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plmeridians

PLMERIDIANS(3plplot)						    PLplot API						      PLMERIDIANS(3plplot)

NAME

       plmeridians - Plot latitude and longitude lines.

SYNOPSIS

       plmeridians(mapform, dlong, dlat, minlong, maxlong, minlat, maxlat)

DESCRIPTION

       Displays latitude and longitude on the current plot.  The lines are plotted in the current color and line style.

       Redacted form:  General: plmeridians(mapform, dlong, dlat, minlong, maxlong, minlat, maxlat) F95, Java, Perl/PDL, Python: Not implemented?

       This function is used in example 19.

ARGUMENTS

       mapform (void (*) (PLINT, PLFLT *, PLFLT *), input)
	      A  user  supplied function to transform the coordinate  longitudes and latitudes to a plot coordinate system.   By using this trans-
	      form, we can change from a longitude,  latitude coordinate to a polar stereographic project, for	example.   Initially,  x[0]..[n-1]
	      are  the longitudes and y[0]..y[n-1]  are the corresponding latitudes.  After the call to mapform(), x[]	and y[] should be replaced
	      by the corresponding plot coordinates.   If no transform is desired, mapform can be replaced by NULL.

       dlong (PLFLT, input)
	      The interval in degrees at which the longitude lines are to be plotted.

       dlat (PLFLT, input)
	      The interval in degrees at which the latitude lines are to be plotted.

       minlong (PLFLT, input)
	      The value of the longitude on the left side of the plot.	The value of minlong must be less than	the  value  of	maxlong,  and  the
	      quantity maxlong-minlong must be less than or equal to 360.

       maxlong (PLFLT, input)
	      The value of the longitude on the right side of the plot.

       minlat (PLFLT, input)
	      The  minimum  latitude  to be plotted on the background.	 One can always use -90.0 as the boundary outside the plot window  will be
	      automatically eliminated.  However, the program will be  faster if one can reduce the size of the background plotted.

       maxlat (PLFLT, input)
	      The maximum latitudes to be plotted on the background.   One can always use 90.0 as the boundary outside the plot  window   will	be
	      automatically eliminated.

AUTHORS

       Geoffrey  Furnish  and  Maurice LeBrun wrote and maintain PLplot.  This man page was automatically generated from the DocBook source of the
       PLplot documentation, maintained by Alan W. Irwin and Rafael Laboissiere.

SEE ALSO

       PLplot documentation at http://plplot.sourceforge.net/resources.

								   August, 2012 					      PLMERIDIANS(3plplot)

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