Time series

• a2m — expand an annual series into a monthly one
• a2q — expand an annual series into a quarterly one
• car2freq — transforms a car into a frequency
• da2m — transformation of daily data into monthly ones
• da2q — transformation of daily data into quarterly ones
• date2fq — finds the frequency associated to a date
• date2num — transforms a date into a number
• date2num_fq — transforms a date into a number and its frequency
• date2num_m — transforms a matrix of dates into numbers
• datelf2hf — transformation of a date into a higher frequency date
• datelf2hf0 — transformation of a date into a higher frequency date
• datets — returns the time span of a ts
• def0_basets — creation of the default frequencies data base
• def_basets — creation of the frequencies data base
• def_dailyform — creation of the data base for the format of daily dates
• delda — differentiates a ts ignoring NA values
• delts — differentiates a ts
• diff_date — returns the difference between 2 dates
• dummy — create a dummy variable
• extrap — extrapolate a ts by another ts
• freq2car — transforms a frequency into a string
• freqts — returns the frequency of a ts
• freqts_c — returns the frequency of a ts in complex form
• growthr — growth rate of a ts
• lagda — lag a ts ignoring NA values
• lagts — lag a ts
• m2a — transforms monthly data into annual ones
• m2q — transforms monthly data into quarterly ones
• num2date — transforms a number into a date
• overlay — overlay several ts
• prtts — print ts
• q2a — transforms quarterly data into annual ones
• q2m — expand a quarterly series into a monthly one
• reshape — creation of a ts from a vector
• seasdummy — create a seasonal dummy variable
• series — returns the values of a ts
• st_dev — standard deviation of a vector or a ts
• subper — restrict a ts to a subperiod
• ts2vec — transforms a ts into a vector
• values — value of a ts at some date
• var_t — variances of n ts at a given date
• vec2ts — vector to timeseries