[Antelope] Steim Compression Error

[Hank Ratzesberger]

Hi,

We have a program that calls the library routine trapply_calib then  
saves
the data to a new database.

We recently noticed that some resulting traces have point "artifacts"
that are way out of range and looked further to find this message
in our log files:

trcopy_osx: The difference -2147483648 between 0 and -2147483648 near  
sample #0 cannot be represented in a Steim level 2 compressed record

The program is running on an Intel Mac running Leopard.
We are running some more tests to see if the problem does not
occur on other platforms.

We do not fill gaps.  The problem occurs on files that have no gaps.

Any thoughts on why we get this error and what we might do about it?
We could always drop the first data point -- if we knew how.

Thanks,
Hank


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