출처 : http://a-little-book-of-r-for-time-series.readthedocs.io/en/latest/src/timeseries.html Using R for Time Series Analysis Time Series Analysis This booklet itells you how to use the R statistical software to carry out some simple analyses that are common in analysing time series data. This booklet assumes that the reader has some basic knowledge of time series analysis, and the principal focu..