1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
|
<HTML>
<HEAD>
<TITLE>pswiggle</TITLE>
</HEAD>
<BODY>
<H1>pswiggle</H1>
<HR>
<PRE>
<!-- Manpage converted by man2html 3.0.1 -->
pswiggle - Plot anomaly along track on a map
</PRE>
<H2>SYNOPSIS</H2><PRE>
<B>pswiggle</B> <I>xyz</I><B>_</B><I>files</I> <B>-J</B><I>parameters</I> <B>-R</B><I>west/east/south/north</I>[<B>r</B>]
<B>-Z</B><I>scale</I> [ <B>-A</B><I>azimuth</I> ] [ <B>-B</B><I>tickinfo</I> ] [ <B>-C</B><I>center</I> ] [ <B>-D</B><I>gap</I>
] [ <B>-E</B><I>azimuth/elevation</I> ] [ <B>-G</B><I>fillrgb</I> ] [ <B>-H</B>[<I>nrec</I>] ] [
<B>-I</B><I>fix</I><B>_</B><I>az</I> ] [ <B>-K</B> ] [ <B>-M</B>[<I>flag</I>] ] [ <B>-N</B> ] [ <B>-O</B> ] [ <B>-P</B> ] [
<B>-S</B>[<B>x</B>]<I>lon0/lat0/length</I>[<I>units</I>] ] [ <B>-T</B><I>track</I><B>_</B><I>pen</I> ] [
<B>-U</B>[<I>/dx/dy/</I>][<I>label</I>] ] [ <B>-V</B> ] [ <B>-W</B><I>wiggle</I><B>_</B><I>pen</I> ] [ <B>-X</B><I>x-shift</I>
] [ <B>-Y</B><I>y-shift</I> ] [ <B>-c</B><I>copies</I> ] [ <B>-:</B> ] [ <B>-bi</B>[<B>s</B>][<I>n</I>] ]
</PRE>
<H2>DESCRIPTION</H2><PRE>
<B>pswiggle</B> 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 perpen
dicular to the distance axis. The user may set a preferred
positive anomaly plot direction, and if the positive nor
mal 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 <I>PostScript</I> code is written to
standard output.
<I>files</I> List one or more file-names. If no files are given,
<B>pswiggle</B> will read standard input.
<B>-J</B> 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 .<A HREF="gmtdefaults.html">gmtdefaults</A>, but this can be
overridden on the command line by appending the c,
i, or m to the scale/width value.
<B>CYLINDRICAL</B> <B>PROJECTIONS:</B>
<B>-Jc</B><I>lon0/lat0/scale</I> (Cassini)
<B>-Jj</B><I>lon0/scale</I> (Miller)
<B>-Jm</B><I>scale</I> (Mercator - Greenwich and Equator as ori
gin)
<B>-Jm</B><I>lon0/lat0/scale</I> (Mercator - Give meridian and
standard parallel)
<B>-Joa</B><I>lon0/lat0/azimuth/scale</I> (Oblique Mercator -
point and azimuth)
<B>-Job</B><I>lon0/lat0/lon1/lat1/scale</I> (Oblique Mercator -
two points)
<B>-Joc</B><I>lon0/lat0/lonp/latp/scale</I> (Oblique Mercator -
point and pole)
<B>-Jq</B><I>lon0/scale</I> (Equidistant Cylindrical Projection
(Plate Carree))
<B>-Jt</B><I>lon0/scale</I> (TM - Transverse Mercator, with Equa
tor as y = 0)
<B>-Ju</B><I>zone/scale</I> (UTM - Universal Transverse Mercator)
<B>-Jy</B><I>lon0/lats/scale</I> (Basic Cylindrical Projection)
<B>AZIMUTHAL</B> <B>PROJECTIONS:</B>
<B>-Ja</B><I>lon0/lat0/scale</I> (Lambert).
<B>-Je</B><I>lon0/lat0/scale</I> (Equidistant).
<B>-Jf</B><I>lon0/lat0/horizon/scale</I> (Gnomonic).
<B>-Jg</B><I>lon0/lat0/scale</I> (Orthographic).
<B>-Js</B><I>lon0/lat0/</I>[<I>slat/</I>]<I>scale</I> (General Stereographic)
<B>CONIC</B> <B>PROJECTIONS:</B>
<B>-Jb</B><I>lon0/lat0/lat1/lat2/scale</I> (Albers)
<B>-Jd</B><I>lon0/lat0/lat1/lat2/scale</I> (Equidistant)
<B>-Jl</B><I>lon0/lat0/lat1/lat2/scale</I> (Lambert)
<B>MISCELLANEOUS</B> <B>PROJECTIONS:</B>
<B>-Jh</B><I>lon0/scale</I> (Hammer)
<B>-Ji</B><I>lon0/scale</I> (Sinusoidal)
<B>-Jk</B>[<B>f|s</B>]<I>lon0/scale</I> (Eckert IV (f) and VI (s))
<B>-Jn</B><I>lon0/scale</I> (Robinson)
<B>-Jr</B><I>lon0/scale</I> (Winkel Tripel)
<B>-Jv</B><I>lon0/scale</I> (Van der Grinten)
<B>-Jw</B><I>lon0/scale</I> (Mollweide)
<B>NON-GEOGRAPHICAL</B> <B>PROJECTIONS:</B>
<B>-Jp</B>[<B>a</B>]<I>scale</I>[<I>/origin</I>] (polar (theta,r) coordinates,
optional <B>a</B> for azimuths and offset theta [0])
<B>-Jx</B><I>x-scale</I>[<B>l|p</B><I>pow</I>][<I>/y-scale</I>[<B>l|p</B><I>pow</I>]] (Linear, log,
and power scaling)
More details can be found in the <B><A HREF="psbasemap.html">psbasemap</A></B> man
pages.
<B>-R</B> <I>west,</I> <I>east,</I> <I>south,</I> and <I>north</I> specify the Region of
interest. To specify boundaries in degrees and min
utes [and seconds], use the dd:mm[:ss] format.
Append <B>r</B> if lower left and upper right map coordi
nates are given instead of wesn.
<B>-Z</B> Gives anomaly scale in data-units/distance-unit.
</PRE>
<H2>OPTIONS</H2><PRE>
No space between the option flag and the associated argu
ments.
<B>-A</B> Sets the preferred positive azimuth. Positive wig
gles will "gravitate" towards that direction.
<B>-B</B> Sets map boundary tickmark intervals. See <B><A HREF="psbasemap.html">psbasemap</A></B>
[0].
<B>-D</B> Means there is a data gap if 2 consecutive points
are more than <I>gap</I> distance units apart. For longi
tude/latitude data <I>gap</I> is in km, else it is in the
user's units.'
<B>-E</B> Sets the viewpoint's azimuth and elevation
[180/90]'
<B>-G</B> Set fill of positive wiggles. [Default is black]
Specify the shade (0-255) or color (r/g/b), or
<B>-Gp</B><I>dpi/pattern</I>, where <I>pattern</I> gives the number of
the built-in pattern (1-90) OR the name of a Sun
1-, 8-, or 24-bit raster file. <I>dpi</I> sets the reso
lution of the image. For 1-bit rasters: use <B>-GP</B> for
inverse video, or append <B>:F</B><I>r/g/b</I>[<B>B</B>[<I>r/g/b</I>]] to spec
ify fore- and background colors (use <I>r/g/b</I> = - for
transparency). See <B><A HREF="GMT.html">GMT</A></B> Cookbook & Technical Refer
ence Appendix E for information on individual pat
terns.
<B>-H</B> Input file(s) has Header record(s). Number of
header records can be changed by editing your .gmt
defaults file. If used, <B><A HREF="GMT.html">GMT</A></B> default is 1 header
record.
<B>-I</B> Set a fixed azimuth projection for wiggles [Default
uses track azimuth, but see <B>-A</B>].
<B>-K</B> More <I>PostScript</I> code will be appended later
[Default terminates the plot system].
<B>-M</B> Multiple segment file. Segments are separated by a
record whose first character is <I>flag</I>. [Default is
'>'].
<B>-N</B> Paint negative wiggles instead of positive
[Default].
<B>-O</B> Selects Overlay plot mode [Default initializes a
new plot system].
<B>-P</B> Selects Portrait plotting mode [<B><A HREF="GMT.html">GMT</A></B> Default is
Landscape, see gmtdefaults to change this].
<B>-S</B> Draws a simple vertical scale centered on
<I>lon0/lat0</I>. Use <B>-Sx</B> to specify cartesian coordinates
instead. <I>length</I> is in z units, append unit name
for labeling
<B>-T</B> Draw track [Default is no track]. Append pen
<B>-U</B> 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 <B>c</B> (which will
plot the command string.). The GMT parameters
UNIX_TIME and UNIX_TIME_POS can affect the appear
ance; see the <B><A HREF="gmtdefaults.html">gmtdefaults</A></B> man page for details.
<B>-V</B> Selects verbose mode, which will send progress
reports to stderr [Default runs "silently"].
<B>-W</B> Draw wiggle outline [Default is no outline]. Append
pen attributes to use [Defaults: width = 1, color =
0/0/0, texture = solid].
<B>-X</B> <B>-Y</B> Shift origin of plot by (<I>x-shift,y-shift</I>). Prepend
<B>a</B> for absolute coordinates; the default (<B>r</B>) will
reset plot origin.
<B>-:</B> Toggles between (longitude,latitude) and (lati
tude,longitude) input/output. [Default is (longi
tude,latitude)]. Applies to geographic coordinates
only.
<B>-c</B> Specifies the number of plot copies. [Default is 1]
<B>-bi</B> Selects binary input. Append <B>s</B> for single precision
[Default is double]. Append <I>n</I> for the number of
columns in the binary file(s). [Default is 3 input
columns].
</PRE>
<H2>EXAMPLES</H2><PRE>
To plot the magnetic anomaly stored in the file track.xym
along track @ 1000 nTesla/cm (after removing a mean value
of 32000 Tesla), 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, try
pswiggle track.xym <B>-R</B>-20/10/-80/-60 <B>-JS</B>0/90/15<B>c</B> <B>-Z</B>1000 <B>-B</B>5
<B>-P</B> <B>-G</B>255/0/0 <B>-T</B>0.25<B>p</B>/0/0/255 <B>-S</B>1000 <B>-V</B> > track_xym.ps
</PRE>
<H2>BUGS</H2><PRE>
Sometimes the (x,y) coordinates are not printed with
enough significant digits, so the local perpendicular to
the track swings around a lot. To see if this is the prob
lem, you should do this:
awk '{ if (NR > 1) print atan2(y-$1, x-$2); y=$1; x=$2; }'
yourdata.xyz | more
(note that output is in radians; on some machines you need
gmtset D_FORMAT %.12lg
awk '{ print NR, $0 }' yourdata.xyz | filter1d <B>-Fb</B>5 <B>-N</B>4/0
> smoothed.xyz
and plot this data set instead.
</PRE>
<H2>SEE ALSO</H2><PRE>
<I>gmt</I>(l), <I><A HREF="filter1d.html">filter1d</A></I>(l), <I><A HREF="psbasemap.html">psbasemap</A></I>(l), <I><A HREF="splitxyz.html">splitxyz</A></I>(l)
</PRE>
<HR>
<ADDRESS>
Man(1) output converted with
<a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a>
</ADDRESS>
</BODY>
</HTML>
<body bgcolor="#ffffff">
|
