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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: DESCRIPTION:
# assetsHistPairsPlot Displays a bivariate histogram plot
################################################################################
assetsHistPairsPlot <-
function(x, bins = 30, method = c("square", "hex"), ...)
{
# A function implemented by Diethelm Wuertz
# Description:
# Displays bivariate Histogram Plot
# Arguments:
# x - timeSeries
# bins - histogram bins
# method - plot method
# Example:
# x <- 100 * as.timeSeries(data(LPP2005REC))[, c("SBI", "SPI")]
# assetsHistPairsPlot(x, bins = 20)
# assetsHistPairsPlot(x, bins = 20, method = "hex")
# FUNCTION:
# Match Arguments:
method <- match.arg(method)
# Check:
stopifnot(ncol(x) == 2)
# Histogram Plot:
X <- as.vector(x[, 1])
Y <- as.vector(x[, 2])
if (method == "square") {
ans <- squareBinning(x = X, y= Y, bins = bins)
} else if (method == "hex") {
ans <- hexBinning(x = X, y = Y, bins = bins)
}
# Plot:
plot(ans, ...)
# Return Value:
invisible(ans)
}
################################################################################
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