Perspective -- Point Features -- By: Tony M.
Triton Imaging Inc. Engineering Office 2121 41st Avenue, Suite 211 Capitola, CA 95010 USA 831-722-7373 831-475-8446 sales@tritonimaginginc.com support@tritonimaginginc.com © 2012 TRITON This user guide is provided as a means to become familiar with TRITON’s software through an explanation of the options available for processing sidescan data. The user interface presented in this guide is subject to change to accommodate software upgrades and revisions.
Table of Contents Point Features ........................................................................................ 1 Feature File Format .................................................................................. 1 Adding Features to Perspective ..................................................................... 3 Feature Information ................................................................................. 4 Displaying Features on Subbottom Profiles ..................................
Point Features Features are used in Perspective to allow the user to import geolocated ASCII data for displaying locations in the map and profile views, and when relevant vertical information on the profiles such as from boreholes or cores. In the main map window, there is a Feature file tree node where ASCII point data is organized in the project. For viewing the vertical information (soil type, density, shear strength, etc.
Specifications for each section are as follows: LOCATION: The first two columns of the feature file are for either NorthingEasting values or for Latitude-Longitude. The third column is to indicate the types of coordinates used. Both of these files will import into the same location without the projection wizard asking what projection/datum to select. Perspective will assume the datum is WGS84 and that values in meters are for the project UTM zone.
Adding Features to Perspective Before adding feature files to Perspective it is important to first create a Feature Group to add the feature into. Feature Groups are used to organize features into user defined groups. Each group is defined by a group name used to identify the group in the file tree, with a symbol for displaying the location of the feature on the map view and also a user selected color.
Feature Information When feature files are added to the project, the information embedded in the ASCII file is extracted and displayed in an information dialog. The information dialog can be launched by right-clicking on the individual features in the file tree. Information displays for all feature types are identical.
Displaying Features on Subbottom Profiles For features that include vertical information such as sediment type, it is possible to display this information overlain on subbottom profiles loaded in the project. Display options are found in the subbottom Profile Settings dialog under the Features tab. Shown below is an example with 5 feature groups listed on the left and all the unique values (in this case sediment types) identified with a pre-selected color.
