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Landmask Function (landmask)

Description: For all navigable file types, this function adds land mask graphics on the current or a specified window.  The file used for this function is the same file ($SEADAS/data/landmask.dat) used in the SeaWiFS L2 processing.  The resolution of this file is 128 points per degree (about 900 meters near equator).

[Interactive Mode][Command Mode]

Command mode:

Usage:landmask, fbuf=fbuf, color=color, help=help

Examples:

1. Mask the land with graphics palette 1 (default) on the current seadisp window:
landmask
2. Mask the land with graphics palette 7 in window #3:
landmask, FBUF=3, COLOR=7

Interactive mode:
 

Action items:

Options for all navigated files:

Color	The color for the land mask.  Click the mouse on the graphics color bar to specify a different color.
Mod	Bring up the widget to allow modification of the graphics color hues.  Once modified, the changes will apply to all currently displayed images.
Apply Mode	Replace Graphics Replace all existing graphics in the display window with the land mask graphics. Overlay Overlay the land mask graphics on top of any existing graphics in the window. Underlay Place the land mask graphics on top of the image, but underneath all other graphics in the window.
Go	Apply the land mask graphics to the current window, using the options above.
Help	Show this help file in local HTML viewer.
Quit	Exit this widget.  All settings will be retained the next time the land mask setup widget is opened.