[R] Time Series Clustering for SAR data

From: daveal81 <davidenotti_at_gmail.com>
Date: Fri, 08 Apr 2011 06:18:11 -0700 (PDT)


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

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