joineR: plot.vargm – R documentation

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plot.vargm

Plots the empirical variogram for longitudinal data

Description

Plots the empirical variogram for observed measurements, of an object of class vargm, obtained by using function variogram.

Usage

## S3 method for class 'vargm'
plot(x, smooth = FALSE, bdw = NULL, follow.time = NULL, points = TRUE, ...)

Arguments

`x`	object of class `vargm` obtained by using function. `variogram`
`smooth`	logical value to use a non-parametric estimator to calculate the variogram of all v_ijk. The default is `FALSE`, as it uses time averages.
`bdw`	bandwidth to use in the time averages. The default is `NULL`, because this is calculated automatically.
`follow.time`	the interval of time we want to construct the variogram for. When `NULL` this is the maximum of the data.
`points`	logical value if the points v_ijk should be plotted.
`...`	other graphical options as in `par`.

Value

A graphical device with the plot of empirical variogram.

Author(s)

Ines Sousa (isousa@math.uminho.pt)

Examples

data(mental)
mental.unbalanced <- to.unbalanced(mental, id.col = 1, 
                                   times = c(0, 1, 2, 4, 6, 8),
                                   Y.col = 2:7, 
                                   other.col = c(8, 10, 11))
names(mental.unbalanced)[3] <- "Y"
vgm <- variogram(indv = tail(mental.unbalanced[, 1], 30),
                 time = tail(mental.unbalanced[, 2], 30),
                 Y = tail(mental.unbalanced[, 3], 30))
plot(vgm)

joineR

Joint Modelling of Repeated Measurements and Time-to-Event Data

v1.2.5

GPL-3 | file LICENSE

Authors

Pete Philipson [aut, cre] (<https://orcid.org/0000-0001-7846-0208>), Ines Sousa [aut] (<https://orcid.org/0000-0002-2712-1713>), Peter J. Diggle [aut] (<https://orcid.org/0000-0003-3521-5020>), Paula Williamson [aut] (<https://orcid.org/0000-0001-9802-6636>), Ruwanthi Kolamunnage-Dona [aut] (<https://orcid.org/0000-0003-3886-6208>), Robin Henderson [aut], Graeme L. Hickey [aut] (<https://orcid.org/0000-0002-4989-0054>), Maria Sudell [ctb], Medical Research Council [fnd] (Grant numbers: G0400615 and MR/M013227/1)

Initial release