| 3c: | Launch a Matlab GUI for manipulating 3-component data. |
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| about: | Displays version and copywrite information. |
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| absolutevalue: | Takes the absolute value of each data point. |
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| add: | Adds a constant to each data point. |
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| addf: | Adds a set of data files to data in memory. |
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| apk: | Applies an automatic event picking algorithm. |
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| arraymap: | Produces a map of the array or "coarray" using all files
in SAC memory. |
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| axes: | Controls the location of annotated axes. |
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| bandpass: | Applies an IIR bandpass filter. |
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| bandrej: | Applies an IIR bandreject filter. |
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| bbfk: | Computes the broadband frequency-wavenumber (FK) spectral
estimate, using allfiles in SAC memory. |
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| beam: | Computes the beam using all data files in SAC memory. |
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| begindevices: | Begins plotting to one or two of the two possible
graphics devices. |
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| beginframe: | Turns off automatic new frame actions between plots. |
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| beginwindow: | Begins plotting to a new graphics window. |
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| benioff: | Applies a Benioff filter to the data. |
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| binoperr: | Controls errors that can occur during binary file operations. |
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| border: | Controls the plotting of a border around plots. |
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| capf: | Closes the currently open alphanumeric pick file. |
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| chnhdr: | Changes the values of selected header fields. |
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| commit: | Commits (dopies) SAC data to the I/O buffers |
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| chpf: | Closes the currently open HYPO pick file. |
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| color: | Controls color selection for color graphics devices. |
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| comcor: | Controls SAC's command correction option. |
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| contour: | Produces contour plots of data in memory. |
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| convert: | Converts data files from one format to another. |
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| convolve: | Compute the convolution of a master signal with itself
and one or more other signals. |
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| copyhdr: | Copies header variables from one file in memory to all others. |
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| correlate: | Computes the auto- and cross- correlation functions. |
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| crr: | Commit, Rollback, Recalltrace |
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| cut: | Defines how much of a data file is to be read. |
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| cuterr: | Controls errors due to bad cut parameters. |
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| cutim: | Cuts files in memory. Can cut multiple segments from
each file. |
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| datagen: | Generates sample data files and stores them in memory. |
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| decimate: | Decimates (downsamples) data, including an optional
anti-aliasing FIR filter. |
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| deletechannel: | Deletes one or more files from the file list. |
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| depmec: | Launch a Matlab GUI for estimating source depth and mechanism. |
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| dif: | Differentiates data in memory. |
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| div: | Divides each data point by a constant. |
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| divf: | Divides data in memory by a set of data files. |
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| divomega: | Performs integration in the frequency domain. |
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| echo: | Controls echoing of input and output to the terminal. |
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| enddevices: | Terminates one or more graphics devices. |
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| endframe: | Resumes automatic new frame actions between plots. |
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| envelope: | Computes the envelope function using a Hilbert transform. |
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| erase: | Erases the graphics display area. |
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| evaluate: | Evaluates simple arithmetic expressions. |
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| exp: | Computes the exponential of each data point. |
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| exp10: | Computes the base 10 exponential (10.**y) of each data point. |
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| fft: | Performs a discrete Fourier transform. |
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| fileid: | Controls the file id display found on most SAC plots. |
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| filenumber: | Controls the file number display found on most SAC plots. |
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| filterdesign: | Produces a graphic display of a filter's digital vs. analog
characteristics |
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| fir: | Applies a finite-impulse-response filter. |
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| floor: | Puts a minimum value on logarithmically scaled data. |
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| funcgen: | Generates a function and stores it in memory. |
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| getbb: | Gets (prints) values of blackboard variables. |
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| grayscale: | Produces grayscale images of data in memory. |
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| grid: | Controls the plotting of grid lines in plots. |
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| gtext: | Controls the quality and font of text used in plots. |
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| hanning: | Applies a "hanning" window to each data file. |
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| help: | Displays information about SAC commands and features on
the screen. |
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| highpass: | Applies an IIR highpass filter. |
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| hilbert: | Applies a Hilbert transform. |
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| history: | prints a list of the recently issued SAC commands |
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| ifft: | Performs an inverse discrete Fourier transform. |
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| image: | Produces color sampled image plots of data in memory. |
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| inicm: | Reinitializes all of SAC's common blocks. |
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| installmacro: | Installs macro files in the global SAC macro directory. |
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| int: | Performs integration using the trapezoidal or rectangular rule. |
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| interpolate: | Interpolates evenly or unevenly spaced data to a new
sampling rate. |
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| keepam: | Keep amplitude component of spectral files
(of either the AMPH or RLIMformat) in SAC memory. |
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| khronhite: | Applies a Khronhite filter to the data. |
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| line: | Controls the linestyle selection in plots. |
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| linefit: | Computes the best straight line fit to the data in memory
and writesthe results to header blackboard variables. |
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| linlin: | Turns on linear scaling for the x and y axes. |
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| linlog: | Turns on linear scaling for x axis and logarithmic for y axis. |
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| listhdr: | Lists the values of selected header fields. |
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| load: | Load an external command. |
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| loadctable: | Allows the user to select a new color table for use in
image plots. |
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| log: | Takes the natural logarithm of each data point. |
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| log10: | Takes the base 10 logarithm of each data point. |
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| loglab: | Controls labels on logarithmically scaled axes. |
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| loglin: | Turns on logarithmic scaling for x axis and linear for y axis. |
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| loglog: | Turns on logarithmic scaling for the x and y axes. |
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| lowpass: | Applies an IIR lowpass filter. |
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| macro: | Executes a SAC macro file. |
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| map: | Generate a GMT (Generic Mapping Tools) map which can
include station/eventsymbols topography and station
names using all the files in SAC memory |
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| markptp: | Measures and marks the maximum peak to peak amplitude of
each signal withinthe measurement time window. |
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| marktimes: | Marks files with travel times from a velocity set. |
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| markvalue: | Searches for and marks values in a data file. |
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| mat: | Copy SAC workspace into Matlab and either execute a
user-specifiedm-file or else get a Matlab prompt for
interactive manipulation. |
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| merge: | Merges (concantenates) a set of files to data in memory. |
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| message: | Sends a message to the user's terminal. |
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| mtw: | Determines the measurement time window for use in
subsequent measurementcommands. |
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| mul: | Multiplies each data point by a constant. |
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| mulf: | Multiplies a set of files by the data in memory. |
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| mulomega: | Performs differentiation in the frequency domain. |
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| news: | Prints current news concerning SAC. |
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| nplotc: | Annotates SAC plots and creates figures using cursor. |
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| null: | Controls the plotting of null values. |
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| oapf: | Opens a alphanumeric pick file. |
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| ohpf: | Opens a HYPO formatted pick file. |
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| pause: | Sends a message to the terminal and pauses. |
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| pickauthor: | Tell sac to read author list (and possibly phase pick
information) froma user-defined preferences file, or
interactively enter author list on |
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| pickphase: | Tell sac to read phase pick information (and possibly
the author list) froma user-defined preferences file, or
interactively enter phase pick information |
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| pickprefs: | Control the way that SAC manages and or loadspicks from a
variety of input data formats (e.g., CSS, GSE, SUDS etc...) |
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| picks: | Controls the display of time picks on most SAC plots. |
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| plabel: | Defines general plot labels and their attributes. |
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| plot: | Generates a single-trace single-window plot. |
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| plot1: | Generates a multi-trace multi-window plot. |
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| plot2: | Generates a multi-trace single-window (overlay) plot. |
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| plotalpha: | Reads alphanumeric data files on disk into memory and plots
the data to thecurrent output device. |
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| plotc: | Annotates SAC plots and creates figures using cursor. |
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| plotctable: | |
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| plotdy: | Creates a plot with error bars. |
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| plotpk: | Produces a plot for the picking of arrival times. |
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| plotpktable: | |
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| plotpm: | Generates a "particle-motion" plot of pairs of data files. |
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| plotsp: | Plots spectral data in several different formats. |
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| plotxy: | Plots one or more data files versus another data file. |
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| print: | Prints the most recent SGF file. |
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| printhelp: | Prints hardcopies of information about SAC commands and
features. |
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| production: | Controls the production mode option. |
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| qdp: | Controls the "quick and dirty plot" option. |
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| quantize: | Converts continuous data into its quantized equivalent. |
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| quit: | Terminates SAC. |
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| quitsub: | Terminates the currently active subprocess. |
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| read: | Reads data from SAC data files on disk into memory. |
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| readbbf: | Reads a blackboard variable file into memory. |
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| readcss: | Read data files in CSS external format from disk into memory. |
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| readdb: | Reads data from Oracle database into memory. NOT SUPPORTED |
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| readerr: | Controls errors that occur during the READ command. |
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| readgse: | Read data files in GSE 2.0 format from disk into memory. |
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| readhdr: | Reads headers from SAC data files into memory. |
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| readsdd: | Reads data from SDD data files on disk into memory. |
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| readsp: | Reads spectral files written by WRITESP and WRITESPE. |
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| readsuds: | Read data files in PC-SUDS format from disk into memory. |
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| readtable: | Reads alphanumeric data files in collumn format on disk
into memory. |
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| recalltrace: | rolls back the laste committed waveform and most header fields |
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| report: | Informs the user about the current state of SAC. |
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| reverse: | Reverse the order of data points. |
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| rglitches: | Removes glitches and timing marks. |
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| rmean: | Removes the mean. |
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| rms: | Computes the root mean square of the data within the
measurement time window. |
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| rollback: | reverts SAC to last committed version in I/O buffers |
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| rotate: | Rotates a pair of data components through an angle. |
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| rq: | Removes the seismic Q factor from spectral data. |
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| rtrend: | Removes the linear trend. |
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| saveimg: | Sves displayed graphics windows in several formats |
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| scallop: | Calculate a spectrogram equal to the difference between
two smoothed versionsof the same spectrogram. |
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| setbb: | Sets (defines) values of blackboard variables. |
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| setdevice: | Defines a default graphics device to use in subsequent plots. |
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| setmacro: | Defines a set of directories to search when executing a
SAC macro file. |
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| sgf: | Controls the SAC Graphics File (SGF) device options. |
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| smooth: | Applies an arithmetic smoothing algorithm to the data. |
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| sonogram: | Calculate a spectrogram equal to the difference between
two smoothed versionsof the same spectrogram. |
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| sort: | Sorts files in memory by header fields. |
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| spe: | |
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| spectrogram: | Calculate a spectrogram using all of the data in memory. |
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| sqr: | Squares each data point. |
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| sqrt: | Takes the square root of each data point. |
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| sss: | |
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| stretch: | Stretches (upsamples) data, including an optional
interpolating FIR filter. |
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| sub: | Subtracts a constant from each data point. |
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| subf: | Subtracts a set of data files from data in memory. |
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| symbol: | Controls the symbol plotting attributes. |
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| synchronize: | Synchronizes the reference times of all files in memory. |
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| syntax: | Prints basic information about SAC commands. |
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| systemcommand: | Executes system commands from SAC. |
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| taper: | Applies a symmetric taper to each end of data. |
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| ticks: | Controls the location of tick marks on plots. |
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| title: | Defines the plot title and attributes. |
|---|
| trace: | Controls the tracing of blackboard and header variables. |
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| transcript: | Controls output to the transcript files. |
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| transfer: | Performs deconvolution to remove an instrument response
and convolution to apply another instrument response. |
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| transfertable: | Details on older instrument tpes called in transfer |
|---|
| traveltime: | Computes traveltime curves for pre-defined models |
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| tsize: | Controls the text size attributes. |
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| unsetbb: | Unsets (deletes) blackboard variables. |
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| unwrap: | Computes amplitude and unwrapped phase. |
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| vspace: | Changes the maximum size and shape of plots. |
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| wait: | Tells SAC whether or not to pause between plots. |
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| whiten: | Flattens the spectrum of the input time series. |
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| whpf: | Writes auxiliary cards into the HYPO pick file. |
|---|
| width: | Controls line-width selection for graphics devices. |
|---|
| wiener: | Designs and 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. |
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| writecss: | Writes data in memory to disk in CSS 3.0 format. |
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| writegse: | Write data files in GSE 2.0 format from memory to disk. |
|---|
| writehdr: | Overwrites the headers on disk with those in memory. |
|---|
| writesdd: | Writes data in memory to disk in SDD format. |
|---|
| 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 contour level
values. |
|---|
| 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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