我想要一个看起来类似于lattice docs中给出的示例的图表：
#EXAMPLE GRAPH, not my data
> barchart(yield ~ variety | site, data = barley,
+ groups = year, layout = c(1,6), stack = TRUE,
+ auto.key = list(points = FALSE, rectangles = TRUE, space = "right"),
+ ylab = "Barley Yield (bushels/acre)",
+ scales = list(x = list(rot = 45)))
我melt编辑了我的数据以获得这个“长”形式的数据框：
> str(MDist)
'data.frame': 34560 obs. of 6 variables:
$ fCycle : Factor w/ 2 levels "Dark","Light": 2 2 2 2 2 2 2 2 2 2 ...
$ groupname: Factor w/ 8 levels "rowA","rowB",..: 1 1 1 1 1 1 1 1 1 1 ...
$ location : Factor w/ 96 levels "c1","c10","c11",..: 1 1 1 1 1 1 1 1 1 1 ...
$ timepoint: num 1 2 3 4 5 6 7 8 9 10 ...
$ variable : Factor w/ 3 levels "inadist","smldist",..: 1 1 1 1 1 1 1 1 1 1 ...
$ value : num 0 55.7 75.3 99.2 45.9 73.8 79.3 73.5 69.8 67.6 ...
我想为每个组名和 fCycle 创建一个堆叠条形图。我试过这个：
barchart(value~timepoint|groupname*fCycle, data=MDist, groups=variable,stack=T)
它不会抛出任何错误，但 30 分钟后它仍在思考。这是因为它不知道如何处理对每个条有贡献的 36 个值吗？如何使条形图更容易消化这些数据？