annotate cluster.tools/cluster.2.centroid.R @ 6:3d3a8595b981 draft

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author peter-waltman
date Fri, 01 Mar 2013 19:54:08 -0500
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1 #!/usr/bin/env Rscript
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2 argspec <- c("tab.2.cdt.R converts a data matrix to cdt format
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3
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4 Usage:
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5
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6 Optional:
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7
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8 \n\n")
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9 args <- commandArgs(TRUE)
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10 if ( length( args ) == 1 && args =="--help") {
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11 write(argspec, stderr())
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12 q();
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13 }
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14
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15 lib.load.quiet <- function( package ) {
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16 package <- as.character(substitute(package))
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17 suppressPackageStartupMessages( do.call( "library", list( package=package ) ) )
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18 }
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19
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20 lib.load.quiet( getopt )
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21 lib.load.quiet( amap )
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22
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23 if ( any( c( 'flashClust', 'fastcluster' ) %in% installed.packages() ) ) {
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24 if ( 'flashClust' %in% installed.packages() ) {
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25 lib.load.quiet( flashClust )
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26 } else {
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27 if ( 'fastcluster' %in% installed.packages() ) {
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28 lib.load.quiet( fastcluster )
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29 }
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30 }
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31 }
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32
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33 spec <- matrix( c( "dataset", "d", 1, "character",
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34 "gen.new.dgram", "g", 2, "character",
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35 "output.fname", "o", 2, "character"
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36 ),
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37 nc=4,
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38 byrow=TRUE
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39 )
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40
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41
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42 opt <- getopt( spec=spec )
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43 if ( is.null( opt$output.report.dir ) ) {
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44 opt$output.report.dir <- "report"
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45
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46 if (! file.exists( opt$output.report.dir ) ) {
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47 dir.create( opt$output.report.dir )
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48 } else {
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49 if ( ! file.info( 'report' )$isdir ) {
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50 opt$output.report.dir <- 'heatmap.report'
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51 dir.create( opt$output.report.dir )
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52 }
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53 }
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54 }
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55 if ( is.null( opt$output.fname ) ) { opt$output.fname <- file.path( opt$output.report.dir, paste( "data.RData", sep="." ) ) }
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56 if ( is.null( opt$gen.new.dgram ) ) {
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57 opt$gen.new.dgram <- FALSE
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58 } else {
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59 if ( ! opt$gen.new.dgram %in% c( "no", "yes" ) ) {
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60 stop( "invalid input to gen.new.dgram param", opt$gen.new.dgram, "\n" )
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61 }
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62 ## set to TRUE/FALSE
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63 opt$gen.new.dgram <- ( opt$gen.new.dgram == "yes" )
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64 }
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65
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66
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67 load( opt$dataset ) ## should load the cl, treecl.res (or partcl.res) and data
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68
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69 if ( ! exists( 'data' ) ) stop( "No data object in the rdata file provided for", opt$output.format, "format!!\n" )
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70 if ( inherits( data, "dist" ) ) stop( "data provided is a distance matrix - not a data matrix. Can't generate TreeView or Tab-delimited files w/distance matrices!\n" )
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71
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72 ## the rest of this is for the remaining output formats
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73 ## pre-set the cluster results for rows & cols to NULL
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74 direction <- NULL
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75 if ( exists( 'treecl.res' ) ) {
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76 cl.res <- treecl.res
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77 if ( is.null( treecl.res$dist.method ) ) treecl.res$dist.method <- 'euclidean' # just set it to some stub so that the ctc fn's don't complain
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78 } else {
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79 if ( exists( 'partcl.res' ) ) {
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80 cl.res <- partcl.res
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81 }
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82 else {
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83 stop( 'could not find a valid cluster result to use for primary direction\n' )
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84 }
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85 }
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86
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87 if ( all( names( cl ) %in% rownames( data ) ) ) {
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88 direction <- "rows"
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89 } else if ( all( names( cl ) %in% colnames( data ) ) ) {
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90 direction <- "cols"
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91 data <- t( data )
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92 } else {
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93 stop( "Specified cluster result does not come from this data set\n" )
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94 }
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95
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96
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97 centroids <- NULL
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98 cl <- sort( cl )
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99 if ( inherits( cl.res, "kmeans" ) ) {
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100 ## already comes pre-calculated for us!!
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101 centroids <- cl.res$centers
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102 } else {
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103 data <- data[ names( cl ), ]
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104 cl.list <- unique( cl )
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105 cl.list <- lapply( cl.list, function(i) cl[ cl %in% i ] )
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106 centroids <- sapply( cl.list,
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107 function(x) {
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108 return( apply( data[ names(x), , drop=F ], 2, mean, na.rm=T ) )
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109 }
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110 )
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111 centroids <- t( centroids ) ## get them back to the same number of columns that data has now
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112 }
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113
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114 data <- centroids
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115 rownames( data ) <- sapply( 1:max( cl ), function(i) sprintf( "cluster-%02d", i ) )
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116
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117 if ( opt$gen.new.dgram ) {
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118 distance <- 'euclidean'
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119 if ( inherits( cl.res, 'hclust' ) ) {
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120 distance <- cl.res$dist.method
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121 }
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122 amap.distance <- c( "euclidean", "maximum", "manhattan", "canberra", "binary",
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123 "pearson", "abspearson", "correlation", "abscorrelation", "spearman", "kendall" )
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124 names( amap.distance ) <- c( "euclidean", "maximum", "manhattan", "canberra", "binary",
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125 "cosine", "abscosine", "pearson", "abspearson", "spearman", "kendall" )
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126
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127 if ( ! distance %in% names( amap.distance ) ) stop("unsupported distance.")
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128 dist.mat <- Dist( data, method=as.character( amap.distance[ distance ] ) )
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129 treecl.res <- hclust( dist.mat )
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130 cl <- cutree( treecl.res, nrow(data) )
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131 }
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132
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133 if ( direction == "cols" ) {
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134 data <- t( data )
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135 }
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136
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137 save( file=opt$output.fname, treecl.res, cl, data )