Added script to plot it plotting_microenv_tumor.py (by Arnau Montagud) in ./matlab
Added script file to run this example as script_3DtumorX.sh
To compile this GS_BioFVM_X/GS_BioFVM> make 3DtumorX and then run using sbatch script_3DtumorX.sh
The main Makefile was modified to incorporate this example.
The executable will need to be deleted manually from the examples directory (before committing to Git)