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| 2 | Quick Guide to SH (Workshop on Moment Tensor Inversion 2000) |
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| 3 | ============================================================ |
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| 4 | |
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| 5 | |
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| 6 | General Remarks |
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| 7 | --------------- |
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| 8 | |
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| 9 | - command line interpreter is not case-sensitive |
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| 10 | - command line consists of command-verb, parameters and qualifiers |
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| 11 | - separation characters are blanks " " or semicolons ";" |
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| 12 | - qualifiers are preceded by a slash. |
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| 13 | - delete scratch files in directory shscratch from time to time |
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| 14 | |
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| 15 | |
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| 16 | Some Commands |
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| 17 | ------------- |
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| 18 | |
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| 19 | |
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| 20 | - start SH |
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| 21 | SH |
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| 22 | |
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| 23 | - open graphics window |
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| 24 | XOPEN;; on X-Window system |
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| 25 | |
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| 26 | - exiting from SH |
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| 27 | QUIT |
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| 28 | |
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| 29 | - help *** BUG on Linux installation *** |
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| 30 | HELP directory of (almost all) available commands |
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| 31 | HELP HELP explanation of HELP command |
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| 32 | HELP/KEY directory with brief description |
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| 33 | HELP/CALL directory with calling syntax |
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| 34 | HELP <cmd> detailed help on command <cmd>, example: HELP HELP |
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| 35 | |
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| 36 | - read & write commands |
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| 37 | READA <filename> [<dt> <length>] |
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| 38 | reads data from ASCII files |
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| 39 | READS <path> <time> <seclength> <stations> <comps> <chan> |
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| 40 | reads from Mini-SEED files (special SH subformat) |
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| 41 | READ <q-file> <list> reads data from q-file (private SH data format) |
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| 42 | WRITE <q-file> <list> |
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| 43 | writes data to q-file |
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| 44 | |
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| 45 | - redraw display |
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| 46 | RD redraws display |
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| 47 | NR disables automatic redrawing (re-enable with RD) |
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| 48 | |
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| 49 | - set & delete time windows |
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| 50 | STW set time window |
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| 51 | DTW delete time window |
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| 52 | |
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| 53 | - pick time position on traces |
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| 54 | TIME gives absolute and relative time, also difference |
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| 55 | time to last pick, exit with "E"-key |
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| 56 | |
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| 57 | - delete traces |
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| 58 | DEL <list> deletes all traces of <list> |
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| 59 | |
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| 60 | - shift traces |
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| 61 | SHIFT <list> <time> shift all traces in <list> by <time> seconds |
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| 62 | SHIFT ALL TIME_AL shift traces according to their position in absolute |
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| 63 | time |
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| 64 | T-ALIGN repositions all traces correct in time |
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| 65 | |
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| 66 | |
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| 67 | - trace amplitudes |
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| 68 | NORM AF default setting. Traces are normalized to the maximum |
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| 69 | value of all traces on the display |
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| 70 | NORM SF all traces are displayed with the same amplitude |
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| 71 | ZOOM <list> <f> all traces in <list> are amplified by a factor of <f> |
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| 72 | this is independent from the NORM command |
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| 73 | |
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| 74 | - filtering traces (FFT filters) |
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| 75 | FILI F <filter> read in filter file (contains poles and zeroes) |
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| 76 | FILTER F <list> filters list of traces |
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| 77 | MAKEF calls external program to create filter files |
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| 78 | |
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| 79 | - location of events |
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| 80 | LOCATE computes azimuth and slowness for picked phase |
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| 81 | exit with "E"-key |
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| 82 | Traces MUST have the correct position in time ! |
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| 83 | ensure with the command T-ALIGN. |
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| 84 | |
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| 85 | - beaming of traces |
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| 86 | DELAY+SUM <list> <a> <s> |
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| 87 | shifts traces to align a phase coming from an azimuth |
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| 88 | of <a> and a slowness of <s>. Traces are aligned |
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| 89 | in time automatically before operation. |
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| 90 | |
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| 91 | - summing of traces |
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| 92 | SUM <list> sums all traces specified in <list> |
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| 93 | |
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| 94 | - hardcopy |
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| 95 | PHC;; creates PostScript file and sends it to laser printer |
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| 96 | TITLE <n> <t> puts a title line on the display |
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| 97 | |
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| 98 | - rotation of traces |
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| 99 | ROTAZ <list> <azim> rotates horizontal traces to R and T |
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| 100 | |
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| 101 | - particle motion diagrams |
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| 102 | PMSTART <wdwsize> opens separate window of size <wdwsize> x <wdwsize> cm. |
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| 103 | PM/MWDW <list> <wd> particle motion diagrams of N pairs of traces given by |
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| 104 | 2N elements in <list>. <wd> is width of time window. |
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| 105 | PM3 <wd> abbreviation of PM/MWDW 2,1,3,2,3,1 <wd> |
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| 106 | if 3 traces are on the display, same for 6 and 9 traces |
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| 107 | PMEND closes PM window |
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| 108 | Before using the PM command, set an appropriate time |
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| 109 | window with the STW command. |
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| 110 | |
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| 111 | - utilities |
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| 112 | DEMEAN <list> removes mean value |
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| 113 | TREND <list> removes linear trend |
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| 114 | DESPIKE <list> <f> removes spikes |
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| 115 | DECIMATE <list> <f> decimate traces (average deleted samples) |
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| 116 | CUT <list> <lo> <hi> cuts traces at the specified time bounds |
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| 117 | MARK <trc> <time> marks trace (marks can be labelled, see HELP MARK) |
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| 118 | SYSTEM access to UNIX shell |
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| 119 | @ execute single command case sensitive |
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| 120 | |
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| 121 | |
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| 122 | |
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