Creating the  logfiles: (top)

• Each entry contains a 8 bytes ascii time, 8 byte ascii data, 47 bytes of status (bit) information, 32 (short) meter values.
  
• The record length is : 8 + 8 + 32*2 + 47 = 127 bytes.
  
• Entries are written whenever the status changes or at least once every 30 minutes.
• The data is stored in the 723.LOGS file.
  
• The program can handle up to 32K entries (it uses a short int to manipulate things?).
  
• Whenever the logfile  begins to fill up:
• in dos  the operator uses bkzip to create a zipped copy of the file:
• bkzip outfile  723.LOGS
• for floppy we usually use:
• bkzip b:mmddyy.zip 723.LOG
• After zipping the file, you can delete 723.LOGS.
• you can also delete the file from within the 723 program by:
• go to misc screen (enter misc)
• set the logfile number to 0
• say yes to ok to delete the file.

Generating  plots from the logfiles:  (top)

• Plots can be generated for:
• the 47 status bytes
• the 32 meter values.
  
• The logfiles are moved to linux via floppy disc.
  
• I'm storing the logfiles at /share/megs/phil/x101/sband/logdata/
  
• The idl routines to generate the plots:
• @phil   .. then @sbinit to initialize the paths for the sb routines.
  
• sblogget() - input a log file
• sbinpstatinfo() - input file describing how to plot the status bytes.
• this routine reads an ascii file to determine what to output.
• See  idl/sb/statInfoStd.dat
• If you wanted to change how the status bits are grouped, and plotted,  just edit this file (or a copy of it and then pass the copy to sbipstatinfo().
  
• sbplotstat()  - plot the status info
• sbplotmet()  - plot the meter info
• to get idl help on these routines:
• explain,sbdoc
• explain,sblogget    etc..
  
• A script to input and plot logfiles can be found at:
• /share/megs/phil/x101/sb/plotlogs.pro
• Some idl program can then be used to make plots of the status and meter values.

Check date range in logfiles

Logfile plots:  (top)

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