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Last data update: 2014.03.03

R: Construct Spatio - temporal regular data.

ConstructMPst

R Documentation

Construct Spatio - temporal regular data.

Description

Create an spatio - temporal object with regular data to order employing median polish technique.

Usage

ConstructMPst(valuest,time,pts,Delta)

Arguments

`valuest`	it's a data.frame in which different columns refer to different locations, and each row reflects a particular observation time.
`time`	indicate the time of valuest, the intervals of time must be regular.
`pts`	it's a data.frame that hold three dimensions spatial coordinates `x`, `y` and `z`.
`Delta`	vector with number of divisions of each spatial direction. c(Delta `x`, Delta `y`, Delta `z`).

Details

Table composed for coordinates of center and average of position of stations for unit tridimensional array in space - time, in which show a average value of site.

Value

An object of class ConstructMPst with the following list of components:

`results`	average value of the set of stations into unity spatio - temporal defined for delta.
`Value`	array with the results organized in dimensions defined in Delta.
`valuest`	valuest
`pts`	pts
`time`	time
`Delta`	Delta

References

Berke, O. (2001). Modified median polish kriging and its application to the wolfcamp - aquifer data. Environmetrics, 12(8):731-748.[link]

Examples

## Not run:
data(Metadb)
x<-matrix(0,1,37)
for(i in 1:37){
 x[,i] <- 2007 + (seq(0, 36)/12)[i]
}
x<-as.Date (as.yearmon(x), frac = 1)
time = as.POSIXct(x, tz = "GMT")

MPST<-ConstructMPst(Metadb[,-c(1:4)],time,pts=Metadb[,2:4],Delta=c(7,6,5))
## End(Not run)

Results


R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(STMedianPolish)
Loading required package: maptools
Loading required package: sp
Checking rgeos availability: TRUE
Loading required package: reshape2
Loading required package: spacetime
Loading required package: zoo

Attaching package: 'zoo'

The following objects are masked from 'package:base':

    as.Date, as.Date.numeric

> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/STMedianPolish/ConstructMPst.Rd_%03d_medium.png", width=480, height=480)
> ### Name: ConstructMPst
> ### Title: Construct Spatio - temporal regular data.
> ### Aliases: ConstructMPst
> 
> ### ** Examples
> 
> ## Not run:
> data(Metadb)
> x<-matrix(0,1,37)
> for(i in 1:37){
+  x[,i] <- 2007 + (seq(0, 36)/12)[i]
+ }
> x<-as.Date (as.yearmon(x), frac = 1)
> time = as.POSIXct(x, tz = "GMT")
> 
> MPST<-ConstructMPst(Metadb[,-c(1:4)],time,pts=Metadb[,2:4],Delta=c(7,6,5))
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> ## End(Not run)
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>