[d2n-analysis-talk] BdataLoc

[Brad Sawatzky]

On Tue, 27 Oct 2009, posik at jlab.org wrote:

>  BdataLoc(string, crate,slot,chan) or BdataLoc(string,crate,header,skip)
> 
>  The first is rather self explanatory, but the second I am not sure what
> they mean by header and skip. Assuming that the bit definition line has

The second use of the method looks for a header word in the data file,
then stores the word 'skip' works away from the header in the named
variable.

> the for Bdata(string,crate,slot,chan) I then try to trace this back to the
> db_DL.dat or db_DBB.dat, If I am right in my assumption I should expect
> the variables bitsX to be on crate 3, slot 5 and chan 64-71 or so. But
> what I find instead in these files is:
[ . . . ]
> bit1       crate      8    17       16
> bit2       crate      8    17       17
> bit3       crate      8    17       18

BdataLoc uses the crate/slot/channel/etc info in db_DL.dat (or
db_DBB.dat, etc).  You were looking at the hardcoded 'default' case.

-- Brad

-- 
Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
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