plotNetworkHeatmap: Network heatmap plot

Description

Network heatmap plot.

Usage

plotNetworkHeatmap(
  datExpr, 
  plotGenes, 
  weights = NULL,
  useTOM = TRUE, 
  power = 6, 
  networkType = "unsigned", 
  main = "Heatmap of the network")

Arguments

datExpr

a data frame containing expression data, with rows corresponding to samples and columns to genes. Missing values are allowed and will be ignored.

plotGenes

a character vector giving the names of genes to be included in the plot. The names will be matched against names(datExpr).

weights

optional observation weights for datExpr to be used in correlation calculation. A matrix of the same dimensions as datExpr, containing non-negative weights. Only used with Pearson correlation.

useTOM

logical: should TOM be plotted (TRUE), or correlation-based adjacency (FALSE)?

power

soft-thresholding power for network construction.

networkType

a character string giving the newtork type. Recognized values are (unique abbreviations of) "unsigned", "signed", and "signed hybrid".

main

main title for the plot.

Value

None.

Details

The function constructs a network from the given expression data (selected by plotGenes) using the soft-thresholding procedure, optionally calculates Topological Overlap (TOM) and plots a heatmap of the network.

Note that all network calculations are done in one block and may fail due to memory allocation issues for large numbers of genes.

References