.. _post.previmer.rst:

Extract data from Previmer database (Section **previmer**)
==========================================================

* This section extracts data from Previmer database

* If this section is not in your configuration file

1) Download it from svn and add it in you configuration file

::

 svn checkout https://forge.ifremer.fr/svn/previmerchainop/trunk/formation/

::

 service7>693% pwd
 /work/lpineaug/FORMATION_CHAINOP/formation
 service7>694% ls
 section_previmer.cfg  section_wave.cfg


2) Add *previmer* in your treatments, section **treatments**

:: 

 [treatments]
   #list = ['meteo', 'obc', 'river', 'rank_0', 'rank_1', 'format_oco','demerliac','mirror_copy','finalize']
   list = ['meteo', 'obc', 'river', 'rank_0', 'rank_1','format_oco','demerliac','mirror_copy','finalize','previmer']
   
3) Add previmer directory in section **directories**

::

 [directories]
   previmer_dir = '%(operational_dir)s/inputs/'


* To extract data from Previmer database, launch **previmer**:

::

    launch_mangae config_mangae.cfg -s 2014-01-01,00:00 -e 2014-01-03,00:00 --only previmer


* To follow if the run is OK
   * check if **previmer** is **OK** in **f1-mangae.xml**
   * in case of problem, check the log file **./logs/MANGAE2500-r1630/20140101_20140103/previmer.log**


* Output file : **./inputs/MANGAE2500-r1630/previmer/MENOR.nc**

* List of files that have been concatenated:  **./inputs/MANGAE2500-r1630/previmer/PREVIMER_F2-MARS3D-MENOR1200_files.txt**


::

  #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  # Section previmer
  # Recuperation des donnees de modeles previmer
  #  arguments : ncrop = nb de maille exclues du modele par ncks lors de la recuperation
  #              si imin,imax,jmin,jmax : ncks sur le modele source (pas pris en compte si ncrop)
  #              step : frequence du modele
  #              make_regularize : Passe les dimensions du modeles de ni,nj a lon,lat et permet ensuite  
  #                                d'extraire une zone avec lonmin,lonmax,latmin,latmax (True par defaut)
  #                                Necessaire pour d'autres functions (combine ou fusion) - gourmand en memoire
  #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  [[previmer]]
    depend = []
    description = 'Preparation of previmer data'
    name = 'previmer'
    launch = 'tools.previmer.launch_previmer'
    function = 'prepare'
    #memory = '20000000000'
    [[[arguments]]]
      model = 'PREVIMER_F2-MARS3D-MENOR1200'
      option = ''
      verbose = True
      out = 'MENOR.nc'
      lonmin = 8.0
      lonmax = 10.0
      latmin = 40.5
      latmax = 43.5
      #variables = ['H0','TEMP','SAL','UZ','VZ','hc']
      make_regularize=False


* You can specify geographic boundaries and variables

* For Previmer model, you can choose between:

  * **PREVIMER_F1-MARS3D-MANGAE2500**
  * **PREVIMER_F1-MARS3D-MANGAE4000**
  * **PREVIMER_F1-MARS3D-MANGA4000**
  * **PREVIMER_F2-MARS3D-MENOR1200**
  * **PREVIMER_F2-MARS3D-MENOR1200-SN** (MENOR avec Spectral Nudging)
  * **PREVIMER_F1-MARS3D-MANGA4000**
  * **PREVIMER_L1-MARS2D-ATLNE2000**
  * **PREVIMER_L1-MARS2D-MANGA700**
  * **PREVIMER_L1-MARS2D-MANE250**
  * **PREVIMER_L1-MARS2D-MANW250**
  * **PREVIMER_L1-MARS2D-FINIS250**
  * **PREVIMER_L1-MARS3D-BREST50**
  * **PREVIMER_WW3-FINIS-200M**
  * **PREVIMER_WW3-NORGAS-UG-HINDCAST**