augment.graph_lme {MetricGraph}

Augment data with information from a graph_lme object

Description

Augment accepts a model object and a dataset and adds information about each observation in the dataset. It includes predicted values in the .fitted column, residuals in the .resid column, and standard errors for the fitted values in a .se.fit column. It also contains the New columns always begin with a . prefix to avoid overwriting columns in the original dataset.

Usage

## S3 method for class 'graph_lme'
augment(
  x,
  newdata = NULL,
  which_repl = NULL,
  sd_post_re = FALSE,
  se_fit = FALSE,
  conf_int = FALSE,
  pred_int = FALSE,
  level = 0.95,
  edge_number = "edge_number",
  distance_on_edge = "distance_on_edge",
  coord_x = "coord_x",
  coord_y = "coord_y",
  data_coords = c("PtE", "spatial"),
  normalized = FALSE,
  no_nugget = FALSE,
  check_euclidean = FALSE,
  ...
)

Arguments

x

A graph_lme object.

newdata

A data.frame or a list containing the covariates, the edge number and the distance on edge for the locations to obtain the prediction. If NULL, the fitted values will be given for the original locations where the model was fitted.

which_repl

Which replicates to obtain the prediction. If NULL predictions will be obtained for all replicates. Default is NULL.

sd_post_re

Logical indicating whether or not a .sd_post_re column should be added to the augmented output containing the posterior standard deviations of the random effects.

se_fit

Logical indicating whether or not a .se_fit column should be added to the augmented output containing the standard errors of the fitted values. If TRUE, the posterior standard deviations of the random effects will also be returned.

conf_int

Logical indicating whether or not confidence intervals for the posterior mean of the random effects should be built.

pred_int

Logical indicating whether or not prediction intervals for the fitted values should be built. If TRUE, the confidence intervals for the posterior random effects will also be built.

level

Level of confidence and prediction intervals if they are constructed.

edge_number

Name of the variable that contains the edge number, the default is edge_number.

distance_on_edge

Name of the variable that contains the distance on edge, the default is distance_on_edge.

coord_x

Column (or entry on the list) of the data that contains the x coordinate. If not supplied, the column with name "coord_x" will be chosen. Will not be used if Spoints is not NULL or if data_coords is PtE.

coord_y

Column (or entry on the list) of the data that contains the y coordinate. If not supplied, the column with name "coord_x" will be chosen. Will not be used if Spoints is not NULL or if data_coords is PtE.

data_coords

To be used only if Spoints is NULL. It decides which coordinate system to use. If PtE, the user must provide edge_number and distance_on_edge, otherwise if spatial, the user must provide coord_x and coord_y.

normalized

Are the distances on edges normalized?

no_nugget

Should the prediction be done without nugget?

check_euclidean

Check if the graph used to compute the resistance distance has Euclidean edges? The graph used to compute the resistance distance has the observation locations as vertices.

...

Additional arguments.

Value

A tidyr::tibble() with columns:

• .fitted Fitted or predicted value.

• .relwrconf Lower bound of the confidence interval of the random effects, if conf_int = TRUE

• .reuprconf Upper bound of the confidence interval of the random effects, if conf_int = TRUE

• .fittedlwrpred Lower bound of the prediction interval, if conf_int = TRUE

• .fitteduprpred Upper bound of the prediction interval, if conf_int = TRUE

• .fixed Prediction of the fixed effects.

• .random Prediction of the random effects.

• .resid The ordinary residuals, that is, the difference between observed and fitted values.

• .std_resid The standardized residuals, that is, the ordinary residuals divided by the standard error of the fitted values (by the prediction standard error), if se_fit = TRUE or pred_int = TRUE.

• .se_fit Standard errors of fitted values, if se_fit = TRUE.

• .sd_post_re Standard deviation of the posterior mean of the random effects, if se_fit = TRUE.

See Also

glance.graph_lme