我正在尝试从我的数据集创建一个散点图矩阵,以便在结果矩阵中创建:
到目前为止,我尝试过使用函数:
但是我无法用这些软件包获得不错的结果,并且每次看起来我的一个或多个要求都缺失了。
创建和使用函数如下:
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$subType <- 'logpoints'
a <- putPlot(a,subspnew,row,col)
}
}
return(a)
}
scatplot <- ggpairs(...)
scatplot_log10 <- ggpairs_logarithmize(scatplot)
scatplot_log10
是否有任何简单的解决方案可用于创建具有对数轴的散点图矩阵以满足我的要求?
EDIT(13.7.2012):询问示例数据和输出。以下是生成演示数据集的一些代码片段:
声明必要的功能
logarithmize <- function(a)
{
max_limit <- sqrt(length(a$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,根据您拥有的操作系统更改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"))
答案 0 :(得分:4)
pairs
的问题源于在日志坐标系中使用用户坐标。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)
这表明以下解决方案(使用相关数据):
## 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]))
这会生成以下图