spc.make.stindex: Create a spatio-temporal index based on a list of 'Spectra'...

In geoSpectral: Classes and Methods for Working with Spectral Data with Space-Time Attributes

Description

Given a list of Spectra objects, this function creates a STIDF object summarizing the spatial and temporal variability of the input dataset. Upon request, it also includes data columns.

Usage

spc.make.stindex(
  input,
  what2include = "",
  rowSimplify = "none",
  includeTIME = FALSE,
  includeLATLON = FALSE
)

Arguments

input	An object of class spectra
what2include	A character variable giving the data columns to be included in the output
rowSimplify	Either of "none", "spc.colMeans","firstRow" or "lastRow". Default is "none"
includeTIME	Logical. Whether of not to include TIME data in the output STIDF object. Default is FALSE.
includeLATLON	Logical. Whether of not to include LAT&LON data in the output STIDF object. Default is FALSE.

Details

This function accepts a list of Spectra objects and outputs one STIDF object summarizing spatial and temporal variation of the input dataset.

If rowSimplify="none", length of the output object will be equal to the sum of all rows of all elements of the input list object.

If rowSimplify="spc.colMeans", length of the output object will be equal to the number of rows of the input list object. This option returns the measurement nearest to the average time of each element of the input list.

firstRow and lastRow : length of the output object equals the number of rows of the input list object. These two options return the first and last measurements of the input list element

Value

An object of class STIDF. Each row of the output object has a space and time characteristics depending of the input argument rowSimplify.

See Also

spc.makeSpcList

Examples

sp = spc.example_spectra()
BL = spc.makeSpcList(sp,"STATION")
stidx = spc.make.stindex(BL)
dim(stidx)
stidx = spc.make.stindex(BL, what2include = "CAST")
head(stidx@data)
stidx = spc.make.stindex(BL, rowSimplify="spc.colMeans")
dim(stidx)

geoSpectral documentation built on Feb. 20, 2020, 5:08 p.m.