Triton TritonMap - Manual (Page 111)

June 2004 DelphMap™ User's Manual
If your profile is just that of a bathy layer, you get a profile showing
just depth. The layer’s name appears in the upper right corner of the
displayed profile. Figure 48 shows an example of this.
If you move your pointer from the imagery in the Main Display
window to the Display Profile window, the system might draw a line
in your imagery without an apparent termination point (i.e., the end of
the line lacks a green box). Such an unterminated line is not part of
the display’s profile; it’s just a stray line. You can ignore it.
If you put your pointer in the Display Profile window, a vertical white
line with a white circle on it interects the profile line. As you move
your pointer, the circle moves along the profile line and is
constrained to it, indicating your position along the profile. At the
same time, your geodetic position, either in northings and eastings or
in latitude and longitude, also is shown numerically in the status bar.
The starting and ending points of your reported navigation data
remain fixed for the displayed profile, unless you return to the main
display window and extend any existing line, thus extending the
display profile.
6. If you decide to stop using this function during this procedure, click
the icon again to return the icon to a non-selected state. (Choosing a
different icon also deselects this function.)
Profiles Derive Information from Layer Types
The kind of information you get in your display profile depends on the type of
layer you’ve drawn on in your main imagery:
• If your display profile is just that of a sidescan layer, the system displays
an amplitude graph. The points of the amplitude graph represent the
signal strength of the pixels along the path drawn in the imagery that
were used to generate the profile. Again, the layer’s name appears in
the upper right corner. Figure 47 shows an example of this kind of
graph.
• If your display profile is just that of a bathy layer, the system displays a
depth graph. Figure 48 shows an example of this kind of graph.
Chapter 6: Displaying Image Profiles
97