在 xyplot() 中更改背景颜色

Question

我正在尝试更改条带的背景颜色（它是一个 6 x 6 矩阵，我有 6 种条带颜色存储在一个名为 cola 的向量中）。我试图结合在互联网上找到的东西，但结果我完全不合时宜：现在我得到的是垂直条都是黄色的，水平条都是红色的:(

library(lattice)
library(latticeExtra)
B<-structure(list(ylab = c(0, 0, -1, -1, -1, -1, 0, 0, -1, -1, -1, 
-1, 1, 1, 0, 0, 0, -1, 1, 1, 0, 0, 1, -1, 1, 1, 0, -1, 0, -1, 
1, 1, 1, 1, 1, 0), xlab = c(0, -1.02679909743483, -4.31389840050087, 
-4.72016163070677, -3.82773068058066, -4.95060796675797, 1.02679909743483, 
0, -3.28709930306604, -3.69336253327194, -2.80093158314584, -3.92380886932314, 
4.31389840050087, 3.28709930306604, 0, -0.406263230205904, 0.486167719920203, 
-0.636709566257106, 4.72016163070677, 3.69336253327194, 0.406263230205904, 
0, 0.892430950126108, -0.230446336051202, 3.82773068058066, 2.80093158314584, 
-0.486167719920203, -0.892430950126108, 0, -1.12287728617731, 
4.95060796675797, 3.92380886932314, 0.636709566257106, 0.230446336051202, 
1.12287728617731, 0), zlab = c(1, 0.435981356312883, 1.28746578953454e-08, 
1.64728897189548e-09, 9.04719004157784e-08, 1.22124532708767e-15, 
0.435981356312883, 1, 2.30452944283144e-07, 1.23923277972615e-07, 
1.38063360011209e-06, 7.7715611723761e-16, 1.28746578953454e-08, 
2.30452944283144e-07, 1, 0.654543666603895, 0.608788895482761, 
3.33066907387547e-16, 1.64728897189548e-09, 1.23923277972615e-07, 
0.654543666603895, 1, 0.0429030453016164, 0, 9.04719004157784e-08, 
1.38063360011209e-06, 0.608788895482761, 0.0429030453016164, 
1, 4.22994972382185e-14, 1.22124532708767e-15, 7.7715611723761e-16, 
3.33066907387547e-16, 0, 4.22994972382185e-14, 1), g1 = structure(c(1L, 
2L, 3L, 4L, 5L, 6L, 1L, 2L, 3L, 4L, 5L, 6L, 1L, 2L, 3L, 4L, 5L, 
6L, 1L, 2L, 3L, 4L, 5L, 6L, 1L, 2L, 3L, 4L, 5L, 6L, 1L, 2L, 3L, 
4L, 5L, 6L), .Label = c("1", "2", "5", "6", "7", "8"), class = "factor"), 
    g2 = structure(c(1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 
    2L, 2L, 3L, 3L, 3L, 3L, 3L, 3L, 4L, 4L, 4L, 4L, 4L, 4L, 5L, 
    5L, 5L, 5L, 5L, 5L, 6L, 6L, 6L, 6L, 6L, 6L), .Label = c("1", 
    "2", "5", "6", "7", "8"), class = "factor")), .Names = c("ylab", 
"xlab", "zlab", "g1", "g2"), row.names = c(NA, -36L), class = "data.frame")
mycol<-c("light grey", "light grey", "purple", "purple", "purple", "purple", 
"light grey", "light grey", "purple", "purple", "purple", "purple", 
"light green", "light green", "light grey", "light grey", "light grey", 
"purple", "light green", "light green", "light grey", "light grey", 
"light green", "purple", "light green", "light green", "light grey", 
"purple", "light grey", "purple", "light green", "light green", 
"light green", "light green", "light green", "light grey")

mycola <- rainbow(6)


useOuterStrips(bwplot(~B$ylab|B$g1*B$g2,ylab="",xlab="",as.table=TRUE, par.settings=list(strip.background=list(col=mycola)),panel=function(...,bg){
    panel.fill(col=mycol[panel.number()])
},strip = function(..., bg) {
     strip.fill=col[which.packet()]
   },scale=list(draw=FALSE)))

Answer 1

这段代码（快速改编自我对this SO question 的回答）让您成为解决方案的一部分。 （我有兴趣了解它是否/如何适应在每个条带中打印文本）。

需要注意的是，自定义的strip函数需要直接传递给useOuterStrips()，而不是嵌套调用bwplot()。

# Create a function to be passes to "strip=" argument of xyplot
myStripStyle <- function(which.panel, factor.levels, ...) {
    panel.rect(0, 0, 1, 1,
               col = bgColors[which.panel],
               border = 1)
    ## This call to panel.text() commented out because it does not
    ## work as I would have expected/hoped it to
    # panel.text(x = 0.5, y = 0.5,
    #            font=2,
    #            lab = factor.levels[which.panel],
    #            col = "black")
}

mycola <- rainbow(6)
bgColors <- mycola

useOuterStrips(bwplot(~B$ylab|B$g1*B$g2,ylab="",xlab="",as.table=TRUE,
                      panel=function(...,bg){
                          panel.fill(col=mycol[panel.number()])
                      },
                      scale=list(draw=FALSE)),
               strip = myStripStyle,
               strip.left = myStripStyle)