Provided by: plplot-doc_5.10.0-0ubuntu5_all 
NAME
plcont - Contour plot
SYNOPSIS
plcont(f, nx, ny, kx, lx, ky, ly, clevel, nlevel, pltr, pltr_data)
DESCRIPTION
Draws a contour plot of the data in f[nx][ny], using the nlevel contour levels specified by clevel. Only
the region of the array from kx to lx and from ky to ly is plotted out. A transformation routine pointed
to by pltr with a pointer pltr_data for additional data required by the transformation routine is used to
map indices within the array to the world coordinates. See the following discussion of the arguments and
the PLplot documentation for more information.
Redacted form: [PLEASE UPDATE! ONLY PERL INFO IS LIKELY CORRECT!] F95: plcont(f, kx, lx, ky, ly, clevel,
tr?) or plcont(f, kx, lx, ky, ly, clevel, xgrid, ygrid) Java: pls.cont(f, kx, lx, ky, ly, clevel, xgrid,
ygrid) Perl/PDL: plcont(f, kx, lx, ky, ly, clevel, pltr, pltr_data) Python: plcont2(f, kx, lx, ky, ly,
clevel)
This function is used in examples 9,14,16,22.
ARGUMENTS
f (const PLFLT * const *, input)
Pointer to a vectored two-dimensional array containing data to be contoured.
nx, ny (PLINT, input)
Physical dimensions of array f.
kx, lx (PLINT, input)
Range of x indices to consider.
ky, ly (PLINT, input)
Range of y indices to consider.
clevel (const PLFLT *, input)
Pointer to array specifying levels at which to draw contours.
nlevel (PLINT, input)
Number of contour levels to draw.
pltr (void (*) (PLFLT, PLFLT, PLFLT *, PLFLT *, PLPointer) , input)
Pointer to function that defines transformation between indices in array f and the world
coordinates (C only). Transformation functions are provided in the PLplot library: pltr0(3plplot)
for identity mapping, and pltr1(3plplot) and pltr2(3plplot) for arbitrary mappings respectively
defined by one- and two-dimensional arrays. In addition, user-supplied routines for the
transformation can be used as well. Examples of all of these approaches are given in the PLplot
documentation. The transformation function should have the form given by any of pltr0(3plplot),
pltr1(3plplot), or pltr2(3plplot). Note that unlike plshades(3plplot) and similar PLplot functions
which have a pltr argument, plcont requires that a transformation function be provided in the C
interface. Leaving pltr NULL will result in an error.
pltr_data (PLPointer, input)
Extra parameter to help pass information to pltr0(3plplot), pltr1(3plplot), pltr2(3plplot), or
whatever routine that is externally supplied.
AUTHORS
Many developers (who are credited at http://plplot.sourceforge.net/credits.php) have contributed to PLplot over its long history.
SEE ALSO
PLplot documentation at http://plplot.sourceforge.net/documentation.php. February, 2014 PLCONT(3plplot)