Triton TritonMap - Manual (Page 38)

June 2004 DelphMap™ User's Manual
Metric and Geographic Grids
Clicking this icon displays a dialog box for two types of gridding —
metric or geographic — each of which can be set independently of one
another (or not set at all). The keyboard shortcut is <CTRL+G>.
• When geographic gridding is enabled, DelphMap superimposes a
geographical grid over your imagery. Grid intervals are in seconds.
• When metric gridding is enabled, DelphMap superimposes a metric grid
over your imagery. Grid intervals are in meters.
For either type of grid, you can change the intervals to get more or fewer
grid lines (thereby increasing or decreasing the density of the grid).
Note:
Choose a grid interval suitable for the area covered by your
imagery. If you choose a very small grid interval for imagery that covers a
large area, your system may take a long time to draw the grid.
Change the Color Palette Settings
Clicking this icon displays a dialog box where you can define a color
palette and palette density for each of five data types: side-scan,
bathymetry
, seismic reflector, volume, and user-defined. The data types
present in the palette window correspond to the data types that are currently
displayed in the main GIS window. If no layer is present, then all data types
appear. If some of your data displays without sufficient visual definition, this
visual aid can help boost the values of your low intensity data to make them
stand out more. Choose a color and density that gives you the best visual
results. If you select user-defined to create your own palette, the system
displays a separate dialog box where you specify minimum and maximum
values to be applied to your designed palette.
Some combinations of color palettes are especially effective for side-scan
and bathymetry data types:
• for side-scan: copper, gray or pink palettes yield excellent image detail.
• for bathymetry: just about any palette works well.
To apply the color combinations to your image, be sure to match the correct
data type to your image.
Chapter 2: Icons and Display Tools 24