Module. SMS saves all its working data and settings in project files. These
SMS created project files are given the project's name followed by an extension.
In this chapter, the primary SMS project file is expressed as project.spr
while other SMS project files are designated in the text as project.ext.
Build STWAVE Cartesian Grid
To begin building a grid in SMS, the input bathymetry (xyz) file should be in
column format, with comma-, tab-, or space-delimited fields. The bathymetry
file may include a file header of any number of lines. These lines may be used
for recording the coordinate system, vertical datum, source of data, point of
contact, and other pertinent information. SMS can perform coordinate system
conversions, add information from nautical charts by digitizing sounding depths,
and import map images.
The following series of SMS instructions illustrates the development of a 2-D
grid file (project.dep) that is used as the input bathymetry file for STWAVE
(Chapter 3, "Bathymetry"):
Start SMS.
a. Open and read bathymetry file, YAQbath.xyz, and make necessary
coordinate system conversions:
1. Scatter Module -
(a) File | Open->YAQbath.xyz.
(1) File Import Wizard dialog automatically displays. Apply
defaults with these exceptions:
i. Scatter Options: Tolerance = .1
ii. Convert bathymetry units from feet to meters.
♦ Current Horizontal System:
State Plane NAD27, Oregon North, meters.
NGVD27, meters.
♦ Convert incoming data from:
State Plane NAD27, Oregon North, feet.
NGVD27, feet.
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Chapter 5 SMS User Interface
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