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CGMAP_CONTINENTS

CGMAP_CONTINENTS
  Provides a simple wrapper to the MAP_CONTINENTS command in IDL that can be used
  to draw map continental outlines in a device and color independent way with
  Coyote Graphics programs.

Categories


    Graphics, Map Projections
   

Examples


    To display a map of the Cuba and Haiti::
        cgMap_Set, /Mercator, Limit=[5.0, -95, 35.0, -55.0]
        cgMap_Continents, Background='dodger blue', /Continents, /Fill, Color='tan'
        cgMap_Continents, /Countries, /USA, Color='navy', /Continents
     

Keywords


    addcmd: in, optional, type=boolean, default=0
        If this keyword is set, the object is added to the resizeable graphics
        window, cgWindow. Note that a map projection command must be
        added to the window before this command is added to be effective.
    background: in, optional, type=string
        The name of the background color. A polygon of this color is drawn
        in the map space set up by the map projection before continents and
        other items are drawn.
    coasts: in, optional, type=boolean, default=0
        Set this keyword if you want coasts to be drawn. This keyword is ignored if using FILENAME.
    color: in, optional, type=string, default='opposite'
        The name of the drawing color for the program.
    continents: in, optional, type=boolean
        Set this keyword if you want continental outlines to be drawn. This will be
        set automatically if COASTS, COUNTRIES, RIVERS, AND USA keywords are all set
        to zero. This keyword is ignored if using FILENAME.
    countries: in, optional, type=boolean, default=0
        Set this keyword to draw political boundaries.
    fill_continents: in, optional, type=boolean, default=0
        Set this keyword to draw filled polygons rather than outlines. If the value is
        2, the continents are filled with lines rather than colors.
    hires: in, optional, type=boolean, default=0
        Set this keyword to use the high-resolution data supplied with IDL for MAP_CONTINENTS.
        This keyword is ignored if using FILENAME.
    limits: in, optional, type=fltarr(4)
        Set to a four-element vector, [Latmin, LonMin, LatMax, LonMax] that describes the
        limit rectangle. Only plot line segments that pass through this rectangle.
    linestyle: in, optional, type=integer, default=0
        Set to the type of linestyle in drawing outlines. Set solid lines by default.
    map_structure: in, optional, type=struct/object
        Set this keyword to a map structure as returned by Map_Proj_Init or to a map
        coordinate object (i.e., cgMap) from which a map structure can be obtained.
    mlinestyle:
        This keyword depreciated in favor of LINESTYLE keyword.
    mlinethick:
        This keyword depreciated in favor of THICK keyword.
    orientation: in, optional, type=float default=0.0
        Set this keyword to the counterclockwise angle in degrees from horizontal that
        the line fill should be drawn. Only applies if the FILL_CONTINENTS keyword is 2.
    rivers: in, optional, type=boolean, default=0
        Set this keyword if you wish to draw rivers. This keyword is ignored if using FILENAME.
    spacing: in, optional, type=float, default=0.5
        Set this keyword to the spacing, in centimeters, for a line fill. This keyword only has
        effect if the FILL_CONTINENTS keyword is set to 2.
    t3d: in, optional, type=boolean, default=0
        Set this graphics keyword if you wish to draw outlines use the T3D transformation matrix.
        This keyword is ignored if using FILENAME.
    thick: in, optional, type=integer, default=!P.Thick
        Set this keyword to the thickness of the lines that are drawn.
    usa: in, optional, type=boolean, default=0
        Set this keyword if you wish do draw United States state boundaries. This keyword is
        ignored if using FILENAME.
    zvalue: in, optional, type=float, default=0.0
        Set this keyword to the ZVALUE where the outlines should be drawn. Set to 0 by default.
        This keyword is ignored if using FILENAME.

Author


    FANNING SOFTWARE CONSULTING::
      David W. Fanning
      1645 Sheely Drive
      Fort Collins, CO 80526 USA
      Phone: 970-221-0438
      E-mail: david@idlcoyote.com
      Coyote's Guide to IDL Programming: http://www.idlcoyote.com

History


    Change History::
      Written by David W. Fanning, 7 November 2011.
      Added an ERASE=0 to the /NOGRAPHICS keyword on the Draw method call to cgMap. 27 Dec 2011. DWF
      Changed the default line thickness to !P.Thick to better support PostScript files. 28 Dec 2011. DWF.
      Modified slightly to allow a three-element byte array to be used as the COLOR. 18 April 2012. DWF.
      Added a BACKGROUND keyword. 31 Aug 2012. DWF.
       

Copyright


    Copyright (c) 2011-2012, Fanning Software Consulting, Inc.



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