Chap. 1 : General introduction

post_it has been developped in IDL by Eric Guilyardi. It uses SAXO routines which has been developped by Sébastien Masson. post_it may help visualise and analyse netcdf data outputs from models automaticly without knowing properly the SAXO routines. However I recommend the user to have some notions of IDL to use this software. A good way to do this is also to read the SAXO documentation on ​http://forge.ipsl.jussieu.fr/saxo/

Directories and files

You should create two directories in your home directory :

• 'POST_IT' (where to download the sources through svn)
• 'SAXO' (which can be a link to Sébastien Masson's directory '/usr/home/smasson/SAXO_DIR/SRC/' if you have an account in LOCEAN or once again dowload the sources through svn).

post_it has a new structure since it has been managed by a svn server. The 'POST_IT' directory contains 7 main directories :

chromios.locean-ipsl.upmc.fr:/.autofs/home/mklod/POST_IT> ls
config  doc  grids  out  procs  tools  usr
chromios.locean-ipsl.upmc.fr:/.autofs/home/mklod/POST_IT>

The main files which the user will have to change are :

hromios.locean-ipsl.upmc.fr:/.autofs/home/mklod/POST_IT/usr> ls -l
-rw-r--r--        1 mklod lodyc  2956  Jul 12 17:52 init.pro
lrwxrwxrwx        1 mklod lodyc     8  Jul 11 18:23 i.pro -> init.pro
lrwxrwxrwx        1 mklod lodyc     5  Jul 11 18:26 p -> p.pro
-rw-r--r--        1 mklod lodyc   8198 Jul 17 17:59 plt_def.pro
-rw-r--r--        1 mklod lodyc  63820 Jul 17 19:10 post_it.pro
-rw-r--r--        1 mklod lodyc     45 Jul 11 18:25 p.pro
lrwxrwxrwx        1 mklod lodyc     18 Jul 11 18:23 r.pro -> ../procs/reset.pro
chromios.locean-ipsl.upmc.fr:/.autofs/home/mklod/POST_IT/usr>

Launch IDL and POST_IT

• Parametrize the init.pro file (the path variable where to find the POST_IT and SAXO directories -> mandatory ; other directories such as homedir -> you can leave the default values).
• Launch idl in the 'usr' directory.

chromios.locean-ipsl.upmc.fr:/.autofs/home/mklod/POST_IT/usr> idl
IDL Version 6.2 (linux x86 m32). (c) 2005, Research Systems, Inc.
Installation number: 500138.
Licensed for use by: CNRS/ IPSL
IDL>

• Execute the 'init.pro' file in the IDL window (@init or @i if you made a link : ln -s init.pro i)

IDL> @i
% Compiled module: KEEP_COMPATIBILITY.
% Compiled module: FIND.
% Compiled module: PATH_SEP.
......................

• Execute the 'post_it.pro' in the IDL window (@p or p if you made a link : ln -s p.pro p)

IDL> p
% Compiled module: P.
% Compiled module: POST_IT.
% Compiled module: DEF_WORK.
% Compiled module: PLT_DEF.
% Compiled module: DECODE_CMD.
........................