lagts Time series m2q

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m2a

transforms monthly data into annual ones

CALLING SEQUENCE

tsout=m2a(tsin,ind)

PARAMETERS

Input

• tsin = a monthly timeseries

• ind =

 - -1 if the annual data is to be the sum of the corresponding months

 - 0 if the annual data is to be the mean of the corresponding months

 -  i if the annual value is to be eqaul to the value of the i-th month

• ind is optional; if not provided, it is set to -1

Output

• tsout = the corresponding annual time series

DESCRIPTION

Transforms monthly data into annual ones.

EXAMPLE

ts = reshape([1:35],'1978m4') // ceate a monthly ts
y = m2a(x) // gives an annual ts, from 1979a to 1980a with values 186 and 330 
y = m2a(x,-1) // gives an annual ts, from 1979a to 1980a with values 186 and 330 
y = m2a(x,3) // gives an annual ts, from 1979a to 1981a with values 11, 23, 35

AUTHOR

Eric Dubois 2002
lagts Time series m2q