| 3c: | Launch a Matlab GUI for manipulating 3-component data. |
|---|
| abbrev: | Abbrevations for SAC Commands |
|---|
| about: | Displays version and copywrite information. |
|---|
| absolutevalue: | 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. |
|---|
| arraymap: | Produces a map of the array or "coarray" using all files
in SAC memory. |
|---|
| axes: | Controls the location of annotated axes. |
|---|
| bandpass: | Applies an IIR bandpass filter. |
|---|
| bandrej: | Applies an IIR bandreject filter. |
|---|
| bbfk: | Computes the broadband frequency-wavenumber (FK) spectral
estimate, using allfiles in SAC memory. |
|---|
| beam: | Computes the beam using all data files in SAC memory. |
|---|
| begindevices: | Begins plotting to one or two of the two possible
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. |
|---|
| cd: | Change the working directory within SAC. |
|---|
| 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. |
|---|
| commit: | Commits (dopies) SAC data to the I/O buffers |
|---|
| contour: | Produces contour plots of data in memory. |
|---|
| convert: | Converts data files from one format to another. |
|---|
| convolve: | Compute the convolution of a master signal with itself
and one or more other signals. |
|---|
| copyhdr: | Copies header variables from one file in memory to all others. |
|---|
| correlate: | Computes the auto- and cross- correlation functions. |
|---|
| crr: | Commit, Rollback, Recalltrace |
|---|
| cut: | Defines how much of a data file is to be read. |
|---|
| cuterr: | Controls errors due to bad cut parameters. |
|---|
| cutim: | Cuts files in memory. Can cut multiple segments from
each file. |
|---|
| data: | Search for, build requests, and download data |
|---|
| datagen: | Generates sample data files and stores them in memory. |
|---|
| decimate: | Decimates (downsamples) data, including an optional
anti-aliasing FIR filter. |
|---|
| deletechannel: | Deletes one or more files from the file list. |
|---|
| 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 input and output 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. |
|---|
| event: | Search for events by region, magnitude, and date |
|---|
| exp: | Computes the exponential of each data point. |
|---|
| exp10: | Computes the base 10 exponential (10.**y) of each data point. |
|---|
| fft: | Performs a discrete Fourier transform. |
|---|
| fileid: | Controls the file id display found on most SAC plots. |
|---|
| filenumber: | Controls the file number display found on most SAC plots. |
|---|
| filterdesign: | Produces a graphic display of a filter's digital vs. analog
characteristics |
|---|
| fir: | Applies a finite-impulse-response filter. |
|---|
| floor: | Puts a minimum value on logarithmically scaled data. |
|---|
| funcgen: | Generates a function and stores it in memory. |
|---|
| getbb: | Gets (prints) values of blackboard variables. |
|---|
| grayscale: | Produces 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: | Displays information about SAC commands and features on
the screen. |
|---|
| highpass: | Applies an IIR highpass filter. |
|---|
| hilbert: | Applies a Hilbert transform. |
|---|
| history: | prints a list of the recently issued SAC commands |
|---|
| ifft: | Performs an inverse discrete Fourier transform. |
|---|
| image: | Produces color sampled image plots of data in memory. |
|---|
| inicm: | Reinitializes all of SAC's common blocks. |
|---|
| installmacro: | Installs macro files in the global SAC macro directory. |
|---|
| int: | Performs integration using the trapezoidal or rectangular rule. |
|---|
| interpolate: | Interpolates evenly or unevenly spaced data to a new
sampling rate. |
|---|
| keepam: | Keep amplitude component of spectral files
(of either the AMPH or RLIMformat) in SAC memory. |
|---|
| khronhite: | Applies a Khronhite filter to the data. |
|---|
| line: | Controls the linestyle selection in plots. |
|---|
| linefit: | Computes the best straight line fit to the data in memory
and writesthe results to header blackboard variables. |
|---|
| 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. |
|---|
| load: | Load an external command. |
|---|
| loadctable: | Allows the user to select a new color table for use in
image plots. |
|---|
| 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. |
|---|
| map: | Generate a GMT (Generic Mapping Tools) map which can
include station/eventsymbols topography and station
names using all the files in SAC memory |
|---|
| markptp: | Measures and marks the maximum peak to peak amplitude of
each signal withinthe measurement time window. |
|---|
| marktimes: | Marks files with travel times from a velocity set. |
|---|
| markvalue: | Searches for and marks values in a data file. |
|---|
| mat: | Copy SAC workspace into Matlab and either execute a
user-specifiedm-file or else get a Matlab prompt for
interactive manipulation. |
|---|
| mathop: | provides options for sequncing in inline expressions |
|---|
| merge: | Merges (concantenates) a set of files to data in memory. |
|---|
| message: | Sends a message to the user's terminal. |
|---|
| metadata: | Insert station and event metadata |
|---|
| mtw: | Determines the measurement time window for use in
subsequent measurementcommands. |
|---|
| 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. |
|---|
| nplotc: | Annotates SAC plots and creates figures using cursor. |
|---|
| null: | Controls the plotting of null values. |
|---|
| oapf: | Opens a alphanumeric pick file. |
|---|
| ohpf: | Opens a HYPO formatted pick file. |
|---|
| pause: | Sends a message to the terminal and pauses. |
|---|
| pickauthor: | Tell sac to read author list (and possibly phase pick
information) froma user-defined preferences file, or
interactively enter author list on |
|---|
| pickphase: | Tell sac to read phase pick information (and possibly
the author list) froma user-defined preferences file, or
interactively enter phase pick information |
|---|
| pickprefs: | Control the way that SAC manages and or loadspicks from a
variety of input data formats (e.g., CSS, GSE, SUDS etc...) |
|---|
| 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. |
|---|
| plotalpha: | Reads alphanumeric data files on disk into memory and plots
the data to thecurrent output device. |
|---|
| plotc: | Annotates SAC plots and creates figures using cursor. |
|---|
| plotctable: | |
|---|
| plotdy: | Creates a plot with error bars. |
|---|
| plotpk: | Produces a plot for the picking of arrival times. |
|---|
| plotpktable: | |
|---|
| 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. |
|---|
| print: | Prints the most recent SGF file. |
|---|
| printhelp: | Prints hardcopies of information about SAC commands and
features. |
|---|
| 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. |
|---|
| readbbf: | Reads a blackboard variable file into memory. |
|---|
| readcss: | Read data files in CSS external format from disk into memory. |
|---|
| readdb: | Reads data from Oracle database into memory. NOT SUPPORTED |
|---|
| readerr: | Controls errors that occur during the READ command. |
|---|
| readgse: | Read data files in GSE 2.0 format from disk into memory. |
|---|
| readhdr: | Reads headers from SAC data files into memory. |
|---|
| readsdd: | Reads data from SDD data files on disk into memory. |
|---|
| readsp: | Reads spectral files written by WRITESP and WRITESPE. |
|---|
| readsuds: | Read data files in PC-SUDS format from disk into memory. |
|---|
| readtable: | Reads alphanumeric data files in collumn format on disk
into memory. |
|---|
| recalltrace: | rolls back the laste committed waveform and most header fields |
|---|
| report: | Informs the user about the current state of SAC. |
|---|
| response: | Download responses in sac-polezero or evalresp format |
|---|
| 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. |
|---|
| rollback: | reverts SAC to last committed version in I/O buffers |
|---|
| rotate: | Rotates a pair of data components through an angle. |
|---|
| rotinc: | Rotate a set of 3 perpendicular components. |
|---|
| rq: | Removes the seismic Q factor from spectral data. |
|---|
| rtrend: | Removes the linear trend. |
|---|
| saveimg: | Sves displayed graphics windows in several formats |
|---|
| scallop: | Calculate a spectrogram equal to the difference between
two smoothed versionsof the same spectrogram. |
|---|
| 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 (SGF) device options. |
|---|
| smooth: | Applies an arithmetic smoothing algorithm to the data. |
|---|
| sonogram: | Calculate a spectrogram equal to the difference between
two smoothed versionsof the same spectrogram. |
|---|
| sort: | Sorts files in memory by header fields. |
|---|
| spectrogram: | Calculate a spectrogram using all of the data in memory. |
|---|
| sqr: | Squares each data point. |
|---|
| sqrt: | Takes the square root of each data point. |
|---|
| station: | Search for station by region, identifier, channel, and date |
|---|
| 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. |
|---|
| 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 files. |
|---|
| transfer: | Performs deconvolution to remove an instrument response
and convolution to apply another instrument response. |
|---|
| transfertable: | Details on older instrument tpes called in transfer |
|---|
| traveltime: | Computes traveltime curves for pre-defined models |
|---|
| tsize: | Controls the text size attributes. |
|---|
| 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. |
|---|
| 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. |
|---|
| writecss: | Writes data in memory to disk in CSS 3.0 format. |
|---|
| 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. |
|---|