我已經開始使用ggplot最近,我有點困惑與日期時間的X軸繪圖。日期ggplot問題
有問題的最小的例子是這樣的:
df = data.frame(DateTime=c("2011-03-29 22:44:01", "2011-03-30 00:08:36", "2011-04-07 08:49:50"), response=c(1,2,3))
df$DateTime = as.POSIXct(df$DateTime, format="%Y-%m-%d %H:%M:%S")
這給ANS錯誤:
> qplot(DateTime, response, data=df)
Error in seq.int(r1$year, to$year, by) : 'from' must be finite
,但這是工作的罰款:
> qplot(DateTime, response, data=df[1:2,])
爲什麼是我第一次陰謀失敗?
按照要求sessionInfo()顯示:
sessionInfo()
R version 2.12.2 (2011-02-25) Platform: i386-pc-mingw32/i386 (32-bit)
locale: [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252 >LC_MONETARY=English_United States.1252 LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages: [1] grid grDevices datasets splines graphics stats tcltk utils methods base
other attached packages: [1] car_2.0-9 nnet_7.3-1 MASS_7.3-11 RColorBrewer_1.0-2 doBy_4.3.0 ggplot2_0.8.9 proto_0.3-9.1 reshape_0.8.4
[9] plyr_1.4.1 svSocket_0.9-51 TinnR_1.0.3 R2HTML_2.2 >Hmisc_3.8-3 survival_2.36-5
loaded via a namespace (and not attached): [1] cluster_1.13.3 digest_0.4.2 lattice_0.19-17 Matrix_0.999375-46 >svMisc_0.9-61 tools_2.12.2
而回溯()輸出:
traceback() 20: seq.POSIXt(floor_time(range[1], time), ceiling_time(range[2], time), by = time) 19: fullseq_time(d, .$break_points()[2]) 18: get(x, envir = this, inherits = inh)(this, ...) 17: scales$x$output_breaks() 16: inherits(x, "factor") 15: is.factor(x) 14: rescale(data, 0:1, range, clip = clip) 13: get(x, envir = this, inherits = inh)(this, ...) 12: .$rescale_var(scales$x$output_breaks(), x.range, TRUE) 11: get(x, envir = this, inherits = inh)(this, ...) 10: coord$compute_ranges(scales) 9: FUN(1L[[1L]], ...) 8: lapply(seq_along(data), function(i) { layer), scales = , mapping = list(x = DateTime, y = response), options = list(labels = list(x = "DateTime", y = "response")), coordinates = , facet = , plot_env =)) 1: print(list(data = list(DateTime = c(1301431441, 1301436516, 1302158990 ), response = c(1, 2, 3)), layers = list(), scales = , mapping = list(x = DateTime, y = response), options = list( labels = list(x = "DateTime", y = "response")), coordinates = , facet = , plot_env =))
它適用於我。你可以發佈你的'sessionInfo()'嗎? – 2011-04-07 16:07:24
它也適用於我。我在Mac OS 10.5上使用R 2.12.2。如Iselzer所示,發佈sessionInfo()將有助於 – Ramnath 2011-04-07 16:59:21
如果他正在使用'ggplot'而不是'ggplot2',那麼他就會過時。 – 2011-04-07 20:05:27