pswigglegmt - Online in the Cloud

PROGRAM:

NAME

pswiggle - Plot z = f(x,y) anomalies along tracks

SYNOPSIS

pswiggle [ table ] parameters west/east/south/north[/zmin/zmax][r] scale [ azimuth ] [
[p|s]parameters ] [ center ] [ [+|-|=]fill ] [ z|Zparameters ] [ fix_az ] [ ] [ ] [ -P ]
[ [x]lon0/lat0/length[/units] ] [ pen ] [ [just/dx/dy/][c|label] ] [ [level] ] [ pen ] [
x_offset ] [ y_offset ] [ -bi<binary> ] [ -ccopies ] [ -di<nodata> ] [ -f<flags> ] [
-g<gaps> ] [ -h<headers> ] [ -i<flags> ] [ -p<flags> ] [ -t<transp> ] [ -:[i|o] ]

Note: No space is allowed between the option flag and the associated arguments.

DESCRIPTION

pswiggle reads (x,y,z) triplets from files [or standard input] and plots z as a function
of distance along track. This means that two consecutive (x,y) points define the local
distance axis, and the local z axis is then perpendicular to the distance axis. The user
may set a preferred positive anomaly plot direction, and if the positive normal is outside
the plus/minus 90 degree window around the preferred direction, then 180 degrees are added
to the direction. Either the positive or the negative wiggle may be shaded. The resulting
PostScript code is written to standard output.

REQUIRED ARGUMENTS

-Jparameters (more ...)
Select map projection.

-R[unit]xmin/xmax/ymin/ymax[r] (more ...)
Specify the region of interest.

For perspective view p, optionally append /zmin/zmax. (more ...)

-Zscale
Gives anomaly scale in data-units/distance-unit.

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.

-Aazimuth
Sets the preferred positive azimuth. Positive wiggles will "gravitate" towards that
direction.

-B[p|s]parameters (more ...)
Set map boundary intervals.

-Ccenter
Subtract center from the data set before plotting [0].

-G[+|-|=]fill
Set fill shade, color or pattern for positive and/or negative wiggles [Default is
no fill]. Optionally, prepend + to fill positive areas (this is the default
behavior). Prepend - to fill negative areas. Prepend = to fill both positive and
negative areas with the same fill.

-Ifix_az
Set a fixed azimuth projection for wiggles [Default uses track azimuth, but see
-A].

-Jz|Zparameters (more ...)
Set z-axis scaling; same syntax as -Jx.

-K (more ...)
Do not finalize the PostScript plot.

-O (more ...)
Append to existing PostScript plot.

-P (more ...)
Select "Portrait" plot orientation.

-S[x]lon0/lat0/length[/units]
Draws a simple vertical scale centered on lon0/lat0. Use -Sx to specify cartesian
coordinates instead. length is in z units, append unit name for labeling.
FONT_ANNOT_PRIMARY is used as font.

-Tpen Draw track [Default is no track]. Append pen attributes to use [Defaults: width =
0.25p, color = black, style = solid].

-U[just/dx/dy/][c|label] (more ...)
Draw GMT time stamp logo on plot.

-V[level] (more ...)
Select verbosity level [c].

-Wpen

-bi[ncols][t] (more ...)
Select native binary input. [Default is 3 input columns].

-ccopies (more ...)
Specify number of plot copies [Default is 1].

-dinodata (more ...)
Replace input columns that equal nodata with NaN.

-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.

-h[i|o][n][+c][+d][+rremark][+rtitle] (more ...)
Skip or produce header record(s).

-icols[l][sscale][ooffset][,...] (more ...)
Select input columns (0 is first column).

-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.

-:[i|o] (more ...)
Swap 1st and 2nd column on input and/or output.

-^ or just -
Print a short message about the syntax of the command, then exits (NOTE: on Windows
use just -).

-+ 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 options, then
exits.

--version
Print GMT version and exit.

--show-datadir
Print full path to GMT share directory and exit.

EXAMPLES

To plot the magnetic anomaly stored in the file track.xym along track @ 1000 nTesla/cm
(after removing a mean value of 32000 nTesla), using a 15-cm-wide Polar Stereographic map
ticked every 5 degrees in Portrait mode, with positive anomalies in red on a blue track of
width 0.25 points, use

gmt pswiggle track.xym -R-20/10/-80/-60 -JS0/90/15c -Z1000 -B5 \
-C32000 -P -Gred -T0.25p,blue -S1000 -V > track_xym.ps

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