## NAME

           gmtdefaults - To list current GMT defaults

## SYNOPSIS

           gmtdefaults -D[u|s] | -L

## DESCRIPTION

           gmtdefaults  lists the GMT parameter defaults if the option -D is used.
           There are three ways to change some of the settings: (1) Use  the  com-
           mand  gmtset,  (2) use any texteditor to edit the file .gmtdefaults4 in
           your home or current directory (if you do not have this file, run  gmt-
           defaults  -D  > ~/.gmtdefaults4 to get one with the system default set-
           tings), or (3) overrid any parameter by specifying one or more --PARAM-
           ETER=VALUE  statements on the commandline of any GMT command (PARAMETER
           and VALUE are any combination listed below). The first two options  are
           permanent  changes until explicitly changed back, while the last option
           is emphemeral and only applies to the single GMT command that  received
           the  override.   GMT can provide default values in US or SI units. This
           choice is determined by the contents of  the  gmt.conf  file  in  GMT’s
           share directory.

           -D     Print  the  system GMT defaults to standard output. Append u for
                  US defaults or s for SI defaults. [-D alone gives current choice
                  in gmt.conf].

           -L     Print the user’s currently active defaults to standard output.

                  Your  currently active defaults come from the .gmtdefaults4 file
                  in the current working directory,  if  present;  else  from  the
                  .gmtdefaults4 file in your home directory, if present; else from
                  the system defaults set at the time GMT was compiled.

## GMT PARAMETERS

           The following is a list of the parameters that  are  user-definable  in
           GMT.  The parameter names are always given in UPPER CASE. The parameter
           values are case-insensitive unless otherwise noted. The system defaults
           are given in brackets [ for SI (and US) ]. Those marked * can be set on
           the command line as well (the corresponding option is given  in  paren-
           theses).  Note  that  default  distances and lengths below are given in
           both cm or inch; the chosen default depends on your choice  of  default
           unit  (see  MEASURE_UNIT). You can explicitly specify the unit used for
           distances and lengths by appending c (cm), i (inch), m  (meter),  or  p
           (points).  When no unit is indicated the value will be assumed to be in
           the unit  set  by  MEASURE_UNIT.   Note  that  the  printer  resolution
           DOTS_PR_INCH  is always the number of dots or pixels per inch.  Several
           parameters take only TRUE or FALSE.

           ANNOT_MIN_ANGLE
                  If the angle between the map boundary and the  annotation  base-
                  line  is  less than this minimum value (in degrees), the annota-
                  tion is not plotted (this may occur for certain oblique  projec-
                  tions.) Give a value in the range 0-90. [20]

           ANNOT_MIN_SPACING
                  If  an  annotation  would be plotted less than this minimum dis-
                  tance from its closest neighbor, the annotation is  not  plotted
                  (this may occur for certain oblique projections.) [0]

           ANNOT_FONT_PRIMARY
                  Font  used  for  upper  annotations,  etc.  [Helvetica]. Specify
                  either the font number or the font name (case  sensitive!).  The
                  39 available fonts are:
                          0 Helvetica
                          1 Helvetica-Bold
                          2 Helvetica-Oblique
                          3 Helvetica-BoldOblique
                          4 Times-Roman
                          5 Times-Bold
                          6 Times-Italic
                          7 Times-BoldItalic
                          8 Courier
                          9 Courier-Bold
                          10 Courier-Oblique
                          11 Courier-BoldOblique
                          12 Symbol
                          13 AvantGarde-Book
                          14 AvantGarde-BookOblique
                          15 AvantGarde-Demi
                          16 AvantGarde-DemiOblique
                          17 Bookman-Demi
                          18 Bookman-DemiItalic
                          19 Bookman-Light
                          20 Bookman-LightItalic
                          21 Helvetica-Narrow
                          22 Helvetica-Narrow-Bold
                          23 Helvetica-Narrow-Oblique
                          24 Helvetica-Narrow-BoldOblique
                          25 NewCenturySchlbk-Roman
                          26 NewCenturySchlbk-Italic
                          27 NewCenturySchlbk-Bold
                          28 NewCenturySchlbk-BoldItalic
                          29 Palatino-Roman
                          30 Palatino-Italic
                          31 Palatino-Bold
                          32 Palatino-BoldItalic
                          33 ZapfChancery-MediumItalic
                          34 ZapfDingbats
                          35 Ryumin-Light-EUC-H
                          36 Ryumin-Light-EUC-V
                          37 GothicBBB-Medium-EUC-H
                          38 GothicBBB-Medium-EUC-V

           ANNOT_FONT_SIZE_PRIMARY
                  Font size (> 0) in points for map annotations. [14]

           ANNOT_FONT_SECONDARY
                  Font   to   use   for   time  axis  secondary  annotations.  See
                  ANNOT_FONT_PRIMARY for available fonts [Helvetica].

           ANNOT_FONT_SIZE_SECONDARY
                  Font size (> 0) for time axis secondary  annotations  in  points
                  [16].

           ANNOT_OFFSET_PRIMARY
                  Distance  from  end of tickmark to start of annotation [0.2c (or
                  0.075i)]. A negative offset will place the annotation inside the
                  map border.

           ANNOT_OFFSET_SECONDARY
                  Distance  from base of primary annotation to the top of the sec-
                  ondary annotation [0.2c (or 0.075i)] (Only applies to time  axes
                  with both primary and secondary annotations).

           BASEMAP_AXES
                  Sets which axes to draw and annotate. Case sensitive: Upper case
                  means both draw and annotate, lower case means draw  axis  only.
                  [WESN].

           BASEMAP_FRAME_RGB
                  Color  used  to  draw  map  boundaries  and annotations.  Give a
                  red/green/blue triplet, with each element in  the  0-255  range.
                  [0/0/0] (black).

           BASEMAP_TYPE
                  Choose  between  plain  and  fancy  (thick boundary, alternating
                  black/white frame; append + for rounded corners)  [fancy].   For
                  some map projections (e.g., Oblique Mercator), plain is the only
                  option even if fancy is set as default.  In general, fancy  only
                  applies  to  situations  where  the projected x and y directions
                  parallel the lon and lat directions (e.g.,  rectangular  projec-
                  tions, polar projections).

           CHAR_ENCODING
                  Names  the  eight bit character set being used for text in files
                  and in command line parameters. This allows GMT to  ensure  that
                  the  PostScript  output  generates the correct characters on the
                  plot.. Choose from Standard, Standard+,  ISOLatin1,  ISOLatin1+,
                  and  ISO-8859-x  (where  x  is in the ranges 1-10 or 13-15). See
                  Appendix F for details [ISOLatin1+ (or Standard+)].

           COLOR_BACKGROUND
                  Color used for the background of images (i.e., when z  <  lowest
                  colortable  entry).   Give  a  red/green/blue triplet, with each
                  element in the 0-255 range. [0/0/0] (black)

           COLOR_FOREGROUND
                  Color used for the foreground of images (i.e., when z >  highest
                  colortable  entry).   Give  a  red/green/blue triplet, with each
                  element in the 0-255 range. [255/255/255] (white)

           COLOR_IMAGE
                  Selects which operator to use when  rendering  bit-mapped  color
                  images.  Due  to  the  lack  of  the colorimage operator in some
                  PostScript implementations, GMT offers 2 different options:

                          adobe (Adobe’s colorimage definition)  [Default].
                          tiles (Plot image as many individual rectangles).

           COLOR_MODEL
                  Selects if color palette files  contain  rgb  values  (r,g,b  in
                  0-255 range) or HSV values (h in 0-360, s,v in 0-1 range) [rgb].

           COLOR_NAN
                  Color used for the non-defined areas of images (i.e., where z ==
                  NaN).   Give  a red/green/blue triplet, with each element in the
                  0-255 range. [128/128/128] (gray)

           D_FORMAT
                  Output format (C language printf syntax) to be used when  print-
                  ing  double  precision  floating  point numbers.  For geographic
                  coordinates, see OUTPUT_DEGREE_FORMAT. [%lg].

           DEGREE_SYMBOL
                  Determines what symbol is used to plot the degree symbol on geo-
                  graphic  map  annotations.  Choose  between ring, degree, colon,
                  none [ring].

           DOTS_PR_INCH
                  Resolution of the plotting device (dpi). Note that in  order  to
                  be  as  compact  as possible, GMT PostScript output uses integer
                  formats only so the resolution should be set depending  on  what
                  output device you are using. E.g, using 300 and sending the out-
                  put to a Linotype 300 phototypesetter (2470 dpi) will  not  take
                  advantage of the extra resolution (i.e., positioning on the page
                  and line thicknesses are still only done in steps of 1/300 inch;
                  of course, text will look smoother) [300].

           ELLIPSOID
                  The (case sensitive) name of the ellipsoid used for the map pro-
                  jections [WGS-84]. Choose among

                  WGS-84 1984 World Geodetic System [Default]
                  OSU91A 1991 Ohio State University
                  OSU86F 1986 Ohio State University
                  Engelis 1985 Goodard Earth Models
                  SGS-85 1985 Soviet Geodetic System
                  MERIT-83 1983 United States Naval Observatory
                  GRS-80 1980 International Geodetic Reference System
                  Lerch 1979 For geoid modelling
                  ATS77 1977 Average Terrestrial System, Canada Maritime provinces
                  IAG-75 1975 International Association of Geodesy
                  Indonesian 1974 Applies to Indonesia
                  WGS-72 1972 World Geodetic System
                  NWL-10D 1972 Naval Weapons Lab (Same as WGS-72)
                  South-American 1969 Applies to South America
                  Fischer-1968 1968 Used by NASA for Mercury program
                  Modified-Mercury-1968 1968 Same as Fischer-1968
                  GRS-67 1967 International Geodetic Reference System
                  International-1967 1967 Worldwide use
                  WGS-66 1966 World Geodetic System
                  NWL-9D 1966 Naval Weapons Lab (Same as WGS-66)
                  Australian 1965 Applies to Australia
                  APL4.9 1965 Appl. Physics
                  Kaula 1961 From satellite tracking
                  Hough 1960 Applies to the Marshall Islands
                  WGS-60 1960 World Geodetic System
                  Fischer-1960 1960 Used by NASA for Mercury program
                  Mercury-1960 1960 Same as Fischer-1960
                  Modified-Fischer-1960 1960 Applies to Singapore
                  Fischer-1960-SouthAsia 1960 Same as Modified-Fischer-1960
                  Krassovsky 1940 Used in the (now former) Soviet Union
                  War-Office 1926 Developed by G. T. McCaw
                  International-1924 1924 Worldwide use
                  Hayford-1909 1909 Same as the International 1924
                  Helmert-1906 1906 Applies to Egypt
                  Clarke-1880 1880 Applies to most of Africa, France
                  Clarke-1880-Arc1950 1880 Modified Clarke-1880 for Arc 1950
                  Clarke-1880-IGN 1880 Modified Clarke-1880 for IGN
                  Clarke-1880-Jamaica 1880 Modified Clarke-1880 for Jamaica
                  Clarke-1880-Merchich 1880 Modified Clarke-1880 for Merchich
                  Clarke-1880-Palestine 1880 Modified Clarke-1880 for Palestine
                  Andrae 1876 Applies to Denmark and Iceland
                  Clarke-1866 1866 Applies to North America, the Philippines
                  Clarke-1866-Michigan 1866 Modified Clarke-1866 for Michigan
                  Struve 1860 Friedrich Georg Wilhelm Struve
                  Clarke-1858 1858 Clarke’s early ellipsoid
                  Airy 1830 Applies to Great Britain
                  Airy-Ireland 1830 Applies to Ireland in 1965
                  Modified-Airy 1830 Same as Airy-Ireland
                  Bessel 1841 Applies to Central Europe, Chile, Indonesia
                  Bessel-Schwazeck 1841 Applies to Namibia
                  Bessel-Namibia 1841 Same as Bessel-Schwazeck
                  Bessel-NGO1948 1841 Modified Bessel for NGO 1948
                  Everest-1830 1830 India, Burma, Pakistan, Afghanistan, Thailand
                  Everest-1830-Kalianpur   1830  Modified  Everest  for  Kalianpur
                  (1956)
                  Everest-1830-Kertau 1830 Modified Everest for Kertau, Malaysia &
                  Singapore
                  Everest-1830-Timbalai  1830 Modified Everest for Timbalai, Sabah
                  Sarawak
                  Everest-1830-Pakistan 1830 Modified Everest for Pakistan
                  Walbeck 1819 First least squares solution by Finnish astronomer
                  Plessis 1817 Old ellipsoid used in France
                  Delambre 1810 Applies to Belgium
                  CPM 1799 Comm. des Poids et Mesures, France
                  Maupertius 1738 Really old ellipsoid used in France
                  Sphere 1980 The mean radius in GRS-80 (for spherical/plate  tec-
                  tonics applications)

                  Note that for some global projections, GMT may default to GRS-80
                  Sphere regardless of ellipsoid actually chosen. A  warning  will
                  be  given  when this happens. If a different ellipsoid name than
                  those mentioned here is given, GMT will attempt to open  a  file
                  with  that  name  in  the  current  directory, and read a single
                  record that contains the ellipsoid name,  year,  major-axis  (in
                  m), minor-axis (in m), and flattening (f) from the first record,
                  where the fields must be separated by white-space (not  commas).
                  This way a custom ellipsoid (e.g., those used for other planets)
                  may be used. A negative flattening means  GMT  will  recalculate
                  flattening from the two radii.

           FIELD_DELIMITER
                  This  setting determines what character will separate ASCII out-
                  put data columns written by GMT. Choose from tab, space,  comma,
                  and none [tab].

           FRAME_PEN
                  Thickness  of  pen  used to draw plain map frame in dpi units or
                  points (append p) [1.25p].

           FRAME_WIDTH
                  Width (> 0) of  map  borders  for  fancy  map  frame  [0.2c  (or
                  0.075i)].

           GLOBAL_X_SCALE
                  Global  x-scale  (> 0) to apply to plot-coordinates before plot-
                  ting. Normally used to shrink the entire output down  to  fit  a
                  specific height/width [1.0].

           GLOBAL_Y_SCALE
                  Same, but for y-coordinates [1.0].

           GRID_CROSS_SIZE_PRIMARY
                  Size (>= 0) of grid cross at lon-lat intersections. 0 means draw
                  continuous gridlines instead [0].

           GRID_PEN_PRIMARY
                  Pen thickness used to draw grid lines in  dpi  units  or  points
                  (append p) [0.25p].

           GRID_CROSS_SIZE_SECONDARY
                  Size  (>= 0) of grid cross at secondary lon-lat intersections. 0
                  means draw continuous gridlines instead [0].

           GRID_PEN_SECONDARY
                  Pen thickness used to draw grid lines in  dpi  units  or  points
                  (append p) [0.5p].

           GRIDFILE_SHORTHAND
                  If  TRUE, all gridfile names are examined to see if they use the
                  file extension shorthand discussed in Section 4.17  of  the  GMT
                  Technical  Reference and Cookbook.  If FALSE, no filename expan-
                  sion is done [FALSE].

           HEADER_FONT
                  Font to use when plotting headers.  See  ANNOT_FONT_PRIMARY  for
                  available fonts [Helvetica].

           HEADER_FONT_SIZE
                  Font size (> 0) for header in points [36].

           HEADER_OFFSET
                  Distance  from  top  of  axis  annotations  (or  axis  label, if
                  present) to base of plot header [0.5c (or 0.1875i)].

           HSV_MIN_SATURATION
                  Minimum saturation (0-1) assigned for  most  negative  intensity
                  value [1.0].

           HSV_MAX_SATURATION
                  Maximum  saturation  (0-1)  assigned for most positive intensity
                  value [0.1].

           HSV_MIN_VALUE
                  Minimum value (0-1) assigned for most negative  intensity  value
                  [0.3].

           HSV_MAX_VALUE
                  Maximum  value  (0-1) assigned for most positive intensity value
                  [1.0].

           INPUT_CLOCK_FORMAT
                  Formatting template that indicates how an input clock string  is
                  formatted.  This  template  is then used to guide the reading of
                  clock strings in data fields. To properly decode 12-hour clocks,
                  append  am  or pm (or upper case) to match your data records. As
                  examples, try hh:mm, hh:mm:ssAM, etc. [hh:mm:ss].

           INPUT_DATE_FORMAT
                  Formatting template that indicates how an input date  string  is
                  formatted.  This  template  is then used to guide the reading of
                  date strings in data fields. You may  specify  either  Gregorian
                  calendar format or ISO week calendar format. Gregorian calendar:
                  Use any combination of yyyy (or yy for 2-digit years; if so  see
                  Y2K_OFFSET_YEAR),  mm  (or  o  for abbreviated month name in the
                  current time language), and dd, with or without delimiters.  For
                  day-of-year data, use jjj instead of mm and/or dd.  Examples can
                  be ddmmyyyy, yy-mm-dd,  dd-o-yyyy,  yyyy/dd/mm,  yyyy-jjj,  etc.
                  ISO  Calendar:  Expected template is yyyy[-]W[-]ww[-]d, where ww
                  is ISO week and d is ISO week day. Either template must be  con-
                  sistent,  e.g.,  you  cannot specify months if you don’t specify
                  years. Examples are yyyyWwwd, yyyy-Www, etc. [yyyy-mm-dd].

           INTERPOLANT
                  Determines if linear (linear), Akima’s spline (akima), or  natu-
                  ral  cubic  spline (cubic) should be used for 1-D interpolations
                  in various programs [akima].

           IO_HEADER * (-H)
                  Specifies whether input/output ASCII files have header record(s)
                  or not [FALSE].

           N_HEADER_RECS
                  Specifies  how  many header records to expect if -H is turned on
                  [1].

           LABEL_FONT
                  Font to use when plotting labels below axes. See ANNOT_FONT_PRI-
                  MARY for available fonts [Helvetica].

           LABEL_FONT_SIZE
                  Font size (> 0) for labels in points [24].

           LABEL_OFFSET
                  Distance  from  base  of axis annotations to the top of the axis
                  label [0.3c (or 0.1125i)].

           LINE_STEP
                  Determines the maximum length (> 0) of individual straight line-
                  segments when drawing arcuate lines [0.025c (or 0.01i)]

           MAP_SCALE_FACTOR
                  Changes  the default map scale factor used for the Polar Stereo-
                  graphic [0.9996], UTM [0.9996], and Transverse Mercator [1] pro-
                  jections  in  order  to minimize areal distortion. Provide a new
                  scale-factor or leave as default.

           MAP_SCALE_HEIGHT
                  Sets the height (> 0) on the map of the map scale bars drawn  by
                  various programs [0.2c (or 0.075i)].

           MEASURE_UNIT
                  Sets  the  unit  length.  Choose between cm, inch, m, and point.
                  [cm]. Note that, in GMT, one point is defined as 1/72 inch  (the
                  PostScript  definition),  while  it  is often defined as 1/72.27
                  inch in the typesetting industry. There is no universal  defini-
                  tion.

           N_COPIES * (-c)
                  Number of plot copies to make [1].

           OBLIQUE_ANNOTATION
                  This  integer  is  a  sum of 6 bit flags (most of which only are
                  relevant for oblique projections): If bit 1 is set (1),  annota-
                  tions will occur wherever a gridline crosses the map boundaries,
                  else longitudes will be annotated on the lower and upper  bound-
                  aries  only,  and  latitudes  will  be annotated on the left and
                  right boundaries only. If bit 2 is set (2), then longitude anno-
                  tations  will be plotted horizontally. If bit 3 is set (4), then
                  latitude annotations will be plotted horizontally.  If bit 4  is
                  set  (8),  then oblique tickmarks are extended to give a projec-
                  tion equal to the specified tick_length.  If bit 5 is set  (16),
                  tickmarks will be drawn normal to the border regardless of grid-
                  line angle.  If bit 6 is set  (32),  then  latitude  annotations
                  will be plotted parallel to the border.  To set a combination of
                  these, add up the values in parentheses. [1].

           OUTPUT_CLOCK_FORMAT
                  Formatting template that indicates how an output clock string is
                  to be formatted. This template is then used to guide the writing
                  of clock strings in data fields. To use a floating point  format
                  for  the  smallest  unit  (e.g. seconds), append .xxx, where the
                  number of x indicates the  desired  precision.  If  no  floating
                  point  is  indicated  then  the  smallest specified unit will be
                  rounded off to nearest integer. For 12-hour clocks,  append  am,
                  AM,  a.m.,  or  A.M.  (GMT will replace a|A with p|P for pm). If
                  your template starts with a leading hyphen (-) then each integer
                  item (y,m,d) will be printed without leading zeros (default uses
                  fixed  width  formats).  As  examples,  try   hh:mm,   hh.mm.ss,
                  hh:mm:ss.xxxx, hha.m., etc. [hh:mm:ss].

           OUTPUT_DATE_FORMAT
                  Formatting  template that indicates how an output date string is
                  to be formatted. This template is then used to guide the writing
                  of date strings in data fields. You may specify either Gregorian
                  calendar format or ISO week calendar format. Gregorian calendar:
                  Use  any combination of yyyy (or yy for 2-digit years; if so see
                  Y2K_OFFSET_YEAR), mm (or o for abbreviated  month  name  in  the
                  current  time language), and dd, with or without delimiters. For
                  day-of-year data, use jjj instead of mm and/or dd.  As examples,
                  try  yy/mm/dd,  yyyy=jjj,  dd-o-yyyy, dd-mm-yy, yy-mm, etc.  ISO
                  Calendar: Expected template is yyyy[-]W[-]ww[-]d,  where  ww  is
                  ISO  week and d is ISO week day. Either template must be consis-
                  tant, e.g., you cannot  specify  months  if  you  don’t  specify
                  years.  As  examples,  try  yyyyWww,  yy-W-ww-d,  etc.  If  your
                  template starts with a leading hyphen (-) then each integer item
                  (y,m,d)  will  be  printed  without  leading zeros (default uses
                  fixed width formats) [yyyy-mm-dd].

           OUTPUT_DEGREE_FORMAT
                  Formatting template that indicates how  an  output  geographical
                  coordinate  is  to  be  formatted. This template is then used to
                  guide the writing of geographical coordinates  in  data  fields.
                  The   template   is   in   general   of   the   form  [+|-]D  or
                  [+|-]ddd[:mm[:ss]][.xxx][F]. The various terms have the  follow-
                  ing purpose:

                          +|- + means output longitude in the 0 to 360 range
                                  - means output longitude in the -360 to 0 range
                                  If not given, use the -180 to +180 range
                          D Use D_FORMAT for floating point degrees.
                          ddd Fixed format integer degrees
                          : delimiter
                          mm Fixed format integer arc minutes
                          ss Fixed format integer arc seconds
                          .xxx  Floating fraction of previous integer field, fixed
                  width.
                          F Encode sign using WESN suffix

                  The default is +D.

           PAGE_COLOR
                  Sets the color of the imaging background, i.e., the paper.  Give
                  a  red/green/blue triplet, with each element in the 0-255 range.
                  [255/255/255] (white).

           PAGE_ORIENTATION * (-P)
                  Sets the orientation of the page. Choose portrait  or  landscape
                  [landscape].

           PAPER_MEDIA
                  Sets  the  physical  format  of the current plot paper [A4]. The
                  following formats (and their widths and heights in  points)  are
                  recognized (Additional site-specific formats may be specified in
                  the  gmtmedia.d  file  in  $GMTHOME/share;  see  that  file  for
                  details):

                          Media width height
                          A0 2380 3368
                          A1 1684 2380
                          A2 1190 1684
                          A3 842 1190
                          A4 595 842
                          A5 421 595
                          A6 297 421
                          A7 210 297
                          A8 148 210
                          A9 105 148
                          A10 74 105
                          B0 2836 4008
                          B1 2004 2836
                          B2 1418 2004
                          B3 1002 1418
                          B4 709 1002
                          B5 501 709
                          archA 648 864
                          archB 864 1296
                          archC 1296 1728
                          archD 1728 2592
                          archE 2592 3456
                          flsa 612 936
                          halfletter 396 612
                          note 540 720
                          letter 612 792
                          legal 612 1008
                          11x17 792 1224
                          ledger 1224 792

                  For a completely custom format (e.g., for large format plotters)
                  you may also specify Custom_WxH, where W and H  are  in  points.
                  To  force the printer to request a manual paper feed, append ’-’
                  to the media name, e.g., A3- will require the user to  insert  a
                  A3  paper  into  the printer’s manual feed slot. To indicate you
                  are making an EPS file, append ’+’ to the media name. Then,  GMT
                  will attempt to issue a tight bounding box [Default Bounding Box
                  is the paper dimension].

           PLOT_CLOCK_FORMAT
                  Formatting template that indicates how an output clock string is
                  to  be  plotted. This template is then used to guide the format-
                  ting of clock strings in plot annotations. See OUTPUT_CLOCK_FOR-
                  MAT for details. [hh:mm:ss].

           PLOT_DATE_FORMAT
                  Formatting  template that indicates how an output date string is
                  to be plotted. This template is then used to guide the  plotting
                  of  date  strings  in  data  fields.  See OUTPUT_DATE_FORMAT for
                  details. In addition, you may use a single o instead of  mm  (to
                  plot month name) and u instead of W[-]ww to plot "Week ##". Both
                  of these text strings will be affected by the TIME_LANGUAGE set-
                  ting. [yyyy-mm-dd].

           PLOT_DEGREE_FORMAT
                  Formatting  template  that  indicates how an output geographical
                  coordinate is to be plotted. This template is then used to guide
                  the  plotting  of  geographical  coordinates in data fields. See
                  OUTPUT_DEGREE_FORMAT for details. In addition, you can append  A
                  which plots the absolute value of the coordinate. The default is
                  +ddd:mm:ss. Not all items may be plotted as this depends on  the
                  annotation interval.

           PS_COLOR
                  Determines whether PostScript output should use RGB or CMYK when
                  specifying color. Select from rgb or cmyk [rgb].

           PSIMAGE_FORMAT
                  Determines whether images created in PostScript should use  hex-
                  adecimal  (i.e.,  ascii)  or  binary format. The latter takes up
                  only half as much space and executes faster but may  choke  some
                  printers,  especially  those off serial ports. Select hex or bin
                  [hex].

           TICK_LENGTH
                  The length of a tickmark. Normally, tickmarks are drawn  on  the
                  outside of the map boundaries. To select interior tickmarks, use
                  a negative tick_length [0.2c (or 0.075i)].

           TICK_PEN
                  The pen thickness to be used  for  tickmarks  in  dpi  units  or
                  points (append p) [0.5p].

           TIME_FORMAT_PRIMARY
                  Controls  how  primary month-, week-, and weekday-names are for-
                  matted. Choose among full, abbreviated, and  character.  If  the
                  leading  f,  a,  or  c  are replaced with F, A, and C the entire
                  annotation will be in upper case.

           TIME_FORMAT_SECONDARY
                  Controls how secondary month-, week-, and weekday-names are for-
                  matted.  Choose  among  full, abbreviated, and character. If the
                  leading f, a, or c are replaced with F,  A,  and  C  the  entire
                  annotation will be in upper case.

           TIME_EPOCH
                  This  parameter is active only when TIME_SYSTEM is set to OTHER.
                  It is a string of the form  yyyy-mm-ddThh:mm:ss  (Gregorian)  or
                  yyyy-Www-ddThh:mm:ss  (ISO) indicating the value of the calendar
                  and clock at the origin (zero point) of relative time units.

           TIME_IS_INTERVAL
                  Used when input calendar data should be truncated  and  adjusted
                  to the middle of the relevant interval. In the following discus-
                  sion, the unit u can be one of these  time  units:  (y  year,  o
                  month,  u  ISO  week,  d  day,  h hour, m minute, and c second).
                  TIME_IS_INTERVAL can have any of the following three values:  1.
                  OFF  [Default]. No adjustment, time is decoded as given. 2. +nu.
                  Activate interval adjustment for input by truncate  to  previous
                  whole  number  of  n units and then center time on the following
                  interval. 3. -nu. Same, but center time on the  previous  inter-
                  val.  For  example,  with  TIME_IS_INTERVAL = +1o, an input data
                  string   like   1999-12   will   be    interpreted    to    mean
                  1999-12-15T12:00:00.0  (exactly  middle  of  December), while if
                  TIME_IS_INTERVAL = OFF then that date  is  interpreted  to  mean
                  1999-12-1T00:00:00.0 (start of December).

           TIME_INTERVAL_FRACTION
                  Determines  if partial intervals at the start and end of an axis
                  should be annotated.  If  the  range  of  the  partial  interval
                  exceeds  the specified fraction of the normal interval stride we
                  will place the  annotation  centered  on  the  partial  interval
                  [0.5].

           TIME_LANGUAGE
                  Language  to use when plotting calendar items such as months and
                  days. Select from:
                          BR Brazilian Portuguese
                          CN1 Simplified Chinese
                          CN2 Traditional Chinese
                          DE German
                          DK Danish
                          EH Basque
                          ES Spanish
                          FI Finnish
                          FR French
                          GR Greek
                          HU Hungarian
                          IE Irish
                          IL Hebrew
                          IT Italian
                          JP Japanese
                          NL Dutch
                          NO Norwegian
                          PL Polish
                          PT Portuguese
                          RU Russian
                          SE Swedish
                          TO Tongan
                          TR Turkish
                          UK British English
                          US US English

                  If  your  language  is  not  supported,   please   examine   the
                  $GMTHOME/share/time/us.d  file  and  make a similar file. Please
                  submit it to the GMT Developers for official inclusion.

           TIME_SYSTEM
                  Determines what the time epoch relative time refers to and  what
                  the  units  are.  Choose  from  one  of the preset systems below
                  (epoch and units are indicated):
                          JD Julian Date, -4713-11-25T12:00:00 d
                          MJD Modified Julian Date, 1858-11-27T00:00:00 d
                          J2000 2000-01-01T00:00:00 d
                          S1985 1985-01-01T00:00:00 c
                          UNIX 1970-01-01T00:00:00 c
                  or specify OTHER and supply your own  TIME_EPOCH  and  TIME_UNIT
                  settings [J2000].

           TIME_UNIT
                  This  parameter is active only when TIME_SYSTEM is set to OTHER,
                  and specifies the units of relative time data. Choose y  (year),
                  d (day), h (hour), m (minute), or c (second).

           TIME_WEEK_START
                  When weeks are indicated on time axes, this parameter determines
                  the first day of the week  for  Gregorian  calendars.  (The  ISO
                  weekly  calendar  always begins weeks with Monday.)  [Monday (or
                  Sunday)].

           UNIX_TIME * (-U)
                  Specifies if a UNIX system time stamp should be plotted  at  the
                  lower left corner of the plot [FALSE].

           UNIX_TIME_POS * (-U)
                  Sets the position of the UNIX time stamp relative to the current
                  plots lower left corner [-2c/-2c (or -0.75i/-0.75i)].

           VECTOR_SHAPE
                  Determines the shape of the head of a  vector.  Normally  (i.e.,
                  for  vector_shape  = 0), the head will be triangular, but can be
                  changed to an arrow (1). Intermediate settings  gives  something
                  in between [0].

           VERBOSE * (-V)
                  Determines  if  GMT programs should display run-time information
                  or run silently [FALSE].

           X_AXIS_LENGTH
                  Sets the default length (> 0) of the x-axis [25c (or 9i)].

           Y_AXIS_LENGTH
                  Sets the default length (> 0) of the y-axis [15c (or 6i)].

           X_ORIGIN * (-X)
                  Sets the x-coordinate of the origin on the paper for a new  plot
                  [2.5c (or 1i)].  For an overlay, the default offset is 0.

           Y_ORIGIN * (-Y)
                  Sets  the y-coordinate of the origin on the paper for a new plot
                  [2.5c (or 1i)].  For an overlay, the default offset is 0.

           Y2K_OFFSET_YEAR
                  When 2-digit years are used to represent 4-digit years (see var-
                  ious  DATE_FORMATs),  Y2K_OFFSET_YEAR  gives the first year in a
                  100-year sequence. For example, if Y2K_OFFSET_YEAR is 1729, then
                  numbers  29  through  99  correspond to 1729 through 1799, while
                  numbers 00 through 28 correspond to 1800 through 1828. [1950].

           XY_TOGGLE * (-:)
                  Set if the first two columns of input and output  files  contain
                  (latitude,longitude)  or  (y,x) rather than the expected (longi-
                  tude,latitude) or (x,y). FALSE means we have (x,y) both on input
                  and output. TRUE means both input and output should be (y,x). IN
                  means only input has (y,x), while OUT means only  output  should
                  be (y,x). [FALSE].

           Y_AXIS_TYPE
                  Determines  if  the annotations for a y-axis (for linear projec-
                  tions) should be plotted horizontally (hor_text)  or  vertically
                  (ver_text) [hor_text].

## EXAMPLES

           To get a copy of the GMT parameter defaults in your home directory, run

           gmtdefaults -D > ~/.gmtdefaults4

           You may now change the settings by editing this file using a text  edi-
           tor of your choice, or use gmtset to change specified parameters on the
           command line.

## BUGS

           If you have typographical errors in your .gmtdefaults4 file(s), a warn-
           ing  message  will  be  issued,  and  the GMT defaults for the affected
           parameters will be used.

## SEE ALSO

           gmt(l), gmtset(l)

    GMT4.0                            1 Oct 2004                    GMTDEFAULTS(l)