with them are described