Provided by: gmt-common_5.4.3+dfsg-1_all 
NAME
psternary - Plot data on ternary diagrams
SYNOPSIS
psternary [ table ] [ -JX *width*[unit] ] [ -Rwest/east/south/north[/zmin/zmax][+r] ] [
-B[p|s]parameters ] [ -Ccpt ] [ -Gfill ] [ -K ] [ -La/b/c ] [ -M ] [ -N ] [ -O ] [
-P ] [ -S[symbol][size[u] ] [ -U[stamp] ] [ -V[level] ] [ -W[pen][attr] ] [
-Xx_offset ] [ -Yy_offset ] [ -aflags ] [ -bibinary ] [ -dinodata ] [ -eregexp ] [
-fflags ] [ -ggaps ] [ -hheaders ] [ -iflags ] [ -pflags ] [ -ttransp ] [ -:[i|o] ]
Note: No space is allowed between the option flag and the associated arguments.
DESCRIPTION
psternary reads (a,b,c[,*z*]) records from files [or standard input] and generates
PostScript code that will plot symbols at those locations on a ternary diagram. If a
symbol is selected and no symbol size given, then psternary 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. The PostScript code is written to standard output.
OPTIONAL ARGUMENTS
table One or more ASCII (or binary, see -bi[ncols][type]) data table file(s) holding a
number of data columns. If no tables are given then we read from standard input.
Use -T to ignore all input files, including standard input (see below).
-B[a|b|c]*args*
For ternary diagrams the three sides are referred to as a, b, and c. Thus, to give
specific settings for one of these axis you must include the axis letter before the
arguments. If all axes have the same arguments then only give one option without
the axis letter. For more details, see the -B discussion in psbasemap.
-Ccpt Give a CPT or specify -Ccolor1,color2[,color3,…] to build a linear continuous CPT
from those colors automatically. In this case colorn can be a r/g/b triplet, a
color name, or an HTML hexadecimal color (e.g. #aabbcc ). If -S is set, let symbol
fill color be determined by the z-value in the fourth column. Additional fields are
shifted over by one column (optional size would be 5th rather than 4th field,
etc.).
-Gfill Select color or pattern for filling of symbols [Default is no fill]. Note that
psternary will search for -G and -W strings in all the segment headers and let any
values thus found over-ride the command line settings.
-JXwidth [unit]
The only valid projection is linear plot with specified ternary width.
-K (more …)
Do not finalize the PostScript plot.
-La/b/c
Set the labels for the three diagram vertices [none]. These are placed a distance
of 3 times the MAP_LABEL_OFFSET setting from their respective corners.
-M Do no plotting. Instead, convert the input (a,b,c[,*z*]) records to Cartesian
(x,y,[,*z*]) records, where x, y are normalized coordinates on the triangle (i.e.,
0-1 in xand 0-sqrt(3)/2 in y).
-N Do NOT clip symbols that fall outside map border [Default plots points whose
coordinates are strictly inside the map border only].
-O (more …)
Append to existing PostScript plot.
-P (more …)
Select “Portrait” plot orientation.
-Ramin/amax/bmin/bmax/cmin/cmax
Give the min and max limits for each of the three axis a, b, and c.
-S[symbol][size[u]]
Plot symbols (including vectors, pie slices, fronts, decorated or quoted lines).
If present, size is symbol size in the unit set in gmt.conf (unless c, i, or p is
appended). If the symbol code (see below) is not given it will be read from the
last column in the input data; this cannot be used in conjunction with binary
input. Optionally, append c, i, or p to indicate that the size information in the
input data is in units of cm, inch, or point, respectively [Default is
PROJ_LENGTH_UNIT]. Note: if you provide both size and symbol via the input file you
must use PROJ_LENGTH_UNIT to indicate the unit used for the symbol size or append
the units to the sizes in the file. If symbol sizes are expected via the third
data column then you may convert those values to suitable symbol sizes via the -i
mechanism.
The uppercase symbols A, C, D, G, H, I, N, S, T are normalized to have the same
area as a circle with diameter size, while the size of the corresponding lowercase
symbols refers to the diameter of a circumscribed circle.
You can change symbols by adding the required -S option to any of your multisegment
headers.
Choose between these symbol codes:
-S- x-dash (-). size is the length of a short horizontal (x-dir) line segment.
-S+ plus (+). size is diameter of circumscribing circle.
-Sa star. size is diameter of circumscribing circle.
-Sb[size[c|i|p|u]][b[base]]
Vertical bar 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 = ymin.
Append b[base] to change this value. If base is not appended then we read it
from the last input data column.
-SB[size[c|i|p|u]][b[base]]
Horizontal bar extending from base to x. size is bar width. Append u if
size is in y-units [Default is plot-distance units]. By default, base =
xmin. Append b[base] to change this value. If base is not appended then we
read it from the last input data column.
-Sc circle. size is diameter of circle.
-Sd diamond. size is diameter of circumscribing circle.
-Se ellipse. Direction (in degrees counter-clockwise from horizontal),
major_axis, and minor_axis must be found in columns 3, 4, and 5.
-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 geographical instead of plot-distance
units. An exception occurs for a linear projection in which we assume the
ellipse axes are given in the same units as -R. For degenerate ellipses
(circles) with just the diameter given, use -SE-. The diameter is excepted
to be given in column 3. Alternatively, append the desired diameter to -SE-
and this fixed diameter is used instead. For allowable geographical units,
see UNITS.
-Sfgap[/size][+l|+r][+b+c+f+s+t][+ooffset][+p[pen]].
Draw a front. 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. If size is missing it is set to 30% of the gap, except when gap is
negative and size is thus required. Append +l or +r 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). The +s modifier optionally accepts the
angle used to draw the vector [20]. Alternatively, use +S which draws
arcuate arrow heads. Append +ooffset to offset the first symbol from the
beginning of the front by that amount [0]. The chosen symbol is drawn with
the same pen as set for the line (i.e., via -W). The use an alternate pen,
append +ppen. To skip the outline, just use +p. Note: By placing -Sf
options in the segment header you can change the front types on a
segment-by-segment basis.
-Sg octagon. size is diameter of circumscribing circle.
-Sh hexagon. size is diameter of circumscribing circle.
-Si inverted triangle. size is diameter of circumscribing circle.
-Sj Rotated rectangle. Direction (in degrees counter-clockwise from horizontal),
x-dimension, and y-dimension must be found in columns 3, 4, and 5.
-SJ Same as -Sj, 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 (-Sj leaves the directions unchanged.) Furthermore,
the dimensions must be given in geographical instead of plot-distance units.
For a degenerate rectangle (square) with one dimension given, use -SJ-. The
dimension is excepted to be given in column 3. Alternatively, append the
dimension diameter to -SJ- and this fixed dimension is used instead. An
exception occurs for a linear projection in which we assume the dimensions
are given in the same units as -R. For allowable geographical units, see
UNITS.
-Sk kustom symbol. Append name/size, and we will look for a definition file
called name.def in (1) the current directory or (2) in ~/.gmt or (3) in
$GMT_SHAREDIR/custom. The symbol as defined in that file is of size 1.0 by
default; the appended size will scale symbol accordingly. Users may add
their own custom *.def files; see CUSTOM SYMBOLS below.
-Sl letter or text string (less than 256 characters). Give size, and append
+tstring 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 +ffont to select a
particular font [Default is FONT_ANNOT_PRIMARY] and +jjustify to change
justification [CM].
-Sm math angle arc, optionally with one or two arrow heads [Default is no arrow
heads]. The size is the length of the vector head. Arc width is set by -W.
The radius of the arc and its start and stop directions (in degrees
counter-clockwise from horizontal) must be given in columns 3-5. See VECTOR
ATTRIBUTES for specifying other attributes.
-SM Same as -Sm but switches to straight angle symbol if angles subtend 90
degrees exactly.
-Sn pentagon. size is diameter of circumscribing circle.
-Sp point. No size needs to be specified (1 pixel is used).
-Sq quoted line, i.e., lines with annotations such as contours. Append
[d|D|f|l|L|n|N|s|S|x|X]info[:labelinfo]. The required argument controls the
placement of labels along the quoted lines. Choose among six controlling
algorithms:
ddist[c|i|p] or Ddist[d|e|f|k|m|M|n|s]
For lower case d, give distances between labels on the plot in
your preferred measurement unit c (cm), i (inch), or p (points),
while for upper case D, specify distances in map units and append
the unit; choose among e (m), f (foot), k (km), M (mile), n
(nautical mile) or u (US survey foot), and d (arc degree), m (arc
minute), or s (arc second). [Default is 10c or 4i]. As an option,
you can append /fraction which is used to place the very first
label for each contour when the cumulative along-contour distance
equals fraction * dist [0.25].
fffile.d
Reads the ASCII file ffile.d and places labels at locations in the
file that matches locations along the quoted lines. Inexact
matches and points outside the region are skipped.
l|Lline1[,line2,…]
Give the coordinates of the end points for one or more
comma-separated straight line segments. Labels will be placed
where these lines intersect the quoted lines. The format of each
line specification is start_lon/start_lat/stop_lon/stop_lat. Both
start_lon/start_lat and stop_lon/stop_lat can be replaced by a
2-character key that uses the justification format employed in
pstext to indicate a point on the frame or center of the map,
given as [LCR][BMT]. L will interpret the point pairs as defining
great circles [Default is straight line].
n|Nn_label
Specifies the number of equidistant labels for quoted lines [1].
Upper case N starts labeling exactly at the start of the line
[Default centers them along the line]. N-1 places one justified
label at start, while N+1 places one justified label at the end of
quoted lines. Optionally, append /min_dist[c|i|p] to enforce that
a minimum distance separation between successive labels is
enforced.
s|Sn_label
Same as n|Nn_label but implies that the input data are first to be
converted into a series of 2-point line segments before plotting.
x|Xxfile.d
Reads the multisegment file xfile.d and places labels at the
intersections between the quoted lines and the lines in xfile.d.
X will resample the lines first along great-circle arcs. In
addition, you may optionally append +rradius[c|i|p] to set a
minimum label separation in the x-y plane [no limitation].
The optional labelinfo controls the specifics of the label formatting and
consists of a concatenated string made up of any of the following control
arguments:
+aangle
For annotations at a fixed angle, +an for line-normal, or +ap for
line-parallel [Default].
+cdx[/dy]
Sets the clearance between label and optional text box. Append
c|i|p to specify the unit or % to indicate a percentage of the
label font size [15%].
+d Turns on debug which will draw helper points and lines to
illustrate the workings of the quoted line setup.
+e Delay the plotting of the text. This is used to build a clip path
based on the text, then lay down other overlays while that clip
path is in effect, then turning of clipping with psclip -Cs which
finally plots the original text.
+ffont Sets the desired font [Default FONT_ANNOT_PRIMARY with its size
changed to 9p].
+g[color]
Selects opaque text boxes [Default is transparent]; optionally
specify the color [Default is PS_PAGE_COLOR].
+jjust Sets label justification [Default is MC]. Ignored when -SqN|n+|-1
is used.
+llabel
Sets the constant label text.
+Lflag Sets the label text according to the specified flag:
+Lh Take the label from the current segment header (first scan for
an embedded -Llabel option, if not use the first word following
the segment flag). For multiple-word labels, enclose entire label
in double quotes. +Ld Take the Cartesian plot distances along the
line as the label; append c|i|p as the unit [Default is
PROJ_LENGTH_UNIT]. +LD Calculate actual map distances; append
d|e|f|k|n|M|n|s as the unit [Default is d(egrees), unless label
placement was based on map distances along the lines in which case
we use the same unit specified for that algorithm]. Requires a map
projection to be used. +Lf Use text after the 2nd column in the
fixed label location file as the label. Requires the fixed label
location setting. +Lx As +Lh but use the headers in the xfile.d
instead. Requires the crossing file option.
+ndx[/dy]
Nudges the placement of labels by the specified amount (append
c|i|p to specify the units). Increments are considered in the
coordinate system defined by the orientation of the line; use +N
to force increments in the plot x/y coordinates system [no
nudging]. Not allowed with +v.
+o Selects rounded rectangular text box [Default is rectangular].
Not applicable for curved text (+v) and only makes sense for
opaque text boxes.
+p[pen]
Draws the outline of text boxes [Default is no outline];
optionally specify pen for outline [Default is width = 0.25p,
color = black, style = solid].
+rmin_rad
Will not place labels where the line’s radius of curvature is less
than min_rad [Default is 0].
+t[file]
Saves line label x, y, and text to file [Line_labels.txt]. Use +T
to save x, y, angle, text instead.
+uunit Appends unit to all line labels. If unit starts with a leading
hyphen (-) then there will be no space between label value and the
unit. [Default is no unit].
+v Specifies curved labels following the path [Default is straight
labels].
+w Specifies how many (x,y) points will be used to estimate label
angles [Default is 10].
+x[first,last]
Append the suffices first and last to the corresponding labels.
This modifier is only available when -SqN2 is in effect. Used to
annotate the start and end of a line (e.g., a cross-section),
append two text strings separated by comma [Default just adds a
prime to the second label].
+=prefix
Prepends prefix to all line labels. If prefix starts with a
leading hyphen (-) then there will be no space between label value
and the prefix. [Default is no prefix].
Note: By placing -Sq options in the segment header you can change the quoted
text attributes on a segment-by-segment basis.
-Sr rectangle. No size needs to be specified, but the x- and y-dimensions must
be found in columns 3 and 4.
-SR Rounded rectangle. No size needs to be specified, but the x- and
y-dimensions and corner radius must be found in columns 3, 4, and 5.
-Ss square. size is diameter of circumscribing circle.
-St triangle. size is diameter of circumscribing circle.
-Sv vector. Direction (in degrees counter-clockwise from horizontal) and length
must be found in columns 3 and 4, and size, if not specified on the
command-line, should be present in column 5. The size is the length of the
vector head. Vector width is set by -W. See VECTOR ATTRIBUTES for
specifying other attributes.
-SV Same as -Sv, 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 (-Sv leaves the directions unchanged.) See VECTOR
ATTRIBUTES for specifying other attributes.
-Sw pie wedge. Start and stop directions (in degrees counter-clockwise from
horizontal) for pie slice must be found in columns 3 and 4. Append +a to
just draw the arc line or +r to just draw the radial lines.
-SW Same as -Sw, except azimuths (in degrees east of north) should be given
instead of the two directions. The azimuths will be mapped into angles based
on the chosen map projection (-Sw leaves the directions unchanged.) For
geo-wedges, specify size as a radial geographical distance. For allowable
geographical units, see UNITS. Append +a to just draw the arc or +r to just
draw the radial lines.
-Sx cross (x). size is diameter of circumscribing circle.
-Sy y-dash (|). size is the length of a short vertical (y-dir) line segment.
-S= geovector. Azimuth (in degrees east from north) and geographical length must
be found in columns 3 and 4. The size is the length of the vector head.
Vector width is set by -W. See VECTOR ATTRIBUTES for specifying attributes.
Note: Geovector stems are drawn as thin filled polygons and hence pen
attributes like dashed and dotted are not available. For allowable
geographical units, see UNITS.
-S~ decorated line, i.e., lines with symbols along them. Append
[d|D|f|l|L|n|N|s|S|x|X]info[:symbolinfo]. The required argument controls
the placement of symbols along the decorated lines. Choose among six
controlling algorithms:
ddist[c|i|p] or Ddist[d|e|f|k|m|M|n|s]
For lower case d, give distances between symbols on the plot in
your preferred measurement unit c (cm), i (inch), or p (points),
while for upper case D, specify distances in map units and append
the unit; choose among e (m), f (foot), k (km), M (mile), n
(nautical mile) or u (US survey foot), and d (arc degree), m (arc
minute), or s (arc second). [Default is 10c or 4i]. As an option,
you can append /fraction which is used to place the very first
symbol for each line when the cumulative along-line distance
equals fraction * dist [0.25].
fffile.d
Reads the ASCII file ffile.d and places symbols at locations in
the file that matches locations along the decorated lines. Inexact
matches and points outside the region are skipped.
l|Lline1[,line2,…]
Give the coordinates of the end points for one or more
comma-separated straight line segments. Symbols will be placed
where these lines intersect the decorated lines. The format of
each line specification is start_lon/start_lat/stop_lon/stop_lat.
Both start_lon/start_lat and stop_lon/stop_lat can be replaced by
a 2-character key that uses the justification format employed in
pstext to indicate a point on the frame or center of the map,
given as [LCR][BMT]. L will interpret the point pairs as defining
great circles [Default is straight line].
n|Nn_symbol
Specifies the number of equidistant symbols for decorated lines
[1]. Upper case N starts placing symbols exactly at the start of
the line [Default centers them along the line]. N-1 places one
symbol at start, while N+1 places one symbol at the end of
decorated lines. Optionally, append /min_dist[c|i|p] to enforce
that a minimum distance separation between successive symbols is
enforced.
s|Sn_symbol
Same as n|Nn_symbol but implies that the input data are first to
be converted into a series of 2-point line segments before
plotting.
x|Xxfile.d
Reads the multisegment file xfile.d and places symbols at the
intersections between the decorated lines and the lines in
xfile.d. X will resample the lines first along great-circle arcs.
The optional symbolinfo controls the specifics of the symbol selection
and formatting and consists of a concatenated string made up of any of
the following control arguments:
+aangle
For symbols at a fixed angle, +an for line-normal, or +ap for
line-parallel [Default].
+d Turns on debug which will draw helper points and lines to
illustrate the workings of the decorated line setup.
+g[fill]
Sets the symbol fill [no fill].
+ndx[/dy]
Nudges the placement of symbols by the specified amount (append
c|i|p to specify the units). Increments are considered in the
coordinate system defined by the orientation of the line; use +N
to force increments in the plot x/y coordinates system [no
nudging].
+p[pen]
Draws the outline of symbols [Default is no outline]; optionally
specify pen for outline [Default is width = 0.25p, color = black,
style = solid].
+s<symbol><size>
Specifies the code and size of the decorative symbol.
+w Specifies how many (x,y) points will be used to estimate symbol
angles [Default is 10].
Note: By placing -S~ options in the segment header you can change the
decorated lines on a segment-by-segment basis.
-U[[just]/dx/dy/][c|label] (more …)
Draw GMT time stamp logo on plot.
-V[level] (more …)
Select verbosity level [c].
-W[pen][attr] (more …)
Set pen attributes for the outline of symbols.
-X[a|c|f|r][x-shift[u]]
-Y[a|c|f|r][y-shift[u]] (more …)
Shift plot origin.
-bi[ncols][t] (more …)
Select native binary input. [Default is the required number of columns given the
chosen settings].
-acol=name[…] (more …)
Set aspatial column associations col=name.
-dinodata (more …)
Replace input columns that equal nodata with NaN.
-e[~]”pattern” | -e[~]/regexp/[i] (more …)
Only accept data records that match the given pattern.
-f[i|o]colinfo (more …)
Specify data types of input and/or output columns.
-g[a]x|y|d|X|Y|D|[col]z[+|-]gap[u] (more …)
Determine data gaps and line breaks. The -g option is ignored if -S is set.
-h[i|o][n][+c][+d][+rremark][+rtitle] (more …)
Skip or produce header record(s).
-icols[+l][+sscale][+ooffset][,…] (more …)
Select input columns and transformations (0 is first column).
-:[i|o] (more …)
Swap 1st and 2nd column on input and/or output.
-p[x|y|z]azim[/elev[/zlevel]][+wlon0/lat0[/z0]][+vx0/y0] (more …)
Select perspective view.
-t[transp] (more …)
Set PDF transparency level in percent.
-^ or just -
Print a short message about the syntax of the command, then exits (NOTE: on Windows
just use -).
-+ or just +
Print an extensive usage (help) message, including the explanation of any
module-specific option (but not the GMT common options), then exits.
-? or no arguments
Print a complete usage (help) message, including the explanation of all options,
then exits.
UNITS
For map distance unit, append unit d for arc degree, m for arc minute, and s for arc
second, or e for meter [Default], f for foot, k for km, M for statute mile, n for nautical
mile, and u for US survey foot. By default we compute such distances using a spherical
approximation with great circles. Prepend - to a distance (or the unit is no distance is
given) to perform “Flat Earth” calculations (quicker but less accurate) or prepend + to
perform exact geodesic calculations (slower but more accurate).
VECTOR ATTRIBUTES
Several modifiers may be appended to the vector-producing options to specify the placement
of vector heads, their shapes, and the justification of the vector. Below, left and right
refers to the side of the vector line when viewed from the start point to the end point of
the segment:
+aangle sets the angle of the vector head apex [30].
+b places a vector head at the beginning of the vector path [none]. Optionally, append
t for a terminal line, c for a circle, a for arrow [Default], i for tail, A for plain
arrow, and I for plain tail. Further append l|r to only draw the left or right side of
this head [both sides].
+e places a vector head at the end of the vector path [none]. Optionally, append t for
a terminal line, c for a circle, a for arrow [Default], i for tail, A for plain arrow,
and I for plain tail. Further append l|r to only draw the left or right side of this
head [both sides].
+g-|fill turns off vector head fill (if -) or sets the vector head fill [Default fill
is used, which may be no fill].
+hshape sets the shape of the vector head (range -2/2). Default is controlled by
MAP_VECTOR_SHAPE [0].
+l draws half-arrows, using only the left side of specified heads [both sides].
+m places a vector head at the mid-point the vector path [none]. Append f or r for
forward or reverse direction of the vector [forward]. Optionally, append t for a
terminal line, c for a circle, or a for arrow head [Default]. Further append l|r to
only draw the left or right side of this head [both sides]. Cannot be combined with +b
or +e.
+nnorm scales down vector attributes (pen thickness, head size) with decreasing length,
where vectors shorter than norm will have their attributes scaled by length/norm [arrow
attributes remains invariant to length].
+oplon/plat specifies the oblique pole for the great or small circles. Only needed for
great circles if +q is given.
+p[-][pen] sets the vector pen attributes. If pen has a leading - then the head outline
is not drawn. [Default pen is used, and head outline is drawn]
+q means the input angle, length data instead represent the start and stop opening
angles of the arc segment relative to the given point.
+r draws half-arrows, using only the right side of specified heads [both sides].
+t[b|e]trim will shift the beginning or end point (or both) along the vector segment by
the given trim; append suitable unit. If the modifiers b|e are not used then trim may
be two values separated by a slash, which is used to specify different trims for the
two ends. Positive trims will shorted the vector while negative trims will lengthen it
[no trim].
In addition, all but circular vectors may take these modifiers:
+jjust determines how the input x,y point relates to the vector. Choose from beginning
[default], end, or center.
+s means the input angle, length are instead the x, y coordinates of the vector end
point.
Finally, Cartesian vectors may take these modifiers:
+zscale[unit] expects input dx,dy vector components and uses the scale to convert to
polar coordinates with length in given unit.
EXAMPLES
To plot circles (diameter = 0.1 cm) on a 6-inch-wide ternary diagram at the positions
listed in the file ternary.txt, with default annotations and gridline spacings, using the
specified labeling, tru
gmt psternary ternary.txt -R0/100/0/100/0/100 -JX6i -P -Xc -Baafg+l"Water component"+u" %" \
-Bbafg+l"Air component"+u" %" -Bcagf+l"Limestone component"+u" %" \
-B+givory+t"Example data from MATLAB Central" -Sc0.1c -Ct.cpt -Y2i -LWater/Air/Limestone > map.ps
SEE ALSO
gmt, gmt.conf, gmtcolors, psbasemap, psxy, psxyz
COPYRIGHT
2018, P. Wessel, W. H. F. Smith, R. Scharroo, J. Luis, and F. Wobbe