Hi! 
I'm very new user of R! I need to learn more about! My problems are to
create a time series  with exiting  data and to make an study: 
1 ) I have  column with DD-MM-YR, to  transform  from string text to date,
and use it as to use as time series, I've made the transformation with
command "as.date"  but how i can say To R that the column "date" is the time
column to use for TS analysis? 

2) Problem: the date are not in a regular interval but  like:  12-05-2009 
14-05-2009   20-05-2009 and so on  for each date I've many measurement  that
correspond to  displacement registered in many points i.e.  
http://www.terrafirma.eu.com/Documents/Workshops/WS%206/Advanced%20interpretation%20of%20PSI%20time%20series%20for%20mapping%20and%20characterization%20of%20geological%20hazards%20Naro%20(Italy).pdf
HERE   
So it possible to  built a TS? 

3) It is possible to identify  and to group TS that show simlar trend? and 
how I can make this? 
For Example all TS that show seasonal trend I assign class 1, all TS that
show long term trend class 2, and so on? 
Thanks 

Davide  

--
View this message in context: http://r.789695.n4.nabble.com/Time-Series-Clustering-for-SAR-data-tp3436226p3436226.html
Sent from the R help mailing list archive at Nabble.com.
	[[alternative HTML version deleted]]

