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# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received A copy of the GNU Library General
# Public License along with this library; if not, write to the
# Free Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
################################################################################
# FUNCTION: SLIDER MENU:
# .subStars Creates a sub stars plot
################################################################################
.subStars <-
function(x, keyOffset = c(0, 0), loc = NULL, palette = NULL)
{
# Description:
# Creates a sub stars plot
# Details:
# this is the stars::graphics() function modified in such a
# way, that it works together with the subplot builtin.
# FUNCTION:
# Palette:
if (is.null(palette)) palette = palette(rainbow(12, s = 0.6, v = 0.75))
# Graph Frame:
xCol = ncol(x)
yCol = nrow(x)
NY = NX = ceiling(sqrt(xCol))
if (NX * NY == xCol) NY = NY + 1
if (is.null(loc)) {
for (nx in 1:NY) for (ny in 1:NX) loc = rbind(loc, c(nx, ny))
loc = loc[1:xCol, ]
loc[, 2] = NY + 1 - loc[, 2]
}
# Stars - Settings:
x = t(x)
locations = loc
len = 0.4
key.loc = c(NX + 1, 1) + keyOffset
xlim = c(1, NX + 0.5)
ylim = c(0, NY + 1)
op <- par("xpd")
on.exit(par(op))
par(xpd = TRUE)
labels = dimnames(x)[[1]]
key.labels = dimnames(x)[[2]]
n.loc <- nrow(x)
n.seg <- ncol(x)
xloc <- locations[, 1]
yloc <- locations[, 2]
angles <- seq.int(0, 2 * pi, length.out = n.seg + 1)[-(n.seg + 1)]
x <- apply(x, 2,
function(x) (x - min(x, na.rm = TRUE))/diff(range(x, na.rm = TRUE)))
mx <- max(x <- x * len)
if (is.null(xlim)) xlim <- range(xloc) + c(-mx, mx)
if (is.null(ylim)) ylim <- range(yloc) + c(-mx, mx)
deg <- pi/180
plot(0, type = "n", xlim = xlim, ylim = ylim, main = "",
sub = "", xlab = "", ylab = "", asp = 1, axes = FALSE)
s.x <- xloc + x * rep.int(cos(angles), rep.int(n.loc, n.seg))
s.y <- yloc + x * rep.int(sin(angles), rep.int(n.loc, n.seg))
aangl <- c(angles, if (TRUE) 2 * pi else pi)
for (i in 1:n.loc) {
px <- py <- numeric()
for (j in 1:n.seg) {
k <- seq.int(from = aangl[j], to = aangl[j + 1], by = 1 * deg)
px <- c(px, xloc[i], s.x[i, j], x[i, j] * cos(k) + xloc[i], NA)
py <- c(py, yloc[i], s.y[i, j], x[i, j] * sin(k) + yloc[i], NA)
}
polygon(px, py, col = 1:n.seg, lwd = 0.25, lty = 1)
}
text(xloc, yloc - mx + 0.04, labels, cex = 0.7, font = 2, adj = c(0.5, 1))
key.x <- len * cos(angles) + key.loc[1]
key.y <- len * sin(angles) + key.loc[2]
px <- py <- numeric()
for (j in 1:n.seg) {
k <- seq.int(from = aangl[j], to = aangl[j + 1], by = 1 * deg)
px <- c(px, key.loc[1], key.x[j], len * cos(k) + key.loc[1], NA)
py <- c(py, key.loc[2], key.y[j], len * sin(k) + key.loc[2], NA)
}
polygon(px, py, col = 1:n.seg, lwd = 0.25, lty = 1)
lab.angl <- angles + (angles[2] - angles[1])/2
label.x <- 1.15 * len * cos(lab.angl) + key.loc[1]
label.y <- 1.15 * len * sin(lab.angl) + key.loc[2]
for (k in 1:n.seg) {
text.adj <- c(if (lab.angl[k] < 90 * deg || lab.angl[k] >
270 * deg) 0 else if (lab.angl[k] > 90 * deg &&
lab.angl[k] < 270 * deg) 1 else 0.5, if (lab.angl[k] <=
90 * deg) (1 - lab.angl[k]/(90 * deg))/2 else if (lab.angl[k] <=
270 * deg) (lab.angl[k] - 90 * deg)/(180 * deg) else 1 -
(lab.angl[k] - 270 * deg)/(180 * deg))
text(label.x[k], label.y[k], labels = key.labels[k],
cex = 0.7, adj = text.adj)
}
# Return Value:
invisible(locations)
}
################################################################################
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