PSN-L Email List Message
Subject: WinQuake Volume Files
From: Roger Sparks rsparks@..........
Date: Thu, 30 Aug 2007 06:49:04 -0700
Bob McClure made the suggestion that more people use the WinQuake volume
file option which provides a very convient way of combining up to three
traces into one PSN file.
There are some limitations on the multiple trace option. /Only event
files that have the same start time, sample count, sample rate and
sensor type (displacement, velocity or accelerometer) can be added to
the the same Event Window/.
With an initial file displayed, use the WinQuake File/Add menu to find
and pick the additional files that may be added. /Only files saved at
the same time will show on the directory which is brought up by the Add
A volume file can also be made using filtered data so that both the
original and filtered traces can be displayed on one screen. The Add
menu is no help here because the original and filtered files have been
saved at different times. Here is a method around this limitation which
I previously posted in February of 2006:
Assume the goal is to filter a recording and display both the filtered
and unfiltered trace in one window.
The steps in WinQuake:
1. WinQuake opens with files listed in the "Open" screen. Select the
quake to be displayed and click on "Open File" button
2. Perform the filter operation and save the filtered file with a new
name. This is done in the "File Save" menu by modifying the name in the
"File Name" window. Click the "OK" button.
3. Close the window containing the filtered file. That should put you
back to the "Open" screen with the list of event files which now
contains the filtered file.
4. Select both the filtered and unfiltered files by using the shift key
while selecting the second file. Both files should be highlighted.
Click the "Open File" button.
5. You should now see the traces from both files in the main WinQuake
window. Click the "Save" button.
6. In the "File Save" window, you will see both names in separate
"File Name" windows. Find the "Dataset Volume" check/button and click
to place a check in the box One of the file names will disappear,
leaving only one file name. Modify the name (if desired) and click the
"OK" button. Both files will be saved as a volume with the modified name.
7. Here is a link to the volume that I made as I typed these
Once opened, you can look at either individual file by clicking the
"View" button. The drop-down menu choice "Display Record" or "Select
Record" both give drop-down menu choices to examine the traces
My thanks to Bob who helped and inspired me to learn how to use this new
WinQuake feature. Thanks also to Larry Cochrane who wrote WinQuake with
all its useful features.
Public Seismic Network Mailing List (PSN-L)
[ Top ]
[ Back ]
[ Home Page ]