3

这是我的问题:

#data 1:
lab1 <- 1:10
group <- rep(1:3, each = length (lab1))
label <- rep(lab1, 3)
avar <-  rep(c(0, 1, 4, 5, 6, 8, 10,  11, 12,  13), 3)
myd <- data.frame (group, label, avar)

# data 2
fillcol <- rep(rnorm(length(lab1)-1, 0.5, 0.2), 3)
group1 <- rep(1:3, each = length(fillcol)/3)
 # this variable will be used to fill color in bars
 filld <- data.frame(group1, fillcol)

# now plotting
par(mfrow = c(3, 1))
 par(mar = c(2.5, 1, 2.5, 1))

#plot1
myd1 <- myd[myd$group ==1,]
filld1 <- filld[filld$group1 ==1,]
blues <- colorRampPalette(c("yellow", "blue"))
barplot(as.matrix(diff(myd1$avar)), horiz=T, col=blues(10)[10* filld1$fillcol], 
 axes=F, xlab="Mark")
axis(1, labels=myd$label, at=myd$avar)
axis(3, labels=myd$avar, at=myd$avar)

虽然这个示例数据集,我有很多变量,我想自动化这个过程。

for (i in 1:length(unique(myd$group))){
         par(mfrow = c(i, 1))
        par(mar = c(2.5, 1, 2.5, 1))
                myd[i] <- myd[myd$group ==i,]
        filld[i] <- filld[filld$group1 ==i,]
      blues <- colorRampPalette(c("yellow", "blue"))
      barplot(as.matrix(diff(myd[i]$avar)), horiz=T, 
   col=blues(10)[10* filld1$fillcol], axes=F, xlab="Mark")
      axis(1, labels=myd[i]$label, at=myd[i]$avar)
        axis(3, labels=myd[i]$avar, at=myd[i]$avar)
        }
 Error in dim(data) <- dim : attempt to set an attribute on NULL
In addition: Warning messages:
1: In `[<-.data.frame`(`*tmp*`, i, value = list(group = c(1L, 1L, 1L,  :
  provided 3 variables to replace 1 variables
2: In `[<-.data.frame`(`*tmp*`, i, value = list(group1 = c(1L, 1L,  :
  provided 2 variables to replace 1 variables

编辑:我想创建一个循环,以便在循环内创建多个图表:

在此处输入图像描述

PS:我是 R 和 stackoverflow 的新手。如果问题不合适,请原谅,尽管我阅读了指南并尝试遵守它

4

2 回答 2

2

如果你将它包装在这样的函数中,你应该能够让它工作并被多次调用。

colbarplot <- function(group) {

    myd1 <- myd[myd$group == group,]
    filld1 <- filld[filld$group1 == group,]
    blues <- colorRampPalette(c("yellow", "blue"))
    barplot(as.matrix(diff(myd1$avar)), horiz=T,
            col=blues(10)[10* filld1$fillcol], 
            axes=F, xlab="Mark")
    axis(1, labels=myd$label, at=myd$avar)
    axis(3, labels=myd$avar, at=myd$avar)
}

par(mfrow = c(3, 1))
par(mar = c(2.5, 1, 2.5, 1))
sapply(unique(myd$group),function(x) colbarplot(x))

这将在您所追求的一页上提供多个图。

于 2012-05-02T01:21:50.830 回答
0

这里有两个问题。您无意中覆盖了循环中的“myd”和“filld”。其次,您应该在开始时指定 mfrow,然后生成绘图(本例中为 3)。您正在中间重置 mfrow 。不是你想要的。

试试这个:

opar <- par(mfrow = c(length(unique(myd$group)), 1), mar = c(2.5, 1, 2.5, 1))

for (i in 1:length(unique(myd$group))){
    myd1 <- myd[myd$group ==i,]
    filld1 <- filld[filld$group1 ==i,]
    blues <- colorRampPalette(c("yellow", "blue"))
    barplot(as.matrix(diff(myd1$avar)), horiz=T, 
       col=blues(10)[10* filld1$fillcol], axes=F, xlab="Mark")
    axis(1, labels=myd1$label, at=myd1$avar)
    axis(3, labels=myd1$avar, at=myd1$avar)
 }

 par(opar);
于 2012-05-02T01:59:21.690 回答