NAME

       pspolar -   Plot   polarities   on   the   inferior  focal
       half-sphere on maps


SYNOPSIS

       pspolar files -Jparameters -Rwest/east/south/north  -Dlon­
       gitude/latitude  -Msize  -S<symbol><size> [ -Btickinfo ] [
       -Clongitude/latitude[/dash_width/pointsize]      ]       [
       -Fred/green/blue  ]  [ -Gfill ] [ -gfill ] [ -H ] [ -h ] [
       -K  ]  [  -L  ]  [  -N  ]  [  -O  ]  [  -P  ]  [   -sHalf-
       size[v[[<v_width/h_length/h_width/shape>]][g[<r/g/b>]][l]
       [ -Tangle/form/justify/fontsize ] [ -t<pen> ] [  -U[label]
       ]  [ -V ] [ -Wpen ] [ -Xx-shift ] [ -Yy-shift ] [ -ccopies
       ]


DESCRIPTION

       pspolar reads data values from files [or  standard  input]
       and  generates  PostScript code that will plot stations on
       focal mechanisms on a map.  The PostScript code is written
       to standard output.

       Parameters are expected to be in the following columns

       1,2,3,4
              station_code, azimuth, take-off angle, polarity

              polarity :
              - compression can be c,C,u,U,+
              - rarefaction can be d,D,r,R,-
              - not defined is anything else



ARGUMENTS

       files  List one or more file-names. If no files are given,
       pspolar will read standard input.

       -J     Selects the map projection. Scale  is  UNIT/degree,
              1:xxxxx,  or  width  in UNIT (upper case modifier).
              UNIT is cm, inch,  or  m,  depending  on  the  MEA­
              SURE_UNIT  setting in .gmtdefaults, but this can be
              overridden on the command line by appending the  c,
              i, or m to the scale/width value.

              CYLINDRICAL PROJECTIONS:

              -Jclon0/lat0/scale (Cassini)
              -Jjlon0/scale (Miller)
              -Jmscale  (Mercator - Greenwich and Equator as ori­
              gin)
              -Jmlon0/lat0/scale (Mercator -  Give  meridian  and
              standard parallel)
              -Joalon0/lat0/azimuth/scale   (Oblique  Mercator  -
              point and azimuth)
              -Joblon0/lat0/lon1/lat1/scale (Oblique  Mercator  -
              two points)
              -Joclon0/lat0/lonp/latp/scale  (Oblique  Mercator -
              point and pole)
              -Jqlon0/scale (Equidistant  Cylindrical  Projection
              (Plate Carree))
              -Jtlon0/scale (TM - Transverse Mercator, with Equa­
              tor as y = 0)
              -Jtlon0/lat0/scale (TM - Transverse  Mercator,  set
              origin)
              -Juzone/scale (UTM - Universal Transverse Mercator)
              -Jylon0/lats/scale (Basic Cylindrical Projection)

              AZIMUTHAL PROJECTIONS:

              -Jalon0/lat0/scale (Lambert).
              -Jelon0/lat0/scale (Equidistant).
              -Jflon0/lat0/horizon/scale (Gnomonic).
              -Jglon0/lat0/scale (Orthographic).
              -Jslon0/lat0/[slat/]scale (General Stereographic)

              CONIC PROJECTIONS:

              -Jblon0/lat0/lat1/lat2/scale (Albers)
              -Jdlon0/lat0/lat1/lat2/scale (Equidistant)
              -Jllon0/lat0/lat1/lat2/scale (Lambert)

              MISCELLANEOUS PROJECTIONS:

              -Jhlon0/scale (Hammer)
              -Jilon0/scale (Sinusoidal)
              -Jk[f|s]lon0/scale (Eckert IV (f) and VI (s))
              -Jnlon0/scale (Robinson)
              -Jrlon0/scale (Winkel Tripel)
              -Jvlon0/scale (Van der Grinten)
              -Jwlon0/scale (Mollweide)

              NON-GEOGRAPHICAL PROJECTIONS:

              -Jp[a]scale[/origin] (polar (theta,r)  coordinates,
              optional a for azimuths and offset theta [0])
              -Jxx-scale[l|ppow][/y-scale[l|ppow]]  (Linear, log,
              and power scaling)
              More details can be found  in  the  psbasemap  man­
              pages.

       -R     west,  east, south, and north specify the Region of
              interest. To specify boundaries in degrees and min­
              utes  [and  seconds],  use  the  dd:mm[:ss] format.
              Append r if lower left and upper right map  coordi­
              nates are given instead of wesn.

       -Dlongitude/latitude
              Maps  the  bubble  at  given longitude and latitude
              point.

       -Msize Sets the size of the beach ball to plot  polarities
              in.  Size  is  in  inch  (unless  c,  i, m, or p is
              appended).

       -S<symbol_type><size>
              Selects symbol_type and symbol size.   Size  is  in
              inch  (unless  c,  i, m, or p is appended).  Choose
              symbol  type  from  st(a)r,  (c)ircle,   (d)iamond,
              (h)exagon,  (i)nverted triangle, (p)oint, (s)quare,
              (t)riangle, (x)cross.



OPTIONS

       No space between the option flag and the associated  argu­
       ments.

       -B     Sets map boundary tickmark intervals. See psbasemap
              for details.

       -C     Offsets focal mechanisms to the latitude and longi­
              tude specified in the last two columns of the input
              file.

       -Efill Selects filling of symbols for stations  in  exten­
              sive  quadrants.   Set  the  shade (0-255) or color
              (r/g/b) [Default is 250/250/250].  If -Efill is the
              same as -Ffill, use -e to outline.

       -e[pen]
              Outline symbols in extensive quadrants using pen or
              the default pen (see -W).

       -Ffill Sets background color of the beach ball. Default is
              no fill.

       -f[pen]
              Outline the beach ball using pen or the default pen
              (see -W).

       -Gfill Selects filling of symbols for stations in compres­
              sional  quadrants.   Set the shade (0-255) or color
              (r/g/b) [Default is 0/0/0].

       -g[pen]
              Outline symbols in  compressional  quadrants  using
              pen or the default pen (see -W).

       -H     Input  file(s)  has  Header  record(s).  Number  of
              header records can be changed by editing your .gmt­
              defaults  file.  If  used,  GMT default is 1 header
              record.

       -h     Use special format derived from HYPO71 output

       -K     More  PostScript  code  will  be   appended   later
              [Default terminates the plot system].

       -N     Does  NOT skip symbols that fall outside map border
              [Default plots points inside border only].

       -O     Selects Overlay plot mode  [Default  initializes  a
              new plot system].

       -P     Selects  Portrait  plotting  mode  [GMT  Default is
              Landscape, see gmtdefaults to change this].

       -shalf-size/[V[<v_width/h_length/h_width/shape>]][G<r/g/b>][L]
              Plots S polarity azimuth.
              S polarity is in last column.  It may be  a  vector
              (V      option)     or     a     segment.      Give
              half-size,v_width,h_length,h_width in inch  (unless
              c, i, m, or p is appended).  [L] option is for out­
              line.

       -Tangle/form/justify/fontsize in points
              To write station code. [Default is 0.0/0/5/12].

       -t<pen>
              Set pen color to write station code.  Default  uses
              the default pen (see -W).

       -U     Draw Unix System time stamp on plot. User may spec­
              ify where the lower left corner of the stamp should
              fall  on  the page relative to lower left corner of
              plot. Optionally, append a label, or c (which  will
              plot  the  command  string.).  The  GMT  parameters
              UNIX_TIME and UNIX_TIME_POS can affect the  appear­
              ance; see the gmtdefaults man page for details.

       -V     Selects  verbose  mode,  which  will  send progress
              reports to stderr [Default runs "silently"].

       -W     Set current pen attributes
               [Defaults: width = 1, color  =  0/0/0,  texture  =
              solid].

       -X -Y  Shift origin of plot by (x-shift,y-shift).  Prepend
              a for absolute coordinates; the  default  (r)  will
              reset plot origin.

       -:     Toggles  between  (longitude,latitude)  and  (lati­
              tude,longitude) input/output. [Default  is  (longi­
              tude,latitude)].  Applies to geographic coordinates
              only.

       -c     Specifies the number of plot copies. [Default is 1]


EXAMPLES

       pspolar  <<  END  -R239/240/34/35.2  -JM8  -N  -Sc0.4  -H1
       -D239.5/34.5 -M5 >! test.ps
       stat azim ih pol
       0481 11 147 c
       6185 247 120 d
       0485 288 114 +
       0490 223 112 -
       0487 212 109 .
       END
       or
       pspolar  <<  END  -R239/240/34/35.2  -JM8  -N  -Sc0.4  -H1
       -D239.5/34.5 -M5 -h >! test.ps
       Date Or. time stat azim ih
       910223 1 22 0481 11 147 ipu0
       910223 1 22 6185 247 120 ipd0
       910223 1 22 0485 288 114 epu0
       910223 1 22 0490 223 112 epd0
       910223 1 22 0487 212 109 epu0
       END



SEE ALSO

       gmt(l), psbasemap(l) psxy(l)


REFERENCES

       Bomford,  G.,  Geodesy,  4th ed., Oxford University Press,
       1980.
       Aki, K. and P. Richards, Quantitative Seismology, Freeman,
       1980.


AUTHORS

       Genevieve Patau
       Seismology Dept.
       Institut de Physique du Globe de Paris
       (patau@ipgp.jussieu.fr)



                            1 Feb 2002                 PSPOLAR(l)

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