R 绘制包括NA在内的热图

我正在绘制以下csv文件的热图：

"people","1","2","3","4","5","6","7","8","9"
"Ej1",0,0,0,1,0,1,1,1,0
"Ej2",0,1,1,0,0,0,1,1,0
"Ej3",0,1,1,1,0,0,0,1,1
"Ej4",0,1,0,0,1,1,0,0,1
"Ej5",1,0,1,1,0,1,1,1,1
"Ej6",1,1,0,1,1,1,0,0,0
"Ej7",0,1,1,0,0,0,0,1,1
"Ej8",0,0,1,1,1,1,1,0,0
"Ej9",1,1,0,0,1,0,0,1,1

使用下面的代码，我得到下面的热图，效果很好

library(reshape2)
library(ggplot2)
library(scales)
library(plyr)
data <- read.csv("fruits2.txt", head=TRUE, sep=",")
data$people <- factor(data$people,levels=rev(data$people))
data.m = melt(data)
#data.m <- ddply(data.m, .(variable), transform, rescale = rescale(value))
data.m[,"rescale"]<-rescale(data.m[,"value"],to=c(0,1))
fewer.labels <- c("Ej9","Ej8","Ej7","Ej6","Ej5","Ej4","Ej3","Ej2","Ej1")
p <- ggplot(data.m, aes(variable, people)) +
     geom_tile(aes(fill = rescale), colour = "white") +
     scale_y_discrete(labels=fewer.labels) +
     scale_fill_gradient(low = "red", high = "green") +
     theme(axis.text=element_text(size=8))

---

如果未在

melt

中指定

id

变量，则

people

和column

8

都将被视为id，并且会在数据的变量列中释放X8。然后，不会在热图中绘制变量X8

使用

melt（data，id='people'）

应该可以解决这个问题

"people","1","2","3","4","5","6","7","8","9"
"Ej1",0,0,0,1,0,1,1,NA,0
"Ej2",0,1,1,0,0,0,1,NA,0
"Ej3",0,1,1,1,0,0,0,NA,1
"Ej4",0,NA,0,0,NA,1,0,NA,1
"Ej5",1,0,1,1,0,1,1,NA,1
"Ej6",1,1,0,1,1,1,0,NA,0
"Ej7",0,1,1,0,0,0,0,NA,1
"Ej8",0,0,1,1,1,1,1,NA,0
"Ej9",1,1,0,0,1,0,0,NA,NA