SeaDAS Command-line IDL Functions

All SeaDAS data processing programs, and most of the IDL functions available in SeaDAS can be run in two ways:

via the SeaDAS Graphical User Interface (GUI)
via SeaDAS IDL commands (submitted either interactively or non-interactively)

The SeaDAS GUI can be a good way to learn a program's functionality, but often it is more efficient to use the SeaDAS command-line or Unix command-line (especially for automating data processing and manipulation). To see if a SeaDAS GUI function is available in command mode, consult this webpage or use the function's help page, which will indicate if there is a corresponding IDL command. Many, but not all of the functions of the general display program are available in command mode.

SeaDAS commands and/or IDL statements can be submitted interactively either as individual commands or in ASCII script files. These script files may also be run non-interactively to process data and/or create output images. (See these examples and also the SeaDAS Startup Syntax.)

The following table summarizes all of the SeaDAS IDL commands except for the data processing functions.

General image and graphics display.

load	Load SeaWiFS, MODIS, OCTS, CZCS, MOS, AVHRR SST, SeaDAS Mapped, flat, binary, HDF, PNG, or true color files.
display	Display any loaded product in a seadisp display window.

Functions on loaded bands which create new bands

mband_cmd	Create new bands with user-defined calculations on loaded bands.
mapimg	Map project any loaded navigable product.
bathyimg	Bathymetry image generation.
band_avg	Average any number of loaded bands.
band_diff	Difference any two loaded bands.
band_sum	Sum any number of loaded bands.

Functions on either loaded bands or displayed images

out, /data	Output raw or geophysical data values.
out, /nav	Output latitude/longitude values.
out_rline	Output points or line segments (ship track) image data.
out_ascii	Output raw, geophysical, latitude, longitude, pixel, line values.
loop	Loop through any sequence of loaded bands and/or displayed windows.

Functions on displayed bands only

coast	Overlay coastline and optionally landmask, etc.
grid	Overlay gridlines and/or labels on any loaded navigable product.
landmask	Overlay landmask graphics on any loaded navigable product.
cbar	Put a color bar on the displayed image.
vector	Overlay vectors on the displayed image.
load_graph	Load bitmap graphics from a flat file or an HDF file.
loadpal	Load a color palette into the specified SeaDAS color table.
loadgp	Modify default graphics colors.
out, /display	Output image display.
out, /graph	Output image graphics.

Miscellaneous display functions

clear_up

Close all display windows and free memory.

Miscellaneous utilities

sdwfont	Set default widget font.
sdpfont	Set default plot font.

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Authorized by: gene carl feldman