> library(dygraphs)
> dygraph(ldeaths, main = "All", group = "lung-deaths")

options("viewer"=NULL)
dygraph(ldeaths, main = "All", group = "lung-deaths")

library(dygraphs)
dygraph(ldeaths, main = "All", group = "lung-deaths")

sessionInfo()
R version 3.2.2 (2015-08-14)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 14.04.3 LTS

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C               LC_TIME=zh_TW.UTF-8        LC_COLLATE=en_US.UTF-8
 [5] LC_MONETARY=zh_TW.UTF-8    LC_MESSAGES=en_US.UTF-8    LC_PAPER=zh_TW.UTF-8       LC_NAME=C
 [9] LC_ADDRESS=C               LC_TELEPHONE=C             LC_MEASUREMENT=zh_TW.UTF-8 LC_IDENTIFICATION=C

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

other attached packages:
[1] dygraphs_0.4.6

loaded via a namespace (and not attached):
 [1] htmlwidgets_0.5  zoo_1.7-12       magrittr_1.5     htmltools_0.2.6  tools_3.2.2      xts_0.9-7
 [7] rstudioapi_0.3.1 yaml_2.1.13      grid_3.2.2       jsonlite_0.9.16  digest_0.6.8     lattice_0.20-33