[OpenMadrigal-developers] Modifications to fof2 loading program

[William Rideout]

As requested by Glen,  I'm planning to make changes to the fof2 loading 
programs.  As a review, there are at present two fof2 loading programs, 
that take a text file Glen creates and adds that new fof2 data to the 
Madrigal fof2 file.  One supports the old, non-standard madrigal fof2 
file, which contains time parameters in the data itself, and the other 
supports the present fof2 file.  The old fof2 file is maintained only 
because its format is hardcoded into the Fortran madlib, and Larisa 
still uses that library in her fof2 analysis.

With the present loading programs, all added data must be after the last 
existing data in the Madrigal file.  This means that the only way to 
insert data in-between existing data is to go back to an old version of 
the fof2 file, and reload all the data after the last record in the old 
file.

With the new version, data can be added at any point in the fof2 file. 
If the data already exists in the madrigal fof2, it will be overwritten 
with new data from the text file.

Note that in the new version the entire day will be overwritten, so to 
change data for a given day, the entire day worth of new data must be in 
the text file.  That means to change one fof2 value, you must put all 48 
values in the test file.  Also, the new data in the text file must be 
chronological (okay, this last requirement is to make it easier to code, 
but I think its not unreasonable).  Out of order data in the input text 
file will cause an exception.

Please let me know if you have any comments.

Bill

-- 
Bill Rideout
MIT Haystack Observatory
Email: brideout at haystack.mit.edu
Phone: 781 981-5624