I have a dataset from March 2006 to January 2018.
Using proc timeseries, I am trying to identify the trend from a time series dataset.
ods graphics on;
proc timeseries data = all_posters_ext plots = (series corr decomp) outdecomp = all_posters_ext_trend;
id date interval = month accumulate = avg;
var nbr_poster;
decomp ORIG TCC / lambda = 10000;
run;
However, the TCC variable given by that code give empty observations from March 2006 to August 2006 and from August 2017 to January 2018.
Is it possible to expand the TCC to cover the whole time period analyzed (March 2006 to January 2018)?
Thank you in advance