NAME

       psxyz - Plot lines, polygons, and symbols in 3-D


SYNOPSIS

       psxyz files -Jparameters -Rwest/east/south/north/zmin/zmax[r] [ -Btick-
       info ] [ -Ccptfile ] [ -Eazimuth/elevation ] [ -Gfill ] [ -H[nrec] ]  [
       -K  ]  [  -L ] [ -M[flag] ] [ -N ] [ -O ] [ -P ] [ -S[symbol][size] ] [
       -U[/dx/dy/][label] ] [ -V ] [ -W[pen] ] [ -Xx-shift ] [ -Yy-shift  ]  [
       -Zzlevel ] [ -: ] [ -ccopies ] [ -bi[s][n] ]


DESCRIPTION

       psxyz  reads (x,y,z) triplets from files [or standard input] and gener-
       ates PostScript code that will plot  lines,  polygons,  or  symbols  at
       those  locations  in  3-D.   If a symbol is selected and no symbol size
       given, then psxyz will interpret the fourth column of the input data as
       symbol  size.   Symbols  whose size is <= 0 are skipped.  If no symbols
       are specified then the symbol code (see -S below) must  be  present  as
       last  column in the input.  Multiple segment files may be plotted using
       the -M option.  If no symbols are selected, a line will be  drawn.   To
       explicitly  close  polygons, use -L.  Select a shade with -G.  If -G is
       set, -W will control whether the polygon outline is drawn or not.  If a
       symbol  is selected, -G and -W determines the fill color and outline/no
       outline, respectively.  The PostScript code is written to standard out-
       put.

       files  List  one  or more file-names. If no files are given, psxyz 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 MEASURE_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 origin)
              -Jmlon0/lat0/scale (Mercator - Give meridian and standard paral-
              lel)
              -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 Car-
              ree))
              -Jtlon0/scale (TM - Transverse Mercator, with Equator 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 manpages.

       -Jz    Sets the vertical scaling (for 3-D maps).  Same syntax as -Jx.

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


OPTIONS

       No space between the option flag and the associated arguments.

       -B     Sets map boundary tickmark intervals; see the psbasemap man page
              for details.

       -C     Give a color palette file.  If -S is set, let  symbol  color  be
              determined  by  the  t-value  in  the fourth column.  Additional
              fields are shifted over by one column (optional size would be in
              5th  rather than 4th field, etc.).  If -S is not set, then psxyz
              expects a multisegment polygon file  (requires  -M)  where  each
              segment  header  contains  a -Zval string.  The val controls the
              polygon color via the cpt file.

       -E     Sets the viewpoint's azimuth and elevation [180/90].

       -G     Select filling  of  polygons  and  symbols.   Append  the  shade
              (0-255),   color  (r/g/b),  or  P|pdpi/pattern  (polygons  only)
              [Default is no fill].  Note when -M is chosen, psxyz will search
              for  -G  and  -W strings in all the subheaders and let any found
              values over-ride the command line settings.

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

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

       -L     Force  closed  polygons: will connect the endpoints of the line-
              sement(s) and draw polygons.

       -M     Multiple segment file.  Segments are separated by a record whose
              first character is flag.  [Default is '>'].

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

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

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

       -S     Plot symbols.  size is symbol size in the unit  set  in  .gmtde-
              faults  (unless c, i, m, or p is appended).   The uppercase sym-
              bols A, C, D, H, I, S, T are normalized to have the same area as
              a  circle  of given size, while the corresponding lowercase sym-
              bols are circumscribed by the circle.  Choose between:

       -S     Read symbol code (see below) from last column in the input data.
              Cannot be used in conjunction with -b.  Optionally, append c, i,
              m, p to indicate that the size information in the input data  is
              in units of cm, inch, meter, or point, respectively. [Default is
              MEASURE_UNIT].

       -Sa    star.  size is diameter of circumscribing circle.

       -Sb    (b)ar extending from base to y.  size is bar width.  Append u if
              size is in x-units [Default is plot-distance units]. By default,
              base = 0.  Append bbase to change this value.

       -Sc    (c)ircle.  size is diameter of circle.

       -Sd    (d)iamond.  size is diameter of circumscribing circle.

       -Se    ellipse.  Direction (in degrees counterclockwise  from  horizon-
              tal),  major_axis, and minor_axis must be found in columns 4, 5,
              and 6.

       -SE    Same as -Se, except azimuth (in degrees east of north) should be
              given  instead of direction.  The azimuth will be mapped into an
              angle based on the chosen map projection (-Se leaves the  direc-
              tions  unchanged.)   Furthermore, the axes lengths must be given
              in km instead of plot-distance units.

       -Sf    front.  -Sfgap/size[dir][type][:offset].   Supply  distance  gap
              between  symbols  and  symbol  size.   If gap is negative, it is
              interpreted to mean  the  number  of  symbols  along  the  front
              instead.   Append  dir to plot symbols on the left or right side
              of the front [Default is  centered].   Append  type  to  specify
              which  symbol  to  plot:  box, circle, fault, slip, or triangle.
              [Default is fault].  Slip means  left-lateral  or  right-lateral
              strike-slip  arrows (centered is not an option).  Append :offset
              to offset the first symbol from the beginning of  the  front  by
              that amount [0].

       -Sh    hexagon.  size is diameter of circumscribing circle.

       -Si    inverted triangle.  size is diameter of circumscribing circle.

       -Sl    letter or text string (less than 64 characters).  Give size, and
              append /string after the size.   Note  that  the  size  is  only
              approximate; no individual scaling is done for different charac-
              ters.  Remember to escape special characters  like  *.   Option-
              ally,  you may append %font to select a particular font [Default
              is ANOT_FONT].

       -So    c(o)lumn (3-D) extending from base to z.  size sets  base  width
              (Use  xsize/ysize  if  not the same).  Append u if size is in x-
              units [Default is plot-distance units].  By default, base  =  0.
              Append bbase to change this value.

       -Sp    (p)oint.  No size needs to be specified.

       -Ss    (s)quare.  size is diameter of circumscribing circle.

       -St    (t)riangle.  size is diameter of circumscribing circle.

       -Su    c(u)be  (3-D).   size sets length of all sides. Append u if size
              is in x-units [Default is plot-distance units].

       -Sv    (v)ector.  Direction and length must be found in columns  4  and
              5.   size  means arrowwidth/headlength/headwidth in [[Default is
              0.075c/0.3c/0.25c  (or  0.03i/0.12i/0.1i)].   By  default  arrow
              attributes  remains  invariant  to  the length of the arrow.  To
              have the size of the vector scale  down  with  decreasing  size,
              append  nnorm,  where  vectors shorter than norm will have their
              attributes scaled by length/norm.

       -SV    Same as -Sv, except azimuth should be given  instead  of  direc-
              tion.   The  azimuth  will  be mapped into an angle based on the
              chosen map projection (-Sv leaves the directions unchanged.)

       -Sw    pie wedge.  Start and stop directions (in degrees counter-clock-
              wise  from  horizontal) for pie slice must be found in columns 4
              and 5.

       -Sx    (x)cross. size is diameter of circumscribing circle.

       -U     Draw Unix System time stamp on plot.  User may specify 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 appearance;  see  the
              gmtdefaults man page for details.

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

       -W     Set pen attributes.  [Defaults: width = 1, color =  0/0/0,  tex-
              ture  =  solid].   Implicitly  draws  the outline of symbol with
              selected pen.

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

       -Z     For 3-D projections:  Sets the z-level of the basemap [0].

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

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

       -bi    Selects binary input.  Append s for single precision [Default is
              double].  Append n for the  number  of  columns  in  the  binary
              file(s).   [Default  is the required number of columns given the
              settings].


EXAMPLES

       To plot blue columns (width = 1.25 cm) at the positions listed  in  the
       file  heights.xyz  on  a  3-D  projection  of the space (0-10), (0-10),
       (0-100),  with tickmarks every 2, 2, and 10, viewing it from the south-
       east at 30 degree elevation, try:

       psxyz   heights.xyz   -R0/10/0/10/0/100   -Jx1.25c  -Jz0.125c  -So1.25c
       -G0/0/255 -B2:XLABEL:/2:YLABEL:/10:ZLABEL::."3-D PLOT":15 -E135/30  -Uc
       -W -P > heights.ps


BUGS

       No  hidden  line  removal is employed for polygons and lines.  Symbols,
       however, are first sorted according to their distance  from  the  view-
       point  so  that  nearby symbols will overprint more distant ones should
       they project to the same x,y position.
       psxyz cannot handle filling of polygons that contain the south or north
       pole.   For  such a polygon, make a copy and split it into two and make
       each explicitly contain the polar point.  The two polygons will combine
       to  give the desired effect when filled; to draw outline use the origi-
       nal polygon.
       The -N option does not adjust the BoundingBox information  so  you  may
       have  to  post-process the PostScript outout with epstool or ps2epsi to
       obtain a correct BoundingBox.


SEE ALSO

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



VERSION                              DATE                             PSXYZ(l)

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