## 1. Visualizing functions over a mesh

The next step is to visualize function over the mesh. The source code that generate our output is available in myexporter.cpp, presented in the previous section.

You can visualize data via :

• `$HOME/feel/myexporter/np_1` or • `$FEELPP_WORKDIR/feel/myexporter/np_1`.
We discriminate output directories based on the name of the simulation (the parameter `_name` in the environment), the number of process (`mpirun -np …​`) and the type of the chosen exporter
``--exporter.format={ensight|ensightgold|gmsh|...}``