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SAC Commands Listing: Alphabetical  

2012-11-21 16:57:38|  分类: 程序 |  标签: |举报 |字号 订阅

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CommandDefinition
3C
Launches a Matlab GUI for manipulating 3-component data.
ABOUTLists current version of SAC
ABS
Takes the absolute value of each data point.
ADD
Adds a constant to each data point.
ADDF
Adds a set of data files to data in memory.
APK
Applies an automatic event picking algorithm.
ARRAYMAPPlots the Co-array of an array
AXES
Controls the location of annotated axes.
BANDPASS
Applies an IIR bandpass filter.
BANDREJ
Applies an IIR bandreject filter.
BBFKComputes broadband FK spectra from array data
BEAMComputes beamform of array data
BEGINDEVICES 
Begins plotting to one or more graphics devices.
BEGINFRAME
Turns off automatic new frame actions between plots.
BEGINWINDOW
Begins plotting to a new graphics window.
BENIOFF
Applies a Benioff filter to the data.
BINOPERR
Controls errors that can occur during binary file operations.
BORDER
Controls the plotting of a border around plots.
CAPF
Closes the currently open alphanumeric pick file.
CHNHDR
Changes the values of selected header fields.
CHPF
Closes the currently open HYPO pick file.
COLOR
Controls color selection for color graphics devices.
COMCOR
Controls SAC's command correction option.
CONTOUR
Produces contour plots of data in memory.
CONVERT
Converts data files from one format to another.
CONVOLVEConvolves first signal with remainder of signals in stack
COPYHDR
Copies header variables from one file in memory to all others.
CORRELATE
Computes the auto- and cross- correlation functions.
COMMITCommits current data in memory to I/O buffer, prior processing can't be undone without rereading the data.
CUT
Defines how much of a data file is to be read.
CUTERR
Controls errors due to bad cut parameters.
CUTIM
Cuts data in memory
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DATAGEN 
Generates sample data files and stores them in memory.
DECIMATE 
Decimates (downsamples) data, including an optional anti-aliasing FIR filter.
DELETECHANNELDeletes selected channels from memory
DIF
Differentiates data in memory.
DIV 
Divides each data point by a constant.
DIVF 
Divides data in memory by a set of data files.
DIVOMEGA 
Performs integration in the frequency domain.
ECHO 
Controls echoing of commands to the terminal.
ENDDEVICES 
Terminates one or more graphics devices.
ENDFRAME 
Resumes automatic new frame actions between plots.
ENVELOPE 
Computes the envelope function using a Hilbert transform.
ERASE 
Erases the graphics display area.
EVALUATE 
Evaluates simple arithmetic expressions.
EXP 
Computes the exponential of each data point.
EXP10 
Computes the base 10 exponential (10.**y) of each data point.
FAQAnswers to frequently asked questions
FFT 
Performs a discrete Fourier transform.
FILEID 
Controls the file id display found on most SAC plots.
FILENUMBERControls display of filenumbers on plots
FILTERDESIGNA tool for selecting and designing filters
FIR 
Applies a finite-impulse-response filter.
FLOOR 
Puts a minimum value on logarithmically interpolated data.
FUNCGEN 
Generates a function and stores it in memory.
GETBB 
Gets (prints) values of blackboard variables.
GMAPA simple interface to the GMT mapping tool (see Map and GMTMAP)
GRAYSCALEProduces grayscale images of data in memory
GRID 
Controls the plotting of grid lines in plots.
GTEXT 
Controls the quality and font of text used in plots.
HANNING 
Applies a "hanning" window to each data file.
HELP 
Prints information about SAC commands and features.
HIGHPASS 
Applies an IIR highpass filter.
HILBERT 
Applies a Hilbert transform.
HISTORY

Lists and allows user to repeat previous commands

HLPINTRO

Introduction from the help package in SAC

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IFFT 
Performs an inverse discrete Fourier transform.
IMAGEPlots SAC XYZ files as images
INICM 
Reinitializes all of SAC's common blocks.
INSTALLMACRO 
Installs macro files in the global SAC macro directory.
INT 
Performs integration using the trapezoidal rule.
INTERPOLATE 
Interpolates evenly or unevenly spaced data to a new sampling rate.
INTROA brief introduction to SAC
KHRONHITE 
Applies a Khronhite filter to the data.
KEEPAMDrops the phase information from spectral files in memory
LINE 
Controls the linestyle selection in plots.
LINEFITCompute the best fitting line to a set of data
LINLIN 
Turns on linear scaling for the x and y axes.
LINLOG 
Turns on linear scaling for x axis and logarithmic for y axis.
LISTHDR
Lists the values of selected header fields.
LOADLoad a user defined external function
LOADCTABLELoads a new color table for making images
LOG 
Takes the natural logarithm of each data point.
LOG10 
Takes the base 10 logarithm of each data point.
LOGLAB 
Controls labels on logarithmically scaled axes.
LOGLIN 
Turns on logarithmic scaling for x axis and linear for y axis.
LOGLOG 
Turns on logarithmic scaling for the x and y axes.
LOWPASS 
Applies an IIR lowpass filter.
MACRO 
Executes a SAC macro file.
MAPInterface to GMT for making maps of station and event locations
MARKPTP 
Measures and marks the maximum peak to peak amplitude of each signal within the measurement time window.
MARKTIMES 
Marks files with travel times from a velocity set.
MARKVALUE 
Searches for and marks values in a data file.
MAT
Allows the user to use MATLAB commands from within SAC
MERGE 
Merges (concantenates) a set of files to data in memory.
MESSAGE 
Sends a message to the user's terminal.
MTW 
Determines the measurement time window for use in subsequent measurement commands.
MUL 
Multiplies each data point by a constant.
MULF 
Multiplies a set of files by the data in memory.
MULOMEGA 
Performs differentiation in the frequency domain.
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CommandDefinition
NEWS 
Prints current news concerning SAC.
OAPF 
Opens a alphanumeric pick file.
OHPF 
Opens a HYPO formatted pick file.
PAUSE 
Sends a message to the terminal and pauses.
PICKS 
Controls the display of time picks on most SAC plots.
PLABEL 
Defines general plot labels and their attributes.
PLOT 
Generates a single-trace single-window plot.
PLOT1 
Generates a multi-trace multi-window plot.
PLOT2
Generates a multi-trace single-window (overlay) plot.
PLOTC
Annotates SAC plots and creates figures using cursor.
PLOTPK 
Produces a plot for the picking of arrival times.
PLOTPM 
Generates a "particle-motion" plot of pairs of data files.
PLOTSP
Plots spectral data in several different formats.
PLOTXY
Plots one or more data files versus another data file.
PRODUCTION 
Controls the production mode option.
QDP
Controls the "quick and dirty plot" option.
QUANTIZE 
Converts continuous data into its quantized equivalent.
QUIT 
Terminates SAC.
QUITSUB
Terminates the currently active subprocess.
READ 
Reads data from SAC data files on disk into memory.
READALPHA 
Reads alphanumeric data files on disk into memory.
READBBF
Reads a blackboard variable file into memory.
READERR 
Controls errors that occur during the @read@ command.
READHDR
Reads headers from SAC data files into memory.
READSP
Reads spectral files written by @writesp@.
REPORT
Informs the user about the current state of SAC.
REVERSE
Reverse the order of data points.
RGLITCHES
Removes glitches and timing marks.
RMEAN
Removes the mean.
RMS
Computes the root mean square of the data within the measurement time window.
ROTATE 
Rotates a pair of data components through an angle.
RQ
Removes the seismic Q factor from spectral data.
RTREND 
Removes the linear trend.
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SETBB 
Sets (defines) values of blackboard variables.
SETDEVICE 
Defines a default graphics device to use in subsequent plots.
SETMACRO 
Defines a set of directories to search when executing a SAC macro file.
SGF 
Controls the SAC Graphics File device options.
SMOOTH 
Applies an arithmetic smoothing algorithm to the data.
SORT 
Sorts waveforms based on selected header variables.
SPE
Initializes the Spectral Estimation Subprocess. SPE Commands
SPECTROGRAM 
Calculates a spectrogram using all of the data in memory.
SQR
Squares each data point.
SQRT 
Takes the square root of each data point.
SSS 
Initializes the Signal Stacking Subprocess. SSS Commands
STRETCH 
Stretches (upsamples) data, including an optional interpolating FIR filter.
SUB
Subtracts a constant from each data point.
SUBF 
Subtracts a set of data files from data in memory.
SYMBOL 
Controls the symbol plotting attributes.
SYNCHRONIZE 
Synchronizes the reference times of all files in memory.
SYNTAX 
Prints basic information about SAC commands.
SYSTEMCOMMAND
Executes system commands from SAC.
TAPER 
Applies a symmetric taper to each end of data.
TICKS 
Controls the location of tick marks on plots.
TITLE 
Defines the plot title and attributes.
TRACE
Controls the tracing of blackboard and header variables.
TRANSCRIPT
Controls output to the transcript file.
TRANSFER
Performs deconvolution to remove an instrument response and convolution to apply another instrument response.
TSIZE
Controls the text size attributes.
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UNSETBB
Unsets (deletes) blackboard variables.
UNWRAP
Computes amplitude and unwrapped phase.
VSPACE 
Changes the maximum size and shape of plots.
WAIT 
Tells SAC whether or not to pause between plots.
WHITEN
Flattens the spectrum of the input time series.
WHPF
Writes auxiliary cards into the @hypo@ pick file.
WIENER
Applies an adaptive Wiener filter.
WILD
Sets wildcard characters used in read commands to expand filelists.
WINDOW 
Sets the location and shape of graphics windows.
WRITE
Writes data in memory to disk.
WRITEBBF 
Writes a blackboard variable file to disk.
WRITEHDR
Overwrites the headers on disk with those in memory.
WRITESP
Writes spectral files to disk as "normal" data files.
XDIV
Controls the x axis division spacing.
XFUDGE
Changes the x axis "fudge factor."
XFULL
Controls plotting of x axis full logarithmic decades.
XGRID
Controls plotting of grid lines in the x direction.
XLABEL 
Defines the x axis label and attributes.
XLIM
Determines the plot limits for the x axis.
XLIN 
Turns on linear scaling for the x axis.
XLOG
Turns on logarithimic scaling for the x axis.
XVPORT
Defines the viewport for the x axis.
YDIV
Controls the y axis division spacing.
YFUDGE
Changes the y axis "fudge factor."
YFULL 
Controls plotting of y axis full logarithmic decades.
YGRID 
Controls plotting of grid lines in the y direction.
YLABEL 
Defines the y axis label and attributes.
YLIM 
Determines the plot limits for the y axis.
YLIN
Turns on linear scaling for the y axis.
YLOG
Turns on logarithimic scaling for the y axis.
YVPORT
Defines the viewport for the y axis.
ZCOLORS 
Controls the color display of contour lines.
ZLABELS
Controls the labeling of contour lines with alphanumeric labels.
ZLEVELS
Controls the contour line spacing in subsequent contour plots.
ZLINES
Controls the contour linestyles in subsequent contour plots.
ZTICKS
Controls the labeling of contour lines with directional tick marks.
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