Visualize Active Subnetworks

Source: R/active_snw_functions.R

Visualize Active Subnetworks

visualize_active_subnetworks(
  active_snw_path,
  genes_df,
  pin_name_path = "Biogrid",
  num_snws,
  layout = "stress",
  score_quan_thr = 0.8,
  sig_gene_thr = 0.02,
  ...
)

Arguments

active_snw_path

path to the output of an Active Subnetwork Search
genes_df

the input data that was used with run_pathfindR. It must be a data frame with 3 columns:

  1. Gene Symbol (Gene Symbol)

  2. Change value, e.g. log(fold change) (optional)

  3. p value, e.g. adjusted p value associated with differential expression

The change values in this data frame are used to color the affected genes
pin_name_path

Name of the chosen PIN or path/to/PIN.sif. If PIN name, must be one of c("Biogrid", "STRING", "GeneMania", "IntAct", "KEGG", "mmu_STRING"). If path/to/PIN.sif, the file must comply with the PIN specifications. (Default = "Biogrid")
num_snws

number of top subnetworks to be visualized (leave blank if you want to visualize all subnetworks)
layout

The type of layout to create (see ggraph for details. Default = "stress")
score_quan_thr

active subnetwork score quantile threshold. Must be between 0 and 1 or set to -1 for not filtering. (Default = 0.8)
sig_gene_thr

threshold for the minimum proportion of significant genes in the subnetwork (Default = 0.02) If the number of genes to use as threshold is calculated to be < 2 (e.g. 50 signif. genes x 0.01 = 0.5), the threshold number is set to 2
...

additional arguments for input_processing

Value

a list of ggplot objects of graph visualizations of identified active subnetworks. Green nodes are down-regulated genes, reds are up-regulated genes and yellows are non-input genes

Examples

path2snw_list <- system.file("extdata/resultActiveSubnetworkSearch.txt",
                              package = "pathfindR")
# visualize top 2 active subnetworks
g_list <- visualize_active_subnetworks(active_snw_path = path2snw_list,
                                       genes_df = RA_input[1:10, ],
                                       pin_name_path = "KEGG",
                                       num_snws = 2)
#> Number of genes provided in input: 10
#> Number of genes in input after p-value filtering: 10
#> Could not find any interactions for 5 (50%) genes in the PIN
#> Final number of genes in input: 5