[teqc] Problem when combining hourly data.

Mullins, Steven Steven.Mullins at dmme.virginia.gov
Mon Jun 19 06:23:41 MDT 2006


When decimating, did you get an warning about not using the -O.int option?

! Warning ! using -O.dec option on input file without -O.int option
(if original sample interval is < 1 sec, first epoch to be decimated may not be removed)

Just a guess,


-----Original Message-----
From: teqc-bounces at ls.unavco.org [mailto:teqc-bounces at ls.unavco.org]On
Behalf Of Yunfeng Tian
Sent: Monday, June 19, 2006 1:38 AM
To: teqc support
Subject: [teqc] Problem when combining hourly data.

Hi list,

I have hourly logged data files in RINEX format, and I want to combine
them into a large one. The original sampling rate is 1Hz, and is
downsampled to 30Hz by supplying the -O.dec 30 option:

teqc -O.dec 30 *.06o > /data/new.06o

To my supprise, I found there are more than one line of INTEVAL in the
resulting new.06o file. The first INTERVAL is 30; while the other
INTERVAL is still set to 1.  Moreover, the same case occured with
-O.mo option (Only the first one is what I set; there are others which
remain unchanged).

However, if I combine the 1Hz data first, and then convert it to 30Hz,
everything is OK.

I want to know if I did something wrong with specifying the command
options in the first method.

Thank you.

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