在R中具有对数轴的散点图矩阵
我正在尝试从我的数据集创建散点图矩阵,以便在结果矩阵中:
到目前为止,我尝试过使用函数:
但是,我一直无法用这些软件包获得体面的结果,每次看起来我的一项或多项要求都不存在。
功能创建和使用如下:
ggpairs_logarithmize <- function(a) { # parameter a is a ggpairs sp-matrix
max_limit <- sqrt(length(a$plots))
for(row in 1:max_limit) { # index 1 is used to go through the diagonal also
for(col in j:max_limit) {
subsp <- getPlot(a,row,col)
subspnew <- subsp + scale_y_log10() + scale_x_log10()
subspnew$type <- 'logcontinous'
subspnew$subType <- 'logpoints'
a <- putPlot(a,subspnew,row,col)
}
}
return(a)
}
scatplot <- ggpairs(...)
scatplot_log10 <- ggpairs_logarithmize(scatplot)
scatplot_log10
是否有任何简单的解决方案可用于根据我的要求创建具有对数轴的散点图矩阵?
编辑(13.7.2012):要求提供示例数据和输出。 以下是生成演示数据集的一些代码片段:
声明必要的功能
logarithmize <- function(a)
{
max_limit <- sqrt(length(a$plots))
for(j in 1:max_limit) {
for(i in j:max_limit) {
subsp <- getPlot(a,i,j)
subspnew <- subsp + scale_y_log10() + scale_x_log10()
subspnew$type <- 'logcontinous'
subspnew$subType <- 'logpoints'
a <- putPlot(a,subspnew,i,j)
}
}
return(a)
}
add_quarters <- function(a,datecol,targetcol) {
for(i in 1:nrow(a)) {
month <- 1+as.POSIXlt(as.Date(a[i,datecol]))$mon
if ( month <= 3 ) { a[i,targetcol] <- "Q1" }
else if (month <= 6 && month > 3) { a[i,targetcol] <- "Q2" }
else if ( month <= 9 && month > 6 ) { a[i,targetcol] <- "Q3" }
else if ( month > 9 ) { a[i,targetcol] <- "Q4" }
}
return(a)
}
创建数据集:
days <- seq.Date(as.Date("2010-01-01"),as.Date("2012-06-06"),"day")
bananas <- sample(1:350,length(days), replace=T)
apples <- sample(1:350,length(days), replace=T)
oranges <- sample(1:350,length(days), replace=T)
weekdays <- c("Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday")
fruitsales <- data.frame(Date=days,Dayofweek=rep(weekdays,length.out=length(days)),Bananas=bananas,Apples=apples,Oranges=oranges)
fruitsales[5:6,"Quarter"] <- NA
fruitsales[6:7,"Daytype"] <- NA
fruitsales$Daytype <- fruitsales$Dayofweek
levels(fruitsales$Daytype) # Confirm the day type levels before assigning new levels
levels(fruitsales$Daytype) <- c("Casual","Casual","Weekend","Weekend","Casual","Casual","Casual
")
fruitsales <- add_quarters(fruitsales,1,6)
Excecute(注意!Windows / Mac用户,根据您的操作系统更改x11())
# install.packages("GGally")
require(GGally)
x11(); ggpairs(fruitsales,columns=3:5,colour="Quarter",shape="Daytype")
x11(); logarithmize(ggpairs(fruitsales,columns=3:5,colour="Quarter",shape="Daytype"))
这个问题pairs
从在日志坐标系统中的使用的用户坐标的茎。 具体来说,在对角线上添加标签时, pairs
设置
par(usr = c(0, 1, 0, 1))
但是,如果您通过log = "xy"
指定日志坐标系,那么您需要的是
par(usr = c(0, 1, 0, 1), xlog = FALSE, ylog = FALSE)
在R帮助中看到这篇文章。
这表明以下解决方案(使用有问题的数据):
## adapted from panel.cor in ?pairs
panel.cor <- function(x, y, digits=2, cex.cor, quarter, ...)
{
usr <- par("usr"); on.exit(par(usr))
par(usr = c(0, 1, 0, 1), xlog = FALSE, ylog = FALSE)
r <- rev(tapply(seq_along(quarter), quarter, function(id) cor(x[id], y[id])))
txt <- format(c(0.123456789, r), digits=digits)[-1]
txt <- paste(names(txt), txt)
if(missing(cex.cor)) cex.cor <- 0.8/strwidth(txt)
text(0.5, c(0.2, 0.4, 0.6, 0.8), txt)
}
pairs(fruitsales[,3:5], log = "xy",
diag.panel = function(x, ...) par(xlog = FALSE, ylog = FALSE),
label.pos = 0.5,
col = unclass(factor(fruitsales[,6])),
pch = unclass(fruitsales[,7]), upper.panel = panel.cor,
quarter = factor(fruitsales[,6]))
这会产生下面的图
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