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README.md

Event Visualisation Workflow

This module contains DPL worflow, which can be used to produce data (in JSON format) to be displayed be o2-eve. Workflow may be used:

  • on EPN to produce data which are then copied to online visualisation machine in P2 (see process description \subpage refEventVisualisationScripts)
  • locally to make visualisation based on simulated data

Prepare data based on simulated data

before one starts steps described below, please verify that:

  • for o2-eve-export-workflow step you should:
    • start within the folder where simulated data was produced
    • you need to store in the folder file ITSdictionary.bin and MFSdictionary.bin (available from O2-2288 jira)
  • for o2-eve step you should:
    • have in the working folder:
      • .o2eve_config file (available from EventVisualisation/Scripts)
      • o2sim_geometry.root (copied from simulation folder)
      • o2sim_grp.root (copied from simulation folder)
    • have (somewhere) folder with json files (f.e /home/ed/jsons)
    • have (somewhere) folder with simplify geometry files (f.e /home/ed/geom/O2)

To visualise a simulated data one should:

  • Run simulation
# for example:
enter dev
$O2_ROOT/prodtests/sim_challenge.sh -n 5 -s pbpb
  • Run Workflow in folder with files produced by simulation
o2-global-track-cluster-reader --track-types TPC,ITS --cluster-types TPC,ITS | o2-eve-export-workflow --display-tracks TPC,ITS --display-clusters TPC,ITS
  • Run o2-eve pointing a folder where produced *.json files were stored (see description # Event Visualisation View)
enter dev
o2-eve -j -d /home/ed/jsons -o

o2-eve-export-workflow command line parameters:

parameter default value description
jsons-folder jsons name of the host allowed to produce files
eve-hostname name of the host allowed to produce files (empty means no limit)
eve-dds-collection-index -1 number of dpl collection allowed to produce files (-1 means no limit)
number-of_files 300 maximum number of json files in folder (newer one will replace oldest)
number-of_tracks -1 maximum number of track stored in json file (-1 means no limit)
time-interval 5000 time interval in milliseconds between stored files
disable-mc false disable visualization of MC data
display-clusters ITS,TPC,TRD,TOF comma-separated list of clusters to display
display-tracks TPC,ITS,ITS-TPC,TPC-TRD,ITS-TPC-TRD,TPC-TOF,ITS-TPC-TOF comma-separated list of tracks to display
disable-root-input false disable root-files input reader
configKeyValues semicolon separated key=value strings ...
skipOnEmptyInput false don't run the ED when no input is provided
min-its-tracks -1 don't create file if less than the specified number of ITS tracks is present
min-tracks 1 don't create file if less than the specified number of all tracks is present
filter-its-rof false don't display tracks outside ITS readout frame
filter-time-min -1 display tracks only in [min, max] microseconds time range in each time frame, requires --filter-time-max to be specified as well
filter-time-max -1 display tracks only in [min, max] microseconds time range in each time frame, requires --filter-time-min to be specified as well