multinma: graph_conversion – R documentation

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graph_conversion

Convert networks to graph objects

Description

The method as.igraph() converts nma_data objects into the form used by the igraph package. The method as_tbl_graph() converts nma_data objects into the form used by the ggraph and tidygraph packages.

Usage

## S3 method for class 'nma_data'
as.igraph(x, ..., collapse = TRUE)

## S3 method for class 'nma_data'
as_tbl_graph(x, ...)

Arguments

`x`	An nma_data object to convert
`...`	Additional arguments
`collapse`	Logical, collapse edges over studies? Default `TRUE`, only one edge is produced for each comparison (by IPD or AgD study type) with a `.nstudy` attribute giving the number of studies making that comparison. If `FALSE`, repeated edges are added for each study making the comparison.

Value

An igraph object for as.igraph(), a tbl_graph object for as_tbl_graph().

Examples

# Set up network of smoking cessation data
head(smoking)

smk_net <- set_agd_arm(smoking,
                       study = studyn,
                       trt = trtc,
                       r = r,
                       n = n,
                       trt_ref = "No intervention")

# Print details
smk_net

# Convert to igraph object
igraph::as.igraph(smk_net)  # Edges combined by default
igraph::as.igraph(smk_net, collapse = FALSE)  # Without combining edges

# Convert to tbl_graph object
tidygraph::as_tbl_graph(smk_net)  # Edges combined by default
tidygraph::as_tbl_graph(smk_net, collapse = FALSE)  # Without combining edges

multinma

Bayesian Network Meta-Analysis of Individual and Aggregate Data

v0.3.0

GPL-3

Authors

David M. Phillippo [aut, cre] (<https://orcid.org/0000-0003-2672-7841>)

Initial release