[Antelope] Missing samples after trapply_calib

[Hank Ratzesberger]

Hi Users,

As I have mentioned here before (and received much help with, thank  
you),
I am calling rotate_to_standard() to correct some older sensor data.

The issue I have is that I get one less sample after this process. I  
have
seen this problem in other code.  What is common is the call to  
trapply_calib.

trimming out the error handling, I am not doing much more than this:

trload_css( db, "time", "endtime", &tr, 0, 0 )
trapply_calib( tr )
result = rotate_to_standard( tr, newchan ) ;
tr = dbsubset( tr, "chan =~ /^..[ZNE].*/", 0 );
trapply( tr, rerange, (void*)&db ); // re-apply the calib
trsave_wf ( tr, dbout, "sd", fmt_str, trOVERWRITE ) ;	

If anyone has a quick work-around for this...  I was thinking that  
perhaps
it has something to do with the compression, however, the missing sample
(if the sample time has not changed) is the last sample -- the last  
sample
is dropped.

Thanks for your time.

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--Hank

Hank Ratzesberger
NEES at UCSB
Institute for Crustal Studies,
University of California, Santa Barbara
805-893-8042