这是因为benfordfunction= 中的第一行：
benford <- function(data, number.of.digits = 2, sign = "positive", discrete=TRUE, round=3){
data.name <- as.character(deparse(substitute(data)))
来源：https ://github.com/cran/benford.analysis/blob/master/R/functions-new.R
data.name然后用于命名您的图表。不幸的是，您传递给函数的任何变量名称或表达式都将被deparse(substitute())调用捕获，并将用作图形的名称。
一种短期解决方案是复制和重写函数：
#install.packages("benford.analysis")
library(benford.analysis)
#install.packages("data.table")
library(data.table) # needed for function
# load hidden functions into namespace - needed for function
r <- unclass(lsf.str(envir = asNamespace("benford.analysis"), all = T))
for(name in r) eval(parse(text=paste0(name, '<-benford.analysis:::', name)))
benford_rev <- function{} # see below
for (i in colnames(iris[1:4])){
plot(benford_rev(iris[[i]], data.name = i))
}
这具有以下负面影响：
- 无法通过包修订进行维护
- 用包中通常隐藏的功能填充您的 GlobalEnv
所以希望有人可以提出更好的方法！
benford_rev <- function(data, number.of.digits = 2, sign = "positive", discrete=TRUE, round=3, data.name = as.character(deparse(substitute(data)))){ # changed
# removed line
benford.digits <- generate.benford.digits(number.of.digits)
benford.dist <- generate.benford.distribution(benford.digits)
empirical.distribution <- generate.empirical.distribution(data, number.of.digits,sign, second.order = FALSE, benford.digits)
n <- length(empirical.distribution$data)
second.order <- generate.empirical.distribution(data, number.of.digits,sign, second.order = TRUE, benford.digits, discrete = discrete, round = round)
n.second.order <- length(second.order$data)
benford.dist.freq <- benford.dist*n
## calculating useful summaries and differences
difference <- empirical.distribution$dist.freq - benford.dist.freq
squared.diff <- ((empirical.distribution$dist.freq - benford.dist.freq)^2)/benford.dist.freq
absolute.diff <- abs(empirical.distribution$dist.freq - benford.dist.freq)
### chi-squared test
chisq.bfd <- chisq.test.bfd(squared.diff, data.name)
### MAD
mean.abs.dev <- sum(abs(empirical.distribution$dist - benford.dist)/(length(benford.dist)))
if (number.of.digits > 3) {
MAD.conformity <- NA
} else {
digits.used <- c("First Digit", "First-Two Digits", "First-Three Digits")[number.of.digits]
MAD.conformity <- MAD.conformity(MAD = mean.abs.dev, digits.used)$conformity
}
### Summation
summation <- generate.summation(benford.digits,empirical.distribution$data, empirical.distribution$data.digits)
abs.excess.summation <- abs(summation - mean(summation))
### Mantissa
mantissa <- extract.mantissa(empirical.distribution$data)
mean.mantissa <- mean(mantissa)
var.mantissa <- var(mantissa)
ek.mantissa <- excess.kurtosis(mantissa)
sk.mantissa <- skewness(mantissa)
### Mantissa Arc Test
mat.bfd <- mantissa.arc.test(mantissa, data.name)
### Distortion Factor
distortion.factor <- DF(empirical.distribution$data)
## recovering the lines of the numbers
if (sign == "positive") lines <- which(data > 0 & !is.na(data))
if (sign == "negative") lines <- which(data < 0 & !is.na(data))
if (sign == "both") lines <- which(data != 0 & !is.na(data))
#lines <- which(data %in% empirical.distribution$data)
## output
output <- list(info = list(data.name = data.name,
n = n,
n.second.order = n.second.order,
number.of.digits = number.of.digits),
data = data.table(lines.used = lines,
data.used = empirical.distribution$data,
data.mantissa = mantissa,
data.digits = empirical.distribution$data.digits),
s.o.data = data.table(second.order = second.order$data,
data.second.order.digits = second.order$data.digits),
bfd = data.table(digits = benford.digits,
data.dist = empirical.distribution$dist,
data.second.order.dist = second.order$dist,
benford.dist = benford.dist,
data.second.order.dist.freq = second.order$dist.freq,
data.dist.freq = empirical.distribution$dist.freq,
benford.dist.freq = benford.dist.freq,
benford.so.dist.freq = benford.dist*n.second.order,
data.summation = summation,
abs.excess.summation = abs.excess.summation,
difference = difference,
squared.diff = squared.diff,
absolute.diff = absolute.diff),
mantissa = data.table(statistic = c("Mean Mantissa",
"Var Mantissa",
"Ex. Kurtosis Mantissa",
"Skewness Mantissa"),
values = c(mean.mantissa = mean.mantissa,
var.mantissa = var.mantissa,
ek.mantissa = ek.mantissa,
sk.mantissa = sk.mantissa)),
MAD = mean.abs.dev,
MAD.conformity = MAD.conformity,
distortion.factor = distortion.factor,
stats = list(chisq = chisq.bfd,
mantissa.arc.test = mat.bfd)
)
class(output) <- "Benford"
return(output)
}
