xGSEAbarplot {Pi} | R Documentation

## Function to visualise GSEA results using a barplot

### Description

`xGSEAbarplot` is supposed to visualise GSEA results using a barplot. It returns an object of class "ggplot".

### Usage

    xGSEAbarplot(eGSEA, top_num = 10, displayBy = c("nes", "adjp", "fdr",
    "pvalue"), FDR.cutoff = 0.05, bar.label = TRUE, bar.label.size = 3,
    wrap.width = NULL, signature = TRUE)

### Arguments

`eGSEA` | an object of class "eGSEA"
`top_num` | the number of the top terms (sorted according to FDR or adjusted p-values). If it is 'auto', only the significant terms (see below FDR.cutoff) will be displayed
`displayBy` | which statistics will be used for displaying. It can be "nes" for normalised enrichment score (by default), "adjp" or "fdr" for adjusted p value (or FDR), "pvalue" for p value
`FDR.cutoff` | FDR cutoff used to declare the significant terms. By default, it is set to 0.05. This option only works when setting top_num (see above) is 'auto'
`bar.label` | logical to indicate whether to label each bar with FDR. By default, it sets to true for bar labelling
`bar.label.size` | an integer specifying the bar labelling text size. By default, it sets to 3
`wrap.width` | a positive integer specifying wrap width of name
`signature` | logical to indicate whether the signature is assigned to the plot caption. By default, it sets TRUE showing which function is used to draw this graph

### Value

an object of class "ggplot"

### Note

none

### See Also

`xPierGSEA`

### Examples

    ## Not run:
    # Load the library
    library(Pi)

    ## End(Not run)
    RData.location <- "http://galahad.well.ox.ac.uk/bigdata_dev"
    ## Not run:
    bp <- xGSEAbarplot(eGSEA, top_num="auto", displayBy="nes")
    #pdf(file="GSEA_barplot.pdf", height=6, width=12, compress=TRUE)
    print(bp)
    #dev.off()

    ## End(Not run)

[Package Pi version 1.6.2 Index]