Question

我有一个ets对象（使用ets()函数from预测获得）并想要绘制它。

fit <- ets (myTimeSeries) # myTimeSeries obtained via ts()
plot (fit) # works fine
plot (fit, main="my title") # fails with error

错误是：

Error in plotts(x = x, y = y, plot.type = plot.type, xy.labels = xy.labels, : formal argument "main" matched by multiple actual arguments

我不明白我需要做什么，该属性会显示在帮助中。

我加载的包（如果有关于调用哪个plot（）实现的冲突）：

> sessionInfo()
R version 3.1.0 (2014-04-10)
Platform: x86_64-w64-mingw32/x64 (64-bit)

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] lattice_0.20-29  forecast_5.4     timeDate_3010.98 zoo_1.7-11       ggplot2_0.9.3.1 

loaded via a namespace (and not attached):
 [1] colorspace_1.2-4 digest_0.6.4     fracdiff_1.4-2   grid_3.1.0       gtable_0.1.2    
 [6] labeling_0.2     MASS_7.3-31      munsell_0.4.2    nnet_7.3-8       parallel_3.1.0  
[11] plyr_1.8.1       proto_0.3-10     quadprog_1.5-5   Rcpp_0.11.1      reshape2_1.4    
[16] scales_0.2.4     stringr_0.6.2    tools_3.1.0      tseries_0.10-32

Answer 1

如果您确实想要在问题中指定的拟合函数的绘图中添加标题（使用USAccDeaths数据进行测试），这里有一个可行的选项：

> plot.ts(cbind(observed = myTimeSeries, level = fit$states[, 1], season = fit$states[, "s1"]), main = "New Title")

无法更改指数模型的图标题（来自预测）

1 个答案: