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NAME

       MPE_Draw_line -  Draws a line on an X11 display

SYNOPSIS

       #include "mpe.h"
       int MPE_Draw_line( handle, x1, y_1, x2, y_2, color )
       MPE_XGraph handle;
       int        x1, y_1, x2, y_2;
       MPE_Color  color;

INPUT PARAMETERS

       handle - MPE graphics handle
       x1,y_1 -  pixel  position  of one end of the line to draw.  Coordinates
              are upper-left origin (standard X11)
       x2,y_2 - pixel  position  of  the  other  end  of  the  line  to  draw.
              Coordinates are upper-left origin (standard X11)
       color  - Color index value.  See MPE_MakeColorArray .

              By  default,  the  colors  MPE_WHITE  ,  MPE_BLACK  ,  MPE_RED ,
              MPE_YELLOW , MPE_GREEN , MPE_CYAN ,  MPE_BLUE  ,  MPE_MAGENTA  ,
              MPE_AQUAMARINE  ,  MPE_FORESTGREEN  ,  MPE_ORANGE , MPE_VIOLET ,
              MPE_BROWN , MPE_PINK , MPE_CORAL and MPE_GRAY are defined.

NOTES FOR FORTRAN INTERFACE

       The  Fortran  interface  to  this  routine  is  different  from  its  C
       counterpart  and it has an additional argument, ierr, at the end of the
       argument list, i.e. the returned function value (the error code)  in  C
       interface  is returned as the additional argument in Fortran interface.
       The Fortran interface is invoked with the CALL statement.

       All MPI and MPE objects, MPI_Comm, MPE_XGraph  and  MPE_Color,  are  of
       type INTEGER in Fortran.

LOCATION

       mpe_graphics.c

                                   12/6/2001                  MPE_Draw_line(4)