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

       This function is used in example 19.

ARGUMENTS

       mapform (PLMAPFORM_callback(3plplot), input)
              A user supplied function to transform the coordinate longitudes and latitudes to a plot coordinate
              system.  By  using  this transform, 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(3plplot), input)
              The interval in degrees at which the longitude lines are to be plotted.

       dlat (PLFLT(3plplot), input)
              The interval in degrees at which the latitude lines are to be plotted.

       minlong (PLFLT(3plplot), 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(3plplot), input)
              The value of the longitude on the right side of the plot.

       minlat (PLFLT(3plplot), 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(3plplot), 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

       Many developers (who are credited at http://plplot.org/credits.php) have contributed to PLplot  over  its
       long history.

SEE ALSO

       PLplot documentation at http://plplot.org/documentation.php.

                                                  October, 2024                             PLMERIDIANS(3plplot)