ggmap - 缺失值
问题描述:
我在使用ggmap时出现以下错误:Error in if (is.waive(data) || empty(data)) return(cbind(data, PANEL = integer(0))) : missing value where TRUE/FALSE needed
我一直在使用ggmap很长一段时间,但无法弄清楚问题所在 - 尝试在不同版本的R(3.3.2,3.3.3)仍然遇到同样的问题。用相同的空间范围的情节确定...ggmap - 缺失值
玩具数据集
sub <- structure(list(Lat = c(49.3292885463864, 49.3316446084215,
49.3300452342386, 49.3317620975044, 49.3304515659156, 49.3305117886863,
49.3283736754004, 49.3307167462002, 49.3318995940679, 49.333169419547,
49.3309562839252, 49.3317698899629, 49.3281374770165, 49.3316554590127,
49.3326735200194, 49.331519408234, 49.3280156106529, 49.3291709916829,
49.3328300103323, 49.3306140984074), Lon = c(-117.657207875892,
-117.672957375133, -117.66331506511, -117.672862630678, -117.66304525751,
-117.668207331581, -117.655158806988, -117.66229183045, -117.673965605927,
-117.673707660621, -117.662873110863, -117.673069192809, -117.655568553898,
-117.674182492008, -117.673907352374, -117.675914855, -117.65485127671,
-117.657316414995, -117.671748537091, -117.662937333234), z =
c(9.27369836928302, 2.39183027404169, -1.93395087707449, -3.18890166171755,
-0.97968656067399, 2.2968631268102, 8.25209737911514, -1.44955530148785,
-1.16576549902187, 0.341268832113262, -1.15519233610136, 10.2579242298728,
-4.65813764430002, 0.301315621593428, 5.25169173852741, -5.37463429849591,
4.70020657978266, -4.64139357200872, -1.38702225667279, 9.38668592801448)),
.Names = c("Lat", "Lon", "z"), row.names = c(266748L, 266749L, 266750L,
266756L, 266758L, 266760L, 266768L, 266770L, 266771L, 266772L, 266778L,
266782L, 266783L, 266784L, 266787L, 266791L, 266792L, 266796L,
266801L, 266802L), class = "data.frame")
代码
library(ggmap)
library(ggplot2)
prep <- get_googlemap(center = c(-117.660, 49.329), zoom = 14,
maptype = 'satellite', scale = 2)
map <- ggmap(prep, size = c(100, 200),
extent='device', darken = 0, legend = "bottom",
base_layer = ggplot(data = sub, aes(x = Lon, y = Lat)))
map
map + geom_point(data = sub, aes(x = Lon, y = Lat, colour = z), size = 1)
编辑
我需要使用方面,这就是为什么base_layer
调用其他数据集在那儿。
答
为什么base_layer
位?
也能正常工作对我来说:
map <- ggmap(prep, size = c(100, 200),
extent='device', darken = 0, legend = "bottom")
map + geom_point(data = sub, aes(x = Lon, y = Lat, colour = z), size = 1)
更新:
工程与facet_wrap
,太!
sub$facet <- sample(x = 1:4, size = nrow(sub), replace = TRUE)
map2 <- ggmap(ggmap = get_googlemap(maptype = 'satellite',
center = c(-117.660, 49.329),
zoom = 14)) +
geom_point(data = sub, aes(x = Lon, y = Lat, colour = z), size = 1) +
facet_wrap(~ facet, nrow = 2)
需要使用方面,这需要base_layer,据我了解... – user2602640
看到我更新的答案 – JanLauGe
不知何时变了。 ggmap有助于确保它听起来像需要base_layer进行分层!这只是星期二,我已经学到了一些东西;-) http://127.0.0.1:22682/library/ggmap/html/ggmap.html – user2602640