idata
(PLFLT**, input)
A 2D array of values (intensities) to plot. Should have
dimensions idata[nx][ny].
nx, ny
(PLINT, input)
Dimensions of idata
xmin, xmax, ymin, ymax
(PLFLT, input)
Stretch image data to these Plot coordinates. idata[0][0]
corresponds to (xmin, ymin) and idata[nx - 1][ny - 1] corresponds
to (xmax, ymax).
zmin, zmax
(PLFLT, input)
Only data between zmin and zmax (inclusive) will be plotted.
valuemin, valuemax
(PLFLT, input)
The minimum and maximum data values to use for value to color
mappings. A datum equal to or less than valuemin will be
plotted with color 0.0, while a datum equal to or greater than
valuemax will be plotted with color 1.0. Data between valuemin
and valuemax map linearly to colors between 0.0 and 1.0.
pltr
(void (*) (PLFLT, PLFLT, PLFLT *, PLFLT *, PLPointer)
, input)
Pointer to function that defines a transformation between the data
in the array idata and
world coordinates. An input coordinate of
(0, 0) corresponds to the "top-left" corner of
idata while
(nx, ny) corresponds to the "bottom-right"
corner of idata . Some
transformation functions are provided in the PLplot library:
pltr0 for identity mapping, and pltr1 and pltr2 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 Section called Contour Plots from C in Chapter 3. The
transformation function should have the form given by any of
pltr0 , pltr1 , or pltr2 .
pltr_data
(PLPointer, input)
Extra parameter to help
pass information to pltr0 , pltr1 , pltr2 , or whatever routine
is externally supplied.
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