Hello i am exercising (would like) to use spatiotemporal kriging to predict in the future the rate of populations in neighborhoods in towns. I have values for population rate in 2011, 2012, 2013, 2014 for many neighbourhoods and i need to know the corresponding values in 2015 and 2016 with the spatio temporal kriging using R. I would to know (if possible) how to apply extrapolation (spatio temporal kriging) with R from the beginning to the end. i have attached the actual R code with the help of Graeler and data file. Thank you a lot Franklin -------------- next part -------------- A non-text attachment was scrubbed... Name: importData1.R Type: application/octet-stream Size: 2427 bytes Desc: not available URL: <https://stat.ethz.ch/pipermail/r-sig-geo/attachments/20140509/4d4cfb28/attachment.obj> -------------- next part -------------- A non-text attachment was scrubbed... Name: donneesannees.csv Type: text/csv Size: 3654 bytes Desc: not available URL: <https://stat.ethz.ch/pipermail/r-sig-geo/attachments/20140509/4d4cfb28/attachment.bin>
Spatio temporal Kriging
2 messages · Franklin Tchakounte, Tomislav Hengl
4 days later
Technically speaking it is OK to predict in future (prepare a stfdfObj object with spacetime coordinates in future, then run krigeST), but I would assume that the prediction variance will be large (well this depends on your variogram / temporal nugget and temporal range of spatial autocorrelation). Consider for example the prediction models for weather in the Netherlands: http://www.knmi.nl/waarschuwingen_en_verwachtingen/ensemble.html As you get further from the measurement horizon, the confidence limits become wider and wider. Also, I do not know how much is krigeST applicable to non-Gaussian data. PS: Sending more focused questions that refer to some specific line in the code / or specific topic of broad interest are usually more efficient on R-sig-geo (see: "Do your homework before posting" in http://www.r-project.org/posting-guide.html). T. (Tom) Hengl Url: http://www.wageningenur.nl/en/Persons/dr.-T-Tom-Hengl.htm Network: http://profiles.google.com/tom.hengl Publications: http://scholar.google.com/citations?user=2oYU7S8AAAAJ
On 9-5-2014 12:55, Franklin Tchakounte wrote:
Hello i am exercising (would like) to use spatiotemporal kriging to predict in the future the rate of populations in neighborhoods in towns. I have values for population rate in 2011, 2012, 2013, 2014 for many neighbourhoods and i need to know the corresponding values in 2015 and 2016 with the spatio temporal kriging using R. I would to know (if possible) how to apply extrapolation (spatio temporal kriging) with R from the beginning to the end. i have attached the actual R code with the help of Graeler and data file. Thank you a lot Franklin
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