/usr/share/ray/scripts/plot-library-distribution.R is in ray-extra 2.3.1-5.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | #!/usr/bin/Rscript
#
# Input: PREFIX.LibraryX.txt
# Output: PREFIX.LibraryX.txt.pdf
arguments=commandArgs(trailingOnly = TRUE)
file=arguments[1]
r=read.table(file)
derivatives=c()
i=2
derivatives[1]=0
# 1. find the places where dy/dx = 0
# 2. find the zero with maximum y
# 3. find the x left of the peak zero with min y
while(i<=length(r[[1]])){
xi=r[[1]][i]
yi=log(r[[2]][i])
xi1=r[[1]][i-1]
yi1=log(r[[2]][i-1])
derivative=(yi-yi1)/(xi-xi1)
derivatives[i]=derivative
i=i+1
}
i=1
peakI=1
while(i<=length(r[[2]])){
y=r[[2]][i]
if(y>r[[2]][peakI]){
peakI=i
}
i=i+1
}
print(peakI)
threshold=10
minI=1
while(minI<=length(r[[2]]) && r[[2]][minI]<threshold){
minI=minI+1
}
minX=r[[1]][minI]
maxI=length(r[[2]])
while(maxI>=1 && r[[2]][maxI]<threshold){
maxI=maxI-1
}
maxX=r[[1]][maxI]
outputFile=paste(file,".png",sep="")
png(outputFile)
xMax=500
par(mfrow=c(3,1))
plot(r[[1]],r[[2]],type='l',col='black',xlab="Outer distance",ylab="Frequency",xlim=c(minX,maxX),
main=paste("Distribution of outer distances\n",file,sep=""))
grid(lty=1,lwd=2)
points(c(r[[1]][peakI]),c(r[[2]][peakI]),col="red")
plot(r[[1]],log(r[[2]])/log(10),type='l',col='black',xlab="Outer distance",ylab="Frequency (log10 scale)",xlim=c(minX,maxX),
main=paste("Distribution of outer distances\n",file,sep=""))
grid(lty=1,lwd=2)
plot(r[[1]],derivatives,type='l',col='green',ylim=c(-1,+1),xlab="Outer distance",ylab="Derivative",xlim=c(minX,maxX))
grid(lty=1,lwd=2)
dev.off()
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