Name: GRAFMP  24
The routine GRAFMP plots a geographical axis system.
The call is:  CALL GRAFMP (XA, XE, XOR, XSTP, YA, YE, YOR, YSTP)
         or:  void graf3 (
                     float xa, float xe, float xor, float xstp, 
                     float ya, float ye, float yor, float ystp);
XA, XE        are the lower and upper limits of the X-axis.
XOR, XSTP     are the  first X-axis label  and the step  between
              labels.
YA, YE        are the lower and upper limits of the Y-axis.
YOR, YSTP     are the  first Y-axis label  and the step  between
              labels.
Notes:      - GRAFMP  must be  called  from level 1 and sets the
              level to 2.
            - The axes  must  be linear and scaled in  ascending
              order.  In general, X-axes must be scaled  between
              -180 and 180 degrees and Y-axes between -90 and 90
              degrees.
            - For  elliptical  projections,  the plotting  of an
              axis system will be suppressed.  This will also be
              done for azimuthal projections with YE - YA > 90.
            - The statement  CALL GRIDMP (I, J) overlays an axis
              system with a grid of longitude and latitude where
              I and J  are the number  of grid lines between la-
              bels in the X- and Y-direction.
Name: GRIDMP  24
The routine GRIDMP overlays an  axis system with a longitude and
latitude grid.
The call is:  CALL GRIDMP (I, J)                   level 1, 2, 3
         or:  void gridmp (int i, int j);
I, J          are the number of grid lines between labels in the
              X- and Y-direction.
Name: XAXMAP  24
The routine XAXMAP plots a secondary X-axis.
The call is:  CALL XAXMAP (A, B, OR, STEP, CSTR, NT, NY) level 2
         or:  void xaxmap (float a, float b, float or, 
                        float step, char *cstr, int nt, int ny);
A, B          are the lower and upper limits of the X-axis.
OR, STEP      are the first label and the step between labels.
CSTR          is a character string containing the axis name.
NT            indicates how ticks, labels  and the axis name are
              plotted.  If NT = 0, they are plotted  in a clock-
              wise direction.  If NT = 1,  they are plotted in a
              counter-clockwise direction.
NY            defines the horizontal  position  of the X-axis. A
              secondary  axis  must be located  inside  the axis
              system.
Name: YAXMAP  24
The routine YAXMAP plots a secondary Y-axis.
The call is:  CALL YAXMAP (A, B, OR, STEP, CSTR, NT, NX) level 2
         or:  void yaxmap (float a, float b, float or, 
                        float step, char *cstr, int nt, int nx);
A, B          are the lower and upper limits of the Y-axis.
OR, STEP      are the first label and the step between labels.
CSTR          is a character string containing the axis name.
NT            indicates how ticks,  labels and the axis name are
              plotted.  If NT = 0,  they are plotted in a clock-
              wise direction.  If NT = 1,  they are plotted in a
              counter-clockwise direction.
NX            defines  the  vertical  position  of the Y-axis. A
              secondary  axis  must be  located  inside the axis
              system.
Name: PROJCT  24
The routine PROJCT selects the geographical projection.
The call is:  CALL PROJCT (CTYPE)                        level 1
         or:  void projct (char *ctype);
CTYPE         is a character string defining the projection.
  = 'CYLI'    defines a cylindrical equidistant projection.
  = 'MERC'    selects the Mercator projection.
  = 'EQUA'    defines a cylindrical equal-area projection.
  = 'HAMM'    defines the elliptical projection of Hammer.
  = 'AITO'    defines the elliptical projection of Aitoff.
  = 'WINK'    defines the elliptical projection of Winkel.
  = 'SANS'    defines the elliptical Mercator-Sanson projection.
  = 'CONI'    defines a conical equidistant projection.
  = 'ALBE'    defines a conical equal-area projection (Albert).
  = 'CONF'    defines a conical conformal projection.
  = 'AZIM'    defines an azimuthal equidistant projection.
  = 'LAMB'    defines an azimuthal equal-area projection.
  = 'STER'    defines an azimuthal stereographic projection.
  = 'ORTH'    defines an azimuthal orthographic projection.
                                        Default: CTYPE = 'CYLI'.
Notes:      - For cylindrical equidistant projections,  the sca-
              ling parameters in GRAFMP must be in the range:
                         -540 <= XA <= XE <= 540
                         -180 <= YA <= YE <= 180
              For Mercator procektions:
                         -540 <= XA <= XE <= 540
                         - 85 <= YA <= YE <=  85
              For cylindrical equal-area projections:
                         -540 <= XA <= XE <= 540
                         - 90 <= YA <= YE <=  90
              For elliptical projections:
                         -180 <= XA <= XE <= 180
                         - 90 <= YA <= YE <=  90
              For conical projections:
                         -180 <= XA <= XE <= 180
                            0 <= YA <= YE <=  90  or
                         - 90 <= YA <= YE <=   0
              For azimuthal projections with  YE - YA > 90,  the
              hemisphere around the map pole is projected onto a
              circle. Therefore,  the hemisphere can be selected
              with the map pole. The plotting of the axis system
              will be  suppressed.
              If YE - YA <= 90, the part of the globe defined by
              the  axis scaling  is projected  onto a rectangle.
              The map pole will be set by GRAFMP to  ((XA+XE)/2,
              (YE+YA)/2).  The scaling parameters must be in the
              range:
                         -180 <= XA <= XE <= 180 and
                                 XE -  XA <= 180
                         - 90 <= YA <= YE <=  90
          -   For all projections except the default projection,
              longitude and latitude coordinates will be projec-
              ted  with the same scaling factor  for the X-  and
              Y-axis.  The scaling factor is  determined  by the
              scaling of the  Y-axis  while the  scaling  of the
              X-axis  is used  to centre the map.  The longitude
              (XA+XE)/2  always lies  in the centre  of the axis
              system.
Name: WORLD   24
The routine  WORLD plots coastlines and political borders in low
resolution.
The call is:  CALL WORLD                                 level 2
         or:  void world ();
Name: SHDMAP  24
The routine SHDMAP plots shaded continents.
The call is:  CALL SHDMAP (CMAP)                         level 2
         or:  void shdmap (char *cmap);
CMAP          is a character string defining the continent.
  = 'AFRI'    means Africa.
  = 'ANTA'    means the Antarctic.
  = 'AUST'    means Australia.
  = 'EURA'    means Europe and Asia.
  = 'NORT'    means North America.
  = 'SOUT'    means South America.
  = 'ALL'     means all continents.
Note:         Shading patterns  can be selected with  SHDPAT and
              MYPAT.  Colours can be defined with COLOR and SET-
              CLR.
Name: SHDEUR  24
The routine SHDEUR plots shaded European countries.
The call is:  CALL SHDEUR (IRAY, IPRAY, ICRAY, N)        level 2
         or:  void shdeur (int *iray, long *ipray, int *icray,
                                                         int n);
IRAY          is an integer array containing the countries to be
              shaded. IRAY can have the following values:
               1: Albania     13: Iceland        24: Portugal
               2: Andorra     14: Italy          25: Romania
               3: Belgium     15: Yugoslavia     26: Sweden
               4: Bulgaria    16: Liechtenstein  27: Switzerland
               5: Germany     17: Luxembourg     28: Spain
               6: Denmark     18: Malta          29: CSFR
               8: England/GB  19: Netherlands    30: Turkey
               9: Finland     20: North Ireland  31: USSR
              10: France      21: Norway         32: Hungary
              11: Greece      22: Austria
              12: Ireland     23: Poland
IPRAY         is an integer array containing shading patterns.
ICRAY         is an integer array containing colour numbers.
N             is the number of countries to be shaded.
Name: CURVMP  24
The routine  CURVMP  plots curves  through data points  or marks
them with symbols.
The call is:  CALL CURVMP (XRAY, YRAY, N)                level 2
         or:  void curvmp (float *xray, float *yray, int n);
XRAY, YRAY    are real arrays containing the data points.
N             is the number of data points.
Notes:      - CURVMP  is similar to  CURVE  except  that  only a
              linear interpolation can be used.
            - In general, a line between two points on the globe
              will not be projected as  a straight line.  There-
              fore,  CURVMP interpolates lines linearly by small
              steps.  An alternate plotting mode can be set with
              MAPMOD.
Name: MAPPOL  24
MAPPOL defines the map pole used for azimuthal projections.
The call is:  CALL MAPPOL (XPOL, YPOL)                   level 1
         or:  void mappol (float xpol, float ypol);
XPOL, YPOL    are the longitude and latitude  coordinates in de-
              grees where:
                         -180 <= XPOL <= 180 and
                         - 90 <= YPOL <=  90
                                               Default: (0., 0.)
Note:         For an  azimuthal  projection with  YE - YA <= 90,
              the map pole will be set by GRAFMP to  ((XA+XE)/2,
              (YA+YE)/2).
Name: MAPSPH  24
For an azimuthal projection with YE - YA > 90, DISLIN  automati-
cally projects a hemisphere around the map pole on a circle. The
hemisphere can be reduced using MAPSPH.
The call is:  CALL MAPSPH (XRAD)                         level 1
         or:  void mapshd (float xrad);
XRAD          defines the region  around the map pole  that will
              be projected onto a circle (0 < XRAD <= 90).
                                             Default: XRAD = 90.
Name: MAPREF  24
The routine MAPREF defines,  for conical projections,  two lati-
tudes where the cone intersects or touches the globe.
The call is:  CALL MAPREF (YLW, YUP)                     level 1
         or:  void mapref (float ylw, float yup); 
YLW, YUP      are the lower and upper latitudes where:
                      0 <= YLW <= YUP <= 90     or
                   - 90 <= YLW <= YUP <=  0
                           Default:  YLW = YA + 0.25 * (YE - YA)
                                     YUP = YA + 0.75 * (YE - YA)
Note:         YLW and YUP can have identical values and lie out-
              side of the axis scaling.
Name: MAPMOD  24
The routine  MAPMOD determines how data points will be connected
by CURVMP.
The call is:    CALL MAPMOD (CMODE)                level 1, 2, 3
         or:    void mapmod (char *cmode);
CMODE           is a  character  string  defining the connection
                mode.
  = 'STRAIGHT'  defines straight lines.
  = 'INTER'     means that lines will be interpolated linearly.
                                      Default:  CMODE = 'INTER'.
Name: POS2PT  24
The routine POS2PT converts map coordinates to plot coordinates.
The call is:  CALL POS2PT (XLONG, YLAT, XP, YP)       level 2, 3
         or:  void pos2pt (float xlong, float ylat, 
                                        float *xp, float *yp); 
XLONG, YLAT   are the map coordinates in degrees.
XP, YP        are the plot coordinates calculated by POS2PT.
Name: X2DPOS  24
The funtion X2DPOS converts map coordinates to plot coordinates.
The call is:  XP  = X2DPOS (XLONG, YLAT)              level 2, 3
         or:  float x2dpos (float xlong, float ylat);
XP            is the plot coordinate calculated by X2DPOS.
XLONG, YLAT   are the map coordinates in degrees.
Name: Y2DPOS  24
The funtion Y2DPOS converts map coordinates to plot coordinates.
The call is:  YP  = Y2DPOS (XLONG, YLAT)              level 2, 3
         or:  float y2dpos (float xlong, float ylat);
YP            is the plot coordinate calculated by Y2DPOS.
XLONG, YLAT   are the map coordinates in degrees.
