Searchable List of TeraScan Functions
A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z
This page lists the TeraScan functions, gives a brief description of each, and links you to a help page for each.  It also lists help pages that are overviews of various TeraScan concepts, as well as help pages for some of the TeraScan scripts and special files.

If you know the name of a function, you can find it by scrolling through the list or using the alphabet index above:

You can also search this page for a particular function name or for a keyword in the function description. Click on Edit>Find on the browser's menu bar or use alt+F and enter a keyword string, for example master. You do not have to enter a complete word or phrase. The browser will find all instances of the search string you enter.  Each listing then links to a page that tells all about the function.  

The list of contents provided on the left groups related functions into categories. You might find it useful for searching out functions for a specific purpose when you don't know a function by name.  For example, if you are searching for a math function, you could click on the Math and Stats heading to call up the Math and Statistical Functions page.  From there, you could click on the type of math you want: Simple Math, Spatial Math, Simple Statistics, or Multivariate Statistics, to get to the page you want.

A
ac    Antenna controller diagnostic command
add2line Converts ASCII formatted 2-line orbital elements to dataset format
addcat    Adds a record to the pass catalog
addhist    Adds text annotations to a dataset's history
addimcat    Adds records to a processed image catalog
addorbits    Extract orbit numbers from NAVSPUR ephemeris files
addpass    Adds an entry to the online catalog
aes_ice    Exports AVHRR TereScan datasets to AES Ice Center format
aeshrpt    Receives HRPT raw file either in Dundee or TeraScan format
align    Manually align the tracking antenna based on the maximum signal strength received while tracking a satellite
alignnorth    Positions the specified antenna to align it using a compass
altmaster Clone master file but change resolution
amsu_a_ret    Derives geophysical information from AMSU-A datasets
amsu_b_ret    Derives geophysical information from AMSU-B datasets
angles    Computes satellite and solar viewing angles
anomaly    Computes means and anomalies of variables
antenna    Antenna tracking diagnostic command
antenna alignment   Antenna alignment topics
antenna.calib    Dynamic antenna calibration data
antenna.config    Static antenna configuration data
aptin    Creates APT AVHRR datasets from APT telemetry data
archive    Performs archive tape related operations
archive_stacker Archive using DAT Autochanger stacker
argmsin    Creates VISSR datasets from GMS archive data
assemble    Pools variables from several TeraScan datasets into one dataset
atovsin    Produces AMSU and HIRS datasets from TIP/AIP telemetry files
audit    Reports the history (audit trail) of a dataset
autoalign    Align the tracking antenna based on the maximum signal strength received while tracking a satellite
autoarchive    Automatic archive process called by tsched
autoname    Creates a dataset name from satellite information
autoproc    Changes the autoarchive or postprocessing parameters for an autosched record
autosched    Add or replace autoscheduler records
autosched2    Autoscheduler called by tsched
auto_timeadj    Adds a time adjustment to an HRPT data set based on pass disk data
avasin    Ingests raw GOES S-VAS telemetry data into TeraScan TDF datasets
avcal    Converts AVHRR sensor counts to calibrated data
avcalnl    Helps compute the non-linear coefficients for AVHRR calibration on new satellites
avcloud    Computes cloud mask for AVHRR image
avfilt3    Reduces noise in AVHRR channel 3
avfix    Repairs bad or missing lines of data
avgc    Geometric correction for unregistered AVHRR datasets
avhrr    Overview of AVHRR data processing
avhrr_snow    Identifies snow cover from AVHRR data
avin    Creates AVHRR datasets from HRPT telemetry data
avsharp    AVHRR image sharpening filter
avsnow    Computes snow mask for AVHRR image

B
BAST    Pass partition definition file
BASTXXXX    Pass control shared memory
binavg    Determines average relationships between variables
bitfields    Extracts bit fields from a given variable to create new variables
blocksem    Restructure the output from readsem
burst    Separates a variable along one dimension
burst2    Separates a variable along one dimension
bvhist    Compute univariate, bivariate, or trivariate histograms
byteswap    Byteswaps files in place

C
calmag    Calibrate antenna magnetic fluxgate compass
capture    A process spawned by tsched to receive and process satellite data
capture_files    Pass schedule and catalog files
catcover    Search pass catalog for passes that match given parameters, including master dataset coverage
cca   Computes modes of covariability between two variables
checkorb    Checks validity of 1-line orbital elements in an ASCII formatted file
checkpro    Monitors the appearance of new product files into product directories
chrptin    Creates MVISR datasets from FY1-C CHRPT telemetry data
class    Classifies one or more datasets using the Maximum Likelihood method. Requires training sets created in advance
classify    Unsupervised classification procedure
clearauto    Deletes all entries from the autosched parameters file
clearmem    Clear memory locks on the shared memory
clearsched    Deletes all scheduled passes
cloudgrid    Cloud retrieval for image segments
cloudmask_script   emathp based cloud-detection script
cloudprod    Generate cloud image products
cloudprodsegs    Cloud product segment statistics and histogram file generator
cloudvec    Cross-correlate multiple masked cloud images
cloudvecfilter    Filter cloud motion vectors against model wind vectors
cloudvec_launch Operational cloud motion vector delivery script, for continuous operational  processing and data management
cloudvec_script Cloud motion vector product script, for TBB and WV data
cmdcon    Overview of the command line versions of capture control functions
cmdform    Parameter setup routines
cmdgraphics    TeraScan non-display graphics functions for product generation
coast    Creates a metafile for overlaying coastlines, rivers, and boundaries
coastfile    Specify coastline files in either TeraScan datasets or binary files
composite    Combines variables
concatenate    Joins compatible dataset variables along one dimension
const2d    Creates a two-dimensional dataset with constant value
contents    Lists dimensions, attributes, and variables of a TDF dataset
conv2line    Converts 2-line elements into 1-line elements
convec    Converts components of 2-D vector to a different type and stores them as new variables into the same dataset
convertcat    Convert an archive catalog from HP to SUN format
convolve    Computes a moving box convolution
convtbus    Converts TBUS elements to 1-line elements
coordstuff    TDF dimension and coordinate functions
copy    Array copying and initializing functions
copyatt    Copies attributes between TeraScan datasets
copydimvars    Copy dimension variables from one dataset to another
copyvar    Copies variables between TeraScan datasets
copyvardata    TDF variable copying functions
copyxfm    Copies the earth transform from one dataset to another
count    Count variable values meeting various criteria
cover    Determine coverage of master and input dataset earth transforms
czcsin    Creates CZCS datasets from NIMBUS-G ZIP telemetry data

D
data acquisition   Terascan data acquisition subsystem
datasets    TeraScan common data format (TDF)
datename    Outputs a TeraScan-like pass filename
dates    Date conversion functions
datestr    String conversion routines
dcs    DCS processing overview
dcsin    Creates DCS datasets from HRPT telemetry data
dcslib    DCS methods development overview
dcslist    Produces a printed report of a DCS dataset
dcsloc    Computes the position of DCS platforms
dcsmix    Sorts and merges DCS data from one or more input data sets, and produces one output dataset
dcsproc    Extracts sensor data from DCS messages and computes geophysical parameters
dcs_data    DCS engineering conversion and platform location data
deflate    Routines for working with piped variable data
delauto    Delete entries from autosched parameters file
delcat    Delete entries from the pass catalog
delimcat    Delete entries from a processed image catalog
delsched    Delete scheduled passes
demsched    Scheduling for non-continuous, fixed-telemetry reception
devtable    Device descriptor table for use with tape functions
dimavg    "Averages" variables over a selected set of dimensions
dimcorr    Computes statistics and correlation for two variables
dirfile    Miscellaneous directory functions
diskhogs    Remove matching files until disk space criteria met
dmdm    Overview of DMSP DMDM data processing
dmsp    Overview of DMSP satellite telemetry and processing
dmsp_simple    Read DMSP simple format archive data
doppsat    Reports the satellite down- and uplink doppler shifts
dropouts    Calculates the percentage of dropouts
dumpmeta    Performs an ASCII dump of metafile variables in TeraScan datasets
dumpvar    Dumps variable data in ASCII

E
editdim    Edits the built-in attributes of dimensions
editvar    Edits built-in variable attributes in TeraScan datasets
eggcv    Converts engineering units data for EG&G ARGOS platforms into current vector symbols
eggegu    Converts raw DCS sensor data into engineering units for EG&G ARGOS platforms
emath    Element-by-element arithmetic
emathexpr    Source file to generate executable for emathc function
embed    Embeds variable data from an input dataset into variables in an output dataset
emseti    TeraScan metafile generation package
envpath    Environment variable functions
eof   Computes empirical orthogonal functions
eof_overview    Overview of empirical data decomposition functions
eoffilt    Computes empirical orthogonal functions
eofproj    Projects eigenstructures onto a variable
ephem    Reports satellite subtrack information for a user specified pass
ephemeris    Functions determining satellite position and manipulating its orbital elements
ephtest    Estimates quality of orbital elements
epsf    Creates an encapsulated PostScript file from a dataset variable
erranaltab    Print a table of error analysis values datasets
errorstuff    Local error handling routines
erssarin    Ingests SAR data into TeraScan dataset
esa_czcsin    Creates TeraScan datasets from CZCS data
etcoords    Earth transform affine mapping functions
etmisc    TeraScan metafile generation package
etnames    Earth transform name functions
etnav    Earth transform satellite navigation functions
etop    Generates bathymetry/topography contour metafiles
etready    Earth transform ready and store functions
etx    TeraScan earth transform
etxinfo    Reports information about dataset earth location
etxll    Earth transform conversion functions
exampleprogs    TeraScan example application programs
expasc    Export variable data in ASCII format
expbin    Export variable data in binary format
expgrib    Exports TeraScan data in GRIB format
expim    Exports Terascan Dataset to Sunraster, Postscript, png, ppm, jpeg, or tiff formats
export2d    This function has been replaced by expbin
expwin    Converts xvu window file to Sunraster, Postscript, png, ppm, jpeg, or tiff formats

F
fakedata    Creates a dataset variable with artificial data
fastreg    Registers 2-D data to a user-defined base map and projection
filret    Eliminates soundings of questionable quality
findcases    Selects input data by the "select key" and saves it to the output dataset
fixcatsat Change satellite field in pass catalog records
fixcatzero    Fix zero duration records in pass catalog
fixclock    Performs time adjustment for input dataset
fixline    Removes bad data by interpolation
fixoes    Converts ASCII formatted 1-line orbital elements to dataset format
fixpasstime    Modify online catalog and system clock based on HRPT telemetry
fixpp    Modify product versus destination post processing records
fixunits    Convert variable units
flac    Creates EDIS 1B LAC or GAC format files from raw HRPT pass data
flipdim    Flips variables about a specified dimension
flippass    Flip satellite pass data end-to-end
flipsac    Prepares SAC HRPT archive files for ingest
flipsharp    Prepare ESA Sharp HRPT image files for ingest
formats    Date, time, latitude, longitude formats
framesx Frame synchronize raw bit X-band satellite telemetry

G
gac   Creates AVHRR datasets from GAC data
genegu    Main routine for converting raw DCS sensor data into engineering units for ARGOS platforms
geoph    Computes geophysical parameters from SSM/I datasets
geo_simple    Reads geostationary data in USAF SDHSUIS data format
getccsds    Extracts CCSDS application packet data from CADU frames
getconfig    Scripting tool that reads settings from $PASSDIR/system.config
getdim    Print the lengths and names of a variable's dimensions
getdmdm    Outputs formatted DMDM messages from DMDM datasets
getest    Processes raw RDS/SDS frames in .est datasets created by rdsin
getinfo    Returns information about dataset attributes
getnames    String parameter utility function
getsiteloc    Get latitude and longitude parameters
getunits    Units manipulation functions
getval    Print a single value from a dataset
glossary    Glossary of Terms
gmscal    Calibrates GMS VISSR visible and infrared data
gmsin    Creates VISSR datasets from GMS telemetry data
gmt   Displays Greenwich Mean Time
goessnd    Derives temperature and moisture profiles from GOES sounder datasets
gpatt    TDF attribute functions
gpdim    TDF dimension functions
gperr    TDF error handler
gpio    TDF variable I/O functions
gplink    TDF variable link functions
gpname    TDF name functions
gprel    TDF relation functions
gpset    TDF dataset access functions
gptype    Computes length of TDF datatype in bytes
gpvar    TDF variable functions
grad    Computes gradients with respect to dimension values or geographical distances
gsubset    Generate subsets based on earth transform coordinates
gvar    GOES NEXT GVAR reception and processing
gvar_sst    Computes SST from GOES GVAR imager data
gvarin    Ingests raw GOES GVAR telemetry data into TeraScan TDF datasets
gvarsched    Scheduling for continuous GVAR reception
gvsend    Extract several subsets from one GVAR dataset
gvslist    Displays information about passes for GOES-NEXT sounder data

H
hatch    Cross-hatched faxable images
hdftotdf    Imports HDF or netCDF formatted datasets
hirscdf    Convert a TOVS output file into a TeraScan dataset
hist    Dataset history processing
histograms    Data segment statistics and histogram file procedure
histodump    Data segment histogram ASCII dump routine
hrptin    Creates AVHRR, DCS, and TOVS datasets from HRPT telemetry data
hrptjwa    Creates datasets in JWA format from HRPT telemetry data

I
Imagecat/Imcatdir   Processed image catalog and directory
image_catalog    Processed image catalog functions
IMAPP Uses IMAPP package to produce calibrated and geo-located MODIS TeraScan datasets from direct broadcast MODIS data.
imblank  Create blank background image for overlay mask
imcorr    Cross-correlate two images to detect motion
imgrid    Generates image data from randomly positioned data
imgrid2    Interpolates image data to master grid
impasc    Import 1-D, 2-D, or 3-D ASCII data
impbin    Import 1-D, 2-D, or 3-D binary data
impbin1    Imports 1-D, 2-D, or 3-D binary data
impgrib, impgrib2    Imports GRIB datasets
impim    Imports to TeraScan dataset from png, ppm, jpeg, or tiff formats
import    TeraScan import functions
import2d    This function has been replaced by impbin
imppbm    Import pbm bitmaps for displaying charts
imscale    Scale 2-D variables to create byte-value image variables
ingtov    Calibrates and earth-locates HIRS and MSU data
initimcat    Create image catalog and subdirectory in user specified location
inpstr    Non parameter user input routines
inrange    Masks variable data outside a range of values
instant    Copy and instantiate TeraScan datasets
instantiate    TDF dataset copying routine
interpdim    Interpolates a dimension's coordinates to a different grid
inview    List passes meeting receiver and target elevation criteria
iolen    TDF dataset best/next I/O length package

K
key_tscan    Install key that allows TeraScan functions to run

L
lac   Creates AVHRR datasets from LAC tapes
lagspect    Computes power spectra from covariance functions
laminate    Laminates variables along a newly specified dimension
landcloudmask    Computes daytime land cloud mask using visible, IR, and gradient channels
last_location    Statistics on the receiving site
latsub    Creates variable and/or dimension subsets
legend    Create a multi-line text legend metafile based on input dataset
linfit    Determines the linear relation between two variables
listauto    Display contents of autosched parameters file
listcat    Display selected contents of the pass catalog
listimcat    Display selected contents of a processed image catalog
listsched    Display scheduled passes
llcontr    Creates a contour metafile from random data
llcontr2    Creates a contour metafile from evenly spaced earth-transformed data
llgrid    Creates an overlay metafile with a latitude/longitude grid
llpass    Displays data about passes on the passdisk including capturing and archiving status
llpoints    Generates a list of (latitude, longitude) points on a line between two endpoints
llsched    Display scheduled passes, including archiving and capturing parameters
llslice    Sample variable data between user specified (latitude, longitude)points
lock    Locking functions
logrun    Post process logging tool
lookup    Apply lookup table to one or more fixed point variables
lsmask    Function to update the land/sea mask database and to generate this mask for the master image
lspass    Displays data about passes on the passdisk including capturing and archiving status
lut_monitor    Monitors the ARGOS data messages received by a Local User Terminal (LUT) and stores the messages in shared memory

M
magnetic_model   Magnetic declination world model coefficients
magnify    Reduces or enlarges two-dimensional variables
manamsched    Update capture schedule based on GMS MANAM data
mansched    Manually schedule a pass
masksamp    Masks data at locations given by a set of sample locations
masklib    Masks manipulation functions
master    Generates a base map and projection for a user specified area
mastersect    Determine subsection of pass that intersects master
mastersub    Create subsets covering a master file map area
match String matching functions
mbslice    Subset variables at a given millibar level
mcmegu    Converts raw DCS sensor data into engineering units
median    Computes the median from an array of numbers
metafiles    TeraScan overlay and plot metafiles
metcal    Calibrates Meteosat infrared data
meteoprod    Generates  various meteorological  image  products  for  GMS input images
metin    Creates VISSR datasets from Meteosat telemetry data
miedr    Derives geophysical parameters from SSM/I datasets
misc Miscellaneous functions not found on all machines
mkuload    Extract MKU key data from PDUS A-format data and manage MKU device
mod_chlor Computes the chlorophyll concentration from MODIS ocean color data
modis Overview of MODIS data processing
modis_bright Converts radiance units to brightness temperatures for Terra and Aqua MODIS channels 20 through 36 (emissive bands)
modis_bt Corrects for the bowtie effect created due to the MODIS sensor scan angle in calibrated datasets from IMAPP
modis_color MODIS ocean color retrieval
MODIS_RADIANCE Converts IMAPP-calibrated HDF scaled integers to TDF MODIS radiance or reflectance units
modis_turbidity Computes the water column turbidity index, NDVI, reflectance, and aerosol optical thickness from calibrated MODIS data
modisin Creates TeraScan datasets from direct broadcast MODIS data
monitrx    Monitors receiver and bit synchronizer
montsx Monitors and programs X-band receiver
msgcat    TeraScan message catalog
mvisr    Overview of FY1-C MVISR data processing

N
nav2    Generic automatic navigation
navbox2    Select boxes for use in automatic navigation
navboxes    Automatic selection of coastal areas for navigation
navigate    Autonavigation (attitude correction) of satellite images
nearestfile    Find nearest qualified files and report to UNIX stdout
newbadval    Change a variable's bad value
newestfile    Find youngest qualified files and report to UNIX stdout
newetx    Converts earth-location attributes of TeraScan dataset to a new model
neworb    Converts ASCII formatted orbital elements to dataset format
newsensor    Creates a new satellite sensor file
newsite    Setup the current antenna site location
nextstart    Increments TDF dataset start arrays for selected dimensions
nhood    Neighborhood arithmetic for 1-D and 2-D variables
nitpix    Calculates sea surface temperature from AVHRR data
nitpix_overview    Overview of the sea surface temperature computation
nmcgdas2tdf    Converts NMC GDAS GRIB files to TeraScan format
nmea_monitor    Monitors the NMEA data messages sent by external equipment and stores the messages in shared memory
northup    Re-orient dataset so north is up, east is right

O
ocean_color Ocean color retrieval
ocm_chlor Computes the chlorophyll concentration from MODIS ocean color data
ocm_color OCM ocean color retrieval
ocm_tsm Computes the total suspended matter product from OCM data
ocm Overview of Oceansat-1 OCM data processing
ocmcal Performs radiometric calibration on uncalibrated OCM data
ocmin Creates OCM datasets from Oceansat-1 OCM telemetry
ogpreplay OGP delayed mode SeaWiFS decryption
oldelems    Generate warning in case of old orbital elements
ols    Overview of OLS data processing
orbdata    Satellite orbital elements in ASCII and dataset format
orbit    Create an orbital swath metafile
orbitfiles    Orbit background files used by xcapcon
outliers    Detect and optionally fix outliers
outpstr    User output functions

P
packcat    List, restore, or physically remove pass catalog records marked as deleted
packimcat    Eliminate unused space in a processed image catalog
palettes    Palettes for TeraScan xvu display function
partcount    Partition variables into bins
pass_blocking    Pass telemetry information
passcover    Determines pass parameters necessary to cover a specified region
passdata    Formats of raw pass data on pass disk or archive tape
passinfo    Returns info about most recent or other online pass
passmon    Monitor pass reception
passtime    Displays time and frame header data of a pass from the pass disk
pcap    Reports points of closest approach for selected satellite passes
pcontour    Creates a pressure contour with high/low symbols
pdio    TeraScan pass disk access functions
peekauto    Displays future auto-scheduled passes
pgs_express    Invokes custom scripts to generate and distribute products
pgs_modis cloud    Generates cloud mask, cloud top properties, and cloud profiles from calibrated direct broadcast MODIS data
pgs_modis_fire    Implements the NASA fire detection algorithm to detect actively burning fires from calibrated direct broadcast MODIS data
plot_bvhist    Plots bivariate histograms
plot_hist    Plots univariate histograms
plot_series    Plot variable's values
plot_skew    Plots log-P skew-T diagram for temperature and pressure data
plot_xy    Plot one variable against another variable
polyfit    Computes best-fit polynomial between two variables
post    Creates a metafile of markers and labels from a points dataset
postprocd    Run capture post processes whenever a new pass starts
preing    Decommutates HIRS and MSU data from TIP data
printout    Hardcopy parameter function
printvar    Print variable data
prmint    Numeric parameter functions
prmstr    String-valued parameters
prmyn    Special parameter functions
prog_framer    Programmable framing solution
ptangle    Report angles needed to point antenna at geostationary satellite

Q

R
randata    Creates one or two-dimensional dataset with random values
rdframe    Frames satellite telemetry bit stream
rdsin    Creates OLS, SSM/I, SSM/T1, SSM/T2, SSJ4, DMDM, and EST datasets from DMSP RDS/SDS telemetry
readfloat    Reads TDF variables and converts to floating point data
readsem    Extracts SEM data from raw TIP data
readsx Ingests X-band satellite telemetry bit stream in raw bits
readt1dmat    Converts an ASCII formatted SSM/T1 D-matrix to dataset format
reclassify    Image feature classification procedure
recv_pass    Receives file or pass data via a TCP/IP port
ref   Computes the water column turbidity index, reflectance, ratio of reflectance, and NDVI using the 2 calibrated visible channels of NOAA-AVHRR
refy2   Computes the water column turbidity index, NDVI, reflectance, and aerosol optical thickness from calibrated FY1-C data
region    Generate TeraScan latitude and longitude variables defining polygons surrounding data meeting various criteria
regress    Computes linear relationships between variables
regtopo    Registers 1 km resolution topography to a given master
report    Report-generation functions
resched    Regenerate list of scheduled passes for current period
reserve    Lock resource (file or device) for exclusive access
resetorb    Resets/updates the orbital elements in a dataset
rgbscale    24-bit true color image scaling and export
rmpass    Remove pass entries from the online catalog
ronmaster    Generates an optimum master file for an input dataset
rtdin    Creates OLS, SSM/I, SSM/T1, SSM/T2, SSJ4 and DMDM datasets from DMSP RTD telemetry
runpp    Example product versus destination post processing script
rxcircle    Creates metafile showing receiver coverage circle for any given satellite, receiver location, and minimum receiver elevation
rxcom    Diagnostic command for HR series receivers
rxcheck    Receiver diagnostic command

S
samplam    Samples and laminates variables in multiple datasets
sample    Samples a dataset using a list of points and method of sampling
sar_master    Generates a master file for an input SAR dataset
saver    A postprocessing script for use only by manufacturers
satmaster    Creates master file matching a satellite sensor
satvis    Calculates cloud parameters from AVHRR data
schedlog    Status file written to by the scheduling, tracking, capturing and autoarchiving functions
schedproc    Change the autoarchive or postprocessing parameters for a scheduled pass
schedrule    Activate or deactivate user specified autosched records
scrub    Removes old or unused files as part of post-processing
sdfin    Creates OLS datasets from DMSP SDF telemetry
seacloudmask    Computes daytime ocean cloud mask from visible, IR channels using Rayley scattering model algorithms
seawifs Overview of SeaWiFS data processing
seawifscal    Performs radiometric calibration on uncalibrated SeaWiFS data
seawifsin    Creates SeaWiFS datasets from SeaWiFS telemetry or archived LAC/GAC data
send_pass    Sends file or pass data via a TCP/IP port
session    Report session log contents
setaffine    Shifts earth location by specified line and sample offsets
setattr    Adds or changes an attribute in a dataset
setname    Set name of a dataset based on attributes
setqdc Programs down converter (X-band)
setval    Sets the value of one or more variables at a given dataset location
shipheading    Sets the initial orientation of the antenna
SHMEM_ACC    Antenna and framing control shared memory
SHMEM_NMEA   NMEA data shared memory
sigsetup    Signal handling routines
sitelist    Site list for use by teracapcon and xcapcon
sitelocation    Antenna site location topics
smath    Shell scripting tool that allows shell scripts to do real valued arithmetic
smear    Moving average for 1-D and 2-D variable data
smoothols    Smooth OLS fine channel data
sortstats    Computes statistics across records with same sort key
spect    Computes forward and inverse spectra with respect to a specified dimension
spect2d    Computes forward and inverse spectra of 2-D data
spectral    Overview of spectral analysis functions
spot_master    Generates a master file for an input SPOT dataset
spotin    Creates TeraScan datasets from the SPOT, Landsat MSS, and others
spriegu    Converts raw DCS sensor data into engineering units for ARGOS platforms for SPRI
ssmi    Overview of DMSP special sensors
stacker    Bourne Shell script to manipulate ADIC DAT Autochanger
statpass    Non-X-windows capture status monitor
stats    Print statistical data for dataset variables
statstuff    Statistical functions for TDF datasets
stowship    Positions an antenna to ready it for shipping
streamplot    Creates a streamplot metafile from a vector field image
stv Satellite TV - Graphical utility for displaying raw data images
subsamp    Creates datasets with subsampled variables
subset    Creates variable and/or dimension subsets
sunalign    Antenna alignment by tracking the sun
sunclock    Determines the correct time of day and updates the system clock
sunelev    Computes sun elevation based on time and location
sunraster    Old function to convert Xvu Window to Sunraster format
svd   Computes modes of covariability between two variables
swcolflag    Script for extracting bit fields from SeaWiFS ocean color datasets
swcolor    SeaWiFS ocean color retrieval
swlevel0    SeaWiFS level 0 archive
systemclock    Terascan use of UNIX system clock
system.config    TeraScan system configuration data

T
t1edr    Derives temperature, height and wind profiles from SSM/T1 datasets
t2edr    Derives humidity, dew point and water vapor profiles from SSM/T datasets
targetsub    Creates variable and/or dimension subsets
tdffort    Limited Fortran interface to TDF dataset functions
tdftohdf    Export Terascan datasets to HDF/netCDF format
terascan    TeraScan directories and environment
terrno    TeraScan global error code
testcover    Test percent master area coverage
testim    Creates a 2-D test image pattern
timediff    Computes time difference between files
timemerge Merges unregistered datasets by time
tipin    Creates TOVS datasets from HRPT telemetry data
tipin1b    Creates TOVS 1B datasets from HRPT telemetry data
topomask    Computes topography-dependent surface temperatures and optional cloud mask, using IR channel and geopotential profiles
toving    Ingests, calibrates, and earth-locates Level 1B data from disk
tovpre    Performs limb-corrections and transforms calibrated and earth-located HIRS/MSU data produced by INGTOV into data sets
tovret    Uses a physical retrieval model to obtain vertical atmospheric profiles
tovs    Overview of TOVS data processing
tovscdf    Converts TOVS output files into TeraScan datasets
tovsfile    A list of files that are absolutely necessary to run the TOVS package. Do not modify or delete them.
tovsproc    Script to calculate atmospheric profiles from TOVS data in HRPT
tovswind    Produces a TeraScan metafile dataset of wind vectors from TOVS wind speed and direction data
tovtap    Reads Level 1B HIRS and MSU data from tape
trackeye    Monitors the antenna tracking and framing of pass data in real time
trackmon Tracking Monitor - Graphical utility that monitors the antenna tracking and framing of pass data
tracks    Produces a metafile dataset of location and value of 1 dimensional data
tracksat Satellite Tracker - Graphical utility for real-time satellite tracking
tsargs    Process TeraScan style argument lists in C-shell scripts
tscaninfo    System information script
tscan.login    Sets up TeraScan user, pass, and antenna environments
tscan.rc.local    Startup TeraScan capture, GPS, and UPS daemons
tsched    Scheduler daemon started at boot time
tsdate    Write date difference or converted date to UNIX stdout
tsdiff    Compute difference in variables between two TeraScan datasets
tssort    Sorts terascan dataset variables
typestuff    TDF data type functions

U
uif    TeraScan non-display user interface
ungrid    Converts gridded data with computed earth location to point data
unitable    TeraScan units definition and conversion table
ups    Sends diagnostic commands to the UPS.
ups_monitor    Monitors the Uninterruptable Power Supply (UPS) for low battery conditions during a power failure
usevars    TDF variable utility functions

V
varinfo    Returns information about a variable's attributes
varname    Renames a variable in TeraScan datasets
varnames    List variables in a dataset
vascal    Converts VAS sensor counts to calibrated data - radiance or temperature
vasin    Ingests raw GOES S-VAS telemetry data into TeraScan TDF datasets
vectors    Creates a metafile of vectors, markers, and labels from a vectors dataset

W
waitd    Wait for incoming data then process it
waitpass    Wait for capture of incoming pass to complete
waka_proc    Script for generating image and faxable image composites for AVHRR derived sea surface temperature data
water_clarity    Generates Secchi disk depth estimates and improved K490 (diffuse attenuation coefficient at 490 nanometers) from ocean color data
weather    Creates a TeraScan metafile containing weather symbols. The metafile can be overlaid on an image.
wedge    Creates an annotated color wedge metafile
wefaxin    Ingests WEFAX data
whatisit    List record sizes and counts for tape files
whereami    Determines the current antenna site location
wheresat    Reports the satellite position, subpoint, elevation, azimuth, and velocity for a specified time
wildcard2    Wildcard expansion functions
winret    Determines the geostrophic wind for 'good' soundings

X
xcapcon    X windows based capture control function
xcoast    Writes coast/border metafile variables
xcorrel    Computes lagged correlations or covariances
xinject    Renders metafiles, injecting them into image variables
xspect    Computes coherence, cross, and phase spectra
xvu   Image display under X Windows

Z
zaptsched    Sends a signal to tsched or gvarsched or demsched
zipvars    Compress datasets by compressing selected variable data only

Last Update: $Date: 2003/03/28 00:38:58 $