- ... 19881.1
- Version
1.0 was then informally released at the Lamont-Doherty Earth Observatory.
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- ...clock1.2
- Use standard
UNIX tools such as awk or perl to reformat files should
your date and clock components reside in separate columns.
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- ... colors1.3
- Used
to color the background, foreground, and Not-a-Number areas.
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- ... free2.1
- See GNU General Public Licence
(www.gnu.org/copyleft/gpl.html) for terms on
redistribution and modifications.
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- ... tools2.2
- The
tools can also be installed on other platforms (see Appendix L).
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- ...
writers2.3
- One public-domain RIP is ghostscript,
available from www.gnu.org.
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- ... column2.4
- Programs now also
allow for fast, binary multicolumn file i/o.
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- ... another2.5
- While the netCDF format is the default,
other formats are also possible, including user-defined formats.
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- ... inch)4.1
- PostScript definition.
In the typesetting industry a slighly different definition of point
(1/72.27 inch) is used.
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- ...
defaults4.2
- Choose between SI and US default units by modifying
gmt.conf in the GMT share directory.
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- ... directory4.3
- To remain backwards compatible with GMT 3.4.x
we will also look for .gmtdefaults but only if .gmtdefaults4
cannot be found.
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- ... reforms4.4
- The Gregorian Calendar
is a revision of the Julian Calendar which was instituted in a papal bull by Pope Gregory XIII in 1582. The reason for the calendar
change was to correct for drift in the dates of signifigant religious observations (primarily Easter) and to prevent further drift
in the dates. The important effects of the change were (a) Drop 10 days from October 1582 to realign the Vernal Equinox with 21 March,
(b) change leap year selection so that not all years ending in "00" are leap years, and (c) change the beginning of the year to
1 January from 25 March. Adoption of the new calendar was essentially immediate within Catholic countries. In the Protestant countries,
where papal authority was neither recognized not appreciated, adoption came more slowly.
England finally adopted the new calendar in 1752, with eleven days removed from September. The additional day came because the old and
new calendars disagreed on whether 1700 was a leap year, so the Julian calendar had to be adjusted by one more day.
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- ... coordinates.4.5
- While
UTM coordinates clearly refer to points on the Earth, in this context they are considered ``other''. Thus, when we
refer to ``geographical'' coordinates herein we imply longitude, latitude.
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- ... plot4.6
- However,
it is suppressed when a 3-D view is selected.
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- ... numbers4.7
- Please consult the man page for printf or any book on C.
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- ... mode4.8
- For historical reasons, the GMT Default is Landscape, see gmtdefaults to change this.
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- ... plots4.9
- Ensures that
boundary annotations do not fall off the page.
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- ... 0-14.10
- For an overview of color systems such as HSV, see Appendix I.
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- ... table4.11
- On most UNIX-type systems
you can find the file rgb.txt in /usr/X11R6/lib/X11 or thereabouts, or use the command showrgb.
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- ... rasterfiles4.12
- Convert other graphics formats to Sun ras format using
ImageMagick's convert program.
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- ... system4.13
- For CMYK the format obviously involves two extra columns.
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- ... [1987]6.1
- Snyder, J. P., 1987, Map Projections A Working Manual, U.S. Geological Survey Prof. Paper 1395.
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- ... voyage6.2
-
This is, however, not the shortest distance. It is given
by the great circle connecting the two points.
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- ... right6.3
- Robinson provided a table of
-coordinates for latitudes every 5. To project values
for intermediate latitudes one must interpolate the table.
Different interpolants may result in slightly different maps.
GMT uses the interpolant selected by the parameter INTERPOLANT
in the .gmtdefaults4 file.
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- ... bathymetry7.1
-
These data are available on CD-ROM from NGDC (www.ngdc.noaa.gov).
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- ... maps7.2
- These data are available on CD-ROM from NGDC (www.ngdc.noaa.gov).
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- ... field7.3
-
See http://topex.ucsd.edu/marine_grav/mar_grav.html.
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- ... URL7.4
- You can also use the utility curl
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- ... arrival7.5
- Pedants who wish to argue about the ``other''
arc going the long way should consider using it.
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- ... CoxA.1
- Simon.Cox@csiro.au
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- ... altimetryA.2
- For data bases,
see http://topex.ucsd.edu/marine_grav/mar_grav.html.
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- ... SmithA.3
- walter@raptor.grdl.noaa.gov
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- ... FeiglA.4
- Kurt.Feigl@cnes.fr
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- ... PatauA.5
- patau@ipgp.jussieu.fr
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- ... formatA.6
- These data are available on CD-ROM from NGDC
(www.ngdc.noaa.gov).
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- ... formatA.7
- These data are available on CD-ROM from NGDC
(www.ngdc.noaa.gov).
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- ... HenstockA.8
- Timothy.J.Henstock@soc.soton.ac.uk
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- ... ParkesA.9
- lloyd@must-have-coffee.gen.nz
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- ... plotC.1
- In contrast,
regular GMT PostScript files simply have
a %%BoundingBox that equal the size of the chosen paper.
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- ... GNUD.1
- www.gnu.org
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- ... RedatD.2
- http://sources.redhat.com/bzip2/index.html
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- ... availableD.3
- Required
with GMT_exe.zip
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- ... fileF.1
- If you chose
SI units during the installation then the default encoding is ISOLatin1+, otherwise it is Standard+.
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- ... printersH.1
- Note, however, that the -Q option in grdimage
will exercise a PostScript Level 3 feature called colormasking.
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- ... BracewellJ.1
- R. Bracewell, The Fourier Transform
and its Applications, McGraw-Hill, London, 444p., 1965.
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- ... ColoradoK.1
-
www.ngdc.noaa.gov
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- ... algorithmK.2
- Dougles, D.H., and T. K. Peucker,
1973, Algorithms for the reduction of the number of points
required to represent a digitized line or its caricature,
Canadian Cartographer, 10, 112-122.
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- ... optionK.3
- The full
and high resolution files are in separate archives because of their
size. Not all users may need these files as the intermediate data
set is better than the data provided with version 2.1.4.
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- ... platformsK.4
-
If you need complete polygons in a simpler format, see the article
on GSHHS (Wessel, P., and W. H. F. Smith, 1996, A Global, self-consistent, hierarchical, high-resolution shoreline database,
J. Geophys. Res. 101, 8741-8743).
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- ...
MicrosoftL.1
- Microsoft Services for UNIX is formerly known as Interix, in the distant past known as OpenNT.
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- ... MachTenL.2
- www.tenon.com
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- ... pageL.3
- sources.redhat.com/cygwin
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- ...SFUL.4
- See www.microsoft.com/Windows/sfu for details.
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- ...DJGPPL.5
- See www.gnu.org for details.
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- ... EarthO.1
- or whatever
planet we are dealing with.
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- ... IslandsO.2
- Travel times were calculated using Geoware's
travel time calculator, ttt.
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