NAME¶
psxyz - Plot lines, polygons, and symbols in 3-D
SYNOPSIS¶
psxyz files -Jparameters
-Rwest/east/south/north/zmin/zmax[r]
[ -Btickinfo ] [
-Ccptfile ] [
-Eazimuth/elevation ] [
-G fill ] [ -H[nrec] ]
[ -K ] [ -L ] [
-M[flag] ] [ -N ] [
-O ] [ -P ] [
-S[symbol][size] ] [
-U[/dx/dy/][label] ] [
-V ] [ -W[pen] ] [
-X x-shift ] [
-Yy-shift ] [ -Zzlevel
] [ -: ] [ -ccopies ] [
-bi[s][n] ]
DESCRIPTION¶
psxyz reads (x,y,z) triplets from
files [or standard input] and
generates
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 output.
- 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
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 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 psbasemap 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 -Z val 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].
- -bo
- Selects binary output. Append s for single precision [Default is
double].
- -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 .gmtdefaults
(unless c, i, m, or p is appended). The
uppercase symbols A, C, D, H, I, S, T are normalized to have the
same area as a circle of given size, while the corresponding lowercase
symbols 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 horizontal),
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 directions
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 characters.
Remember to escape special characters like *. Optionally, 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
0.075 c/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 direction.
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-clockwise
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, texture = solid].
Implicitly draws the outline of symbol with selected pen.
- -X -Y
- Shift origin of plot by (x-shift,y-shift). Prepend a for
absolute 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 southeast at 30 degree
elevation, try:
psxyz heights.xyz
-R0/10/0/10/0/100
-Jx1.25
c -Jz0.125
c
-So1.25
c -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 viewpoint 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 original 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(1gmt),
psbasemap(1gmt),
psxy(1gmt)