Name: PGHI2D
Purpose: cross-sections through a 2D data array
Category: GRAPHICS
File: pgplot.src
Author: T.J. Pearson
Use: see description below.
Description:
SUBROUTINE PGHI2D (DATA, NXV, NYV, IX1, IX2, IY1, IY2, X, IOFF,
1 BIAS, CENTER, YLIMS)
INTEGER NXV, NYV, IX1, IX2, IY1, IY2
REAL DATA(NXV,NYV)
REAL X(IX2-IX1+1), YLIMS(IX2-IX1+1)
INTEGER IOFF
REAL BIAS
LOGICAL CENTER
Plot a series of cross-sections through a 2D data array.
Each cross-section is plotted as a hidden line histogram. The plot
can be slanted to give a pseudo-3D effect - if this is done, the
call to PGENV may have to be changed to allow for the increased X
range that will be needed.
Arguments:
DATA (input) : the data array to be plotted.
NXV (input) : the first dimension of DATA.
NYV (input) : the second dimension of DATA.
IX1 (input)
IX2 (input)
IY1 (input)
IY2 (input) : PGHI2D plots a subset of the input array DATA.
This subset is delimited in the first (x)
dimension by IX1 and IX2 and the 2nd (y) by IY1
and IY2, inclusively. Note: IY2 < IY1 is
permitted, resulting in a plot with the
cross-sections plotted in reverse Y order.
However, IX2 must be => IX1.
X (input) : the abscissae of the bins to be plotted. That is,
X(1) should be the X value for DATA(IX1,IY1), and
X should have (IX2-IX1+1) elements. The program
has to assume that the X value for DATA(x,y) is
the same for all y.
IOFF (input) : an offset in array elements applied to successive
cross-sections to produce a slanted effect. A
plot with IOFF > 0 slants to the right, one with
IOFF < 0 slants left.
BIAS (input) : a bias value applied to each successive cross-
section in order to raise it above the previous
cross-section. This is in the same units as the
data.
CENTER (input) : if .true., the X values denote the center of the
bins; if .false. the X values denote the lower
edges (in X) of the bins.
YLIMS (input) : workspace. Should be an array of at least
(IX2-IX1+1) elements.
Updates: Oct 16, 1998: JPT automatically extracted from source.