alluvial_enriched {XINA} | R Documentation

## alluvial_enriched

### Description

'alluvial_enriched’ draws an alluvial plot and finds comigrated proteins. The comigration is a group of proteins that show the same expression pattern, classified and evaluated by XINA clustering, in at least two conditions. XINA can reduce the dataset complexity by filtering based on the number of comigrated proteins (size, ’comigration_size’ parameter) and perform an enrichment test (P-value of Fisher’s exact test, ’pval_threshold’) to determine significance of enriched comigrations. The Fisher’s exact test can only be done for two conditions at a time. The following 2x2 table was used to calculate the P-value from the Fisher’s exact test. To evaluate significance of co-migrated proteins from cluster #1 in control to cluster #2 in test group,

- | cluster #1 in control | other clusters in control
cluster #2 in test | 65 (TP) | 175 (FP)
other clusters in test | 35 (FN) | 979 (TN)

### Usage

    alluvial_enriched(clustering_result, selected_conditions,
      comigration_size = 0, pval_threshold = 1, pval_method = "fdr",
      cex = 0.7, alpha = 0.3)

### Arguments

`clustering_result` | A list containing XINA clustering results. See xina_clustering
`selected_conditions` | A vector of condition names used in XINA clustering results. The number of selected conditions should be at least two.
`comigration_size` | The number of proteins comigrated together in the selected conditions of XINA clustering results. Default is 0
`pval_threshold` | This option is avaiable only when you selected two conditions for comigration search.
`pval_method` | Method for p-value adjustment. See p.adjust
`cex` | Scaling of fonts of category labels. Default if 0.7. See alluvial
`alpha` | Transparency of the stripes. Default if 0.3. See alluvial

### Value

A data frame containing comigrations and an alluvial plot showing comigrations

### Examples

    # load XINA example data
    data(xina_example)

    # Get the experimental conditions in the example data
    classes <- as.vector(example_clusters$condition)

    # Get comigrations without any thresholds
    all_comigrations <- alluvial_enriched(example_clusters, classes)

    # Get comigrations that have >= 5 size (the number of comigrated proteins)
    all_cor_enriched <- alluvial_enriched(example_clusters, classes, comigration_size=5)

    # Get all the comigrations between Control and Stimulus1
    comigrations_Control_Stimulus1 <- alluvial_enriched(example_clusters,
    c(classes[1],classes[2]))

    # Get comigrations between Control and Stimulus1, that have >=5 size
    comigrations_Control_Stimulus1_over5 <- alluvial_enriched(example_clusters,
    c(classes[1],classes[2]), comigration_size=5)

    # Get comigrations between Control and Stimulus1,
    # that have >= 5 size and enrichment FDR <= 0.01
    comigrations_Control_Stimulus1_pval0.01_size5 <- alluvial_enriched(example_clusters,
    c(classes[1],classes[2]), comigration_size=5, pval_threshold=0.01)

    # Get  comigrations between Control and Stimulus1,
    # that have >= 5 size and enrichment Benjamini & Yekutieli <= 0.01
    comigrations_Control_Stimulus1_BY0.01_size5 <- alluvial_enriched(example_clusters,
    c(classes[1],classes[2]), comigration_size=5, pval_threshold=0.01, pval_method="BY")

[Package XINA version 1.2.0 Index]