This directory ~twistonl/online/anal_scal contains a MIDAS
style analyzer to make history plots of the scalers. 

The program is called anal_scal. 

What it does:
-------------
It links to online data and reads in the SCALER events.
It makes  history plots for 1000 seconds of each scalers
at histogram number (1000 + i) where i = scaler channel. 

Nov 2001, there are 18 channels read starting with the 
scal in the lowest slow number.

hbook is linked to a shared memory section which name is 
defined in the ODB: "/ScalAnal/Output/Global Memory Name"
(Nov 2001, default is ONSC)

After each run the hbook file is saved. The filename is
defined in the ODB: "/ScalAnal/Output/Histo Dump Filename" 
(Nov 2001, default is scal_hisxxxxx.rz where xxxxx is the 
run number)

How to run it:
-------------
From a window on account twistonl on midtwist, 
>cd ~/online/anal_scal
>anal_scal -l 

Using PAW to look at the histograms:
------------------------------------
Either you can look at online data or saved files.
For online data, use the PAW commands:
   global_sect  ONSC
   Cdir //ONSC


Compilation: 
-------------
It is compiled from the two files analyzer.c and scalhist.c
You should only need to change scalhist.c for changing the 
histograms.  

>make   ---> will generate program anal_scal

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Renee Poutissou, Nov 2001