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DrawModuleAndAzimuthDistribution <- function (data_x, data_y, SVGf = 0)
{
# Plots a graphic of all the vectors from a common origin (0,0)
#
# Args:
# data_x : vector components (increments) over the X axis
# data_y : vector components (increments) over the Y axis
# SVG:
# 0: the plot is showed only un the graphic window
# 1: the plot is saved as SVG graphic
#
# Returns:
# Plot the graphic and/or save the graphic as SVG
#
if (SVGf == 1) {
SVGfiles <- list.files(path=getwd(), pattern=glob2rx("figure*.SVG"), ignore.case=TRUE)
nfiles = length(SVGfiles)
if (nfiles == 0) {
fileSVGname = "figure1.SVG"
}
else {
newnum = nfiles + 1
fileSVGname = paste("figure",newnum,".SVG", sep = "")
}
svg(fileSVGname, width= 8, height=8)
}
plot.new()
par(fg="white", mar=c(0,0,0,0))
#rectangular_vectors <- array(c(data_x, data_y), dim=c(length(data_x), 2))
num_data = length(data_x)
x = data_x
y = data_y
module = sqrt(x * x + y * y)
max_ = max(module) + 1
scale_factor = 24 / max_
d1 = round(max_ * scale_factor)
d2 = round(d1 * 0.75)
d3 = round(d1 * 0.50)
d4 = round(d1 * 0.25)
length_ = d1 + 10
center_x = 0
center_y = 0
plot(range(length_, -length_), range(length_, -length_), type = "n",
axes = FALSE, ann = FALSE)
DrawCircle(0, 0, d1, border = "black", lty = 1, lwd = 1)
DrawCircle(0, 0, d2, border = "black", lty = 1, lwd = 1)
DrawCircle(0, 0, d3, border = "black", lty = 1, lwd = 1)
DrawCircle(0, 0, d4, border = "black", lty = 1, lwd = 1)
# diagonal lines and labels
x1 = cos(ToRadians(45)) * d1
y1 = sin(ToRadians(45)) * d1
segments(-x1, -y1, x1, y1, col = "black", lwd = 2)
segments(x1, -y1, -x1, y1, col = "black", lwd = 2)
text(x1, y1, "45", adj = c(-0.25, -0.25), col = "black", cex = 1.25)
text(x1, -y1, "135", adj = c(-0.25, 1), col = "black", cex = 1.25)
text(-x1, y1, "315", adj = c(1.25, -0.25), col = "black", cex = 1.25)
text(-x1, -y1, "225", adj = c(1.25, 1.25), col = "black", cex = 1.25)
# vertical and horizontal lines and labels
segments(center_x, center_y - d1, center_x, center_y + d1, col = "black", lwd = 2)
segments(center_x + d1, center_y, center_x - d1, center_y, col = "black", lwd = 2)
# primary labels
text(center_x, center_y + d1, "0", adj = c(0.5,-1.0), cex = 1.25, col = "black")
text(center_x - d1, center_y, "270", adj = c(1.25, 0.25), cex = 1.25, col = "black")
text(center_x, center_y - d1, "180", adj = c(0.5, 2.0), cex = 1.25, col = "black")
text(center_x + d1, center_y, "90", adj = c(-0.5, 0.25), cex = 1.25, col = "black")
# scale labels
r1 = round(d1 / scale_factor)
r2 = round(d2 / scale_factor)
r3 = round(d3 / scale_factor)
r4 = round(d4 / scale_factor)
text(center_x, center_y + d1, r1, adj = c(-0.1,1.2), cex = 1, col = "black")
text(center_x, center_y + d2, r2, adj = c(-0.1,1.2), cex = 1, col = "black")
text(center_x, center_y + d3, r3, adj = c(-0.1,1.2), cex = 1, col = "black")
text(center_x, center_y + d4, r4, adj = c(-0.1,1.2), cex = 1, col = "black")
text(center_x, center_y - d1, r1, adj = c(1.1,-0.5), cex = 1, col = "black")
text(center_x, center_y - d2, r2, adj = c(1.1,-0.5), cex = 1, col = "black")
text(center_x, center_y - d3, r3, adj = c(1.1,-0.5), cex = 1, col = "black")
text(center_x, center_y - d4, r4, adj = c(1.1,-0.5), cex = 1, col = "black")
#text(center_x + d1, center_y, d1) # do not plot
text(center_x + d2, center_y, r2, adj = c(-0.1,-0.3), cex = 1, col = "black")
text(center_x + d3, center_y, r3, adj = c(-0.1,-0.3), cex = 1, col = "black")
text(center_x + d4, center_y, r4, adj = c(-0.1,-0.3), cex = 1, col = "black")
text(center_x - d1, center_y, r1, adj = c(-0.1,-0.3), cex = 1, col = "black")
text(center_x - d2, center_y, r2, adj = c(-0.1,-0.3), cex = 1, col = "black")
text(center_x - d3, center_y, r3, adj = c(-0.1,-0.3), cex = 1, col = "black")
text(center_x - d4, center_y, r4, adj = c(-0.1,-0.3), cex = 1, col = "black")
# vectors and mean vector
for (i in 1:(num_data)) {
arrows(center_x, center_y, data_x[i] * scale_factor,
data_y[i] * scale_factor, length = 0.0, code = 2,
col = "skyblue3", lwd = 1)
}
xmean = sum(data_x) / num_data
ymean = sum(data_y) / num_data
arrows(0, 0, xmean * scale_factor, ymean * scale_factor, length = 0.15, code = 0, col = "red",
lty = 1, lwd = 2)
# label and number of elements
labp = paste("Red line is the mean vector")
text(center_x - d1 - 3.5, center_y + d1 + 3.3, labels = labp, pos = 4, col = "black", cex = 1)
labp = paste("Sample size, n =",num_data)
text(center_x - d1 - 3.5, center_y + d1 + 1.3, labels = labp, pos = 4, col = "black", cex = 1)
if (SVGf == 1) {
dev.off()
print(paste("Plot has been saved as SVG graphic file '",fileSVGname,"' in",getwd()))
}
}
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