Building an EMM using New Data

Add new data to an EMM.

Usage

build(x, newdata, ...)

Arguments

x: an EMM object. Note that the function will change the original EMM!
newdata: a vector (one observation), or a matrix or data.frame (each row is an observation)
...: further arguments. If newdata is a matrix or a data.frame then verbose = TRUE can be used to monitor the progress of building the model.

Value

A reference to the changed EMM object with the data added. Note: EMM objects store all variable data in an environment which enables us to update partial data without copying the whole object. Assignment will not create a copy! Use the provided method copy().

Details

build() performs clustering and also updates the TRACDS temporal layer.

NAs are handled in the data by using only the other dimensions if the data for dissimilarity computation (see package proxy).

Examples

## load EMMTraffic data
data("EMMTraffic")
EMMTraffic
#>    Loc_1 Loc_2 Loc_3 Loc_4 Loc_5 Loc_6 Loc_7
#> 1     20    50   100    30    25     4    10
#> 2     20    80    50    20    10    10    10
#> 3     40    30    75    20    30    20    25
#> 4     15    60    30    30    10    10    15
#> 5     40    15    25    10    35    40     9
#> 6      5     5    40    35    10     5     4
#> 7      0    35    55     2     1     3     5
#> 8     20    60    30    11    20    15    10
#> 9     45    40    15    18    20    20    15
#> 10    15    20    40    40    10    10    14
#> 11     5    45    55    10    10    15     0
#> 12    10    30    10     4    15    15    10

## create EMM
emm <- EMM(measure="eJaccard", threshold=0.2)

## build model using EMMTraffic data (note that the EMM object is
## changed without assignment!)
build(emm, EMMTraffic)
## same as: emm <- build(emm, EMMTraffic)

size(emm)
#> [1] 7
plot(emm)


## emm2 <- emm does not create a copy (just a reference)
## a "deep" copy is created using copy()
emm2<- copy(emm)

## convert the emm into a graph
as.igraph(emm)
#> IGRAPH 87d2278 DNW- 7 9 -- 
#> + attr: name (v/c), weight (e/n)
#> + edges from 87d2278 (vertex names):
#> [1] 1->2 2->1 2->3 2->6 3->4 4->5 5->2 5->7 6->4