(z, nx, ny, kx, lx, ky, ly, clevel, nlevel, pltr, pltr_data);
Draws a contour plot of the data in
levels specified by
Only the region of the array from
lx and from
ly is plotted out. A
transformation routine pointed to by
with a pointer
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 Section called Contour and Shade Plots in Chapter 3 for
(PLFLT **, input)
Pointer to a vectored two-dimensional array containing data to
Physical dimensions of array
Range of x indices to consider.
Range of y indices to consider.
(PLFLT *, input)
Pointer to array specifying levels at which to draw contours.
Number of contour levels to draw.
(void (*) (PLFLT, PLFLT, PLFLT *, PLFLT *, PLPointer)
Pointer to function that defines transformation between indices
z and the
world coordinates (C only). Transformation functions are
provided in the PLplot library:
pltr0 for identity mapping, and
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 Section called Contour Plots from C in Chapter 3.
The transformation function should
have the form given by any of
Note that unlike
plshades and similar PLplot functions
which have a
argument, plcont requires that a transformation function be
provided in the C interface. Leaving
pltr NULL will result
in an error.
Extra parameter to help
pass information to
pltr2, or whatever routine
that is externally supplied.
Redacted form: [PLEASE UPDATE! ONLY PERL INFO IS LIKELY CORRECT!]
plcont(z, kx, lx, ky, ly, clevel, tr?) or
plcont(z, kx, lx, ky, ly, clevel, xgrid, ygrid)
pls.cont(z, kx, lx, ky, ly, clevel, xgrid, ygrid)
plcont(z, kx, lx, ky, ly, clevel, pltr, pltr_data)
plcont2(z, kx, lx, ky, ly, clevel)
This function is used in examples 9,14,16,22.