Re: [R-sig-Geo] Time series analysis with irregular time-series

2009-04-02 Thread Ben Fissel
Hello Wesely, The appropriate way to address irregular time series depends on what want to use the estimates for. If your objective is to estimate the times that you don't observe (interpolate) then a natural cubic spline is a good method to provide such an estimate. If your objective is to obta

[R-sig-Geo] Time series analysis with irregular time-series

2009-04-02 Thread Wesley Roberts
Dear R users I am currently investigating time series analysis using an irregular time series. Our study is looking at vegetation change in areas of alien vegetation growth after clearing events. The irregular time series is sourced from Landsat ETM+ data, over a six year period I have 38 scene