Install guide

Updating Seismic and Horizon Statistics
The seismic data set table in OpenWorks includes attributes for trace count, coverage %,
number of extents and total volume size. These are currently not maintained by
SeisWorks, but provide useful metadata to the user and data manager if loaded correctly.
For 3dv and 3dh volumes, trace count is stored and can be read directly. For bri and
cmp volumes, reading traces is required to obtain a valid trace count. The algorithm allows
for decimation to improve performance at the expense of accuracy. For example, if a
decimation of 3 is specified, every third line and trace is read, i.e. one trace in 9. The
resulting count is then multiplied by 9. The computed trace count is not exact, but the
process runs 9 times faster.
Command-line usage:
prompt> seisStats
Usage: seisStats owproj survey ?decimation? ?forceFlag?
3D example: OW project SWDEVKIT survey devnor, default decimation of 1 (i.e. no
decimation on read), force re-computation (forceFlag=1):
prompt> seisStats SWDEVKIT devnor 1 1
If survey name has spaces, the following syntax is required:
prompt> seisStats SWDEVKIT "{devnor}"
Use All3D for all surveys in the project.
2D example:
prompt> seisStats SWDEVKIT 2D
The computed attributes can be seen in the SeisWorks seismic view, Seismic Info dialog.
Results for multiple volumes can also be viewed in Seismic Data Manager: use the
column chooser to select these attributes, which are not displayed by default.
The horizon data table in OpenWorks includes attributes for total samples, coverage %
and mean, which are not maintained by SeisWorks, but provide useful metadata to the
user and data manager if loaded correctly.
Command-line usage (3D horizons only): use forceFlag=1 to force re-computation:
prompt> hrzStats3D
Usage: hrzStats3D owproj survey ?forceFlag?
prompt> hrzStats3D SWDEVKIT devnor2
An alternative way to execute seisStats and hrzStats3D is to use the SeisStats or
HrzStats3D graphical user interfaces. First source the WebApps environment then type
the appropriate command. SeisStats/HrzStats3D may also be launched from the
wowgui interface.
prompt> source $OWHOME/WebApps/templates/wow.login
(if C-shell)
prompt> . $OWHOME/WebApps/templates/wow.profile (if Bourne shell)
prompt> SeisStats
prompt> HrzStats3D
WOW 5000.0.1.11 Release Notes Page 61 of 104 March 2014