Reference

All functions
path_keyword()	Build path to indicator data file
path_trendecon()	Build paths from base directory
proc_index()	Prepare an index.
proc_keyword()	Processes the data for a single keyword.
proc_keyword_init()	Download daily, weekly and monthly Google Trends data for a keyword.
proc_keyword_latest()	Download latest data
proc_trendecon_at()	Calculate Trendecon Main Indices for Germany
proc_trendecon_ch()	Calculate Trendecon Main Indices for Switzeland
proc_trendecon_de()	Calculate Trendecon Main Indices for Germany
read_keywords()	Read keyword indicator data from disk
ts_gtrends()	Download Google Trend Data
ts_gtrends_index()	Construct Index based on Google Trend keywords.
ts_gtrends_mwd()	Robust and Consistent Time Series from Google Trends
ts_gtrends_windows()	Download approximate daily series over a sequence of time-windows
write_keyword()	Write csv file for keyword indicator