SELECTED_GRAPH allows to define user-specific graphs during pre-processing (before runnig of the simulation) both in HPGeochemistry as in the coupled reactive transport codes HPx. It replaces USER_graph in standard phreeqc and adds some other functionalities to it.It works in a slightly different way: instead of defining a script with the X and Y variables of the plot as in USER_graph, it is linked to a selected_output and user_punch via the entitiy number. Thus, for each selected_output and user_punch, a number of graphs can be made via SELECTED_GRAPH for the variables in the output file linked to selected_output.


The graphs are produced via gnuplot, which should be installed by the user on the computer. The graphs itself are made after running and selecting the graph in the Graph workspace in HPGeochemistry or HPOutput. This means that no graphs are produced when running it in a batch mode - graphs are only produced during post-processing steps.


Further details on SELECTED_GRAPH are:



Examples are given of different graph types (-fig_type) for coupled reactive transport for:

  • Profiles at selected times with different variables
  • Time series at observation nodes with different variables