Mercurial > repos > eschen42 > w4mcorcov

annotate w4mcorcov_salience.R @ 10:9a52306991b3 draft

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planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit 5aeb583ae4a55cc24289f9d95590e02553a89552
author eschen42
date Sat, 01 Sep 2018 11:33:03 -0400
parents 06c51af11531
children 2ae2d26e3270
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23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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1 w4msalience <- function(
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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2 data_matrix # a matrix of intensities; features as rows, and samples as columns
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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3 , sample_class # a vector of sample class-levels; length(sample_class) == ncol(data_matrix)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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4 , failure_action = stop
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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5 ) {
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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6 library(stats)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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7 # begin sanity checks
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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8 if ( !is.vector(sample_class) || !( is.character(sample_class) || is.factor(sample_class) ) ) {
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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9 failure_action("w4msalience: Expected sample_class to be a vector of characters of factor-levels")
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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10 return (NULL)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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11 }
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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12 if ( !is.matrix(data_matrix) && !is.data.frame(data_matrix) ) {
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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13 failure_action("w4msalience: Expected data_matrix to be a matrix (or data.frame) of numeric")
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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14 return (NULL)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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15 }
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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16 # transpose data_matrix so that columns are the features
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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17 t_data_matrix <- t(data_matrix)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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18 if ( !is.matrix(t_data_matrix) || !is.numeric(t_data_matrix) ) {
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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19 failure_action("w4msalience: Expected data_matrix to be a matrix (or data.frame) of numeric")
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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20 return (NULL)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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21 }
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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22 n_features <- ncol(t_data_matrix)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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23 n_features_plus_1 <- 1 + n_features
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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24 features <- colnames(t_data_matrix)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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25 n_samples <- nrow(t_data_matrix)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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26 if ( length(sample_class) != n_samples ) {
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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27 strF(data_matrix)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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28 strF(sample_class)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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29 failure_action(sprintf("w4msalience: The data_matrix has %d samples but sample_class has %d", n_samples, length(sample_class)))
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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30 return (NULL)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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31 }
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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32 # end sanity checks
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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33
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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34 # "For each feature, 'select sample_class, median(intensity) from feature group by sample_class'."
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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35 # The first column(s) of the result of aggregate has the classifier value(s) specified in the 'by' list.
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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36 medianOfFeatureBySampleClassLevel <- aggregate(
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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37 x = as.data.frame(t_data_matrix)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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38 , by = list(sample_class)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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39 , FUN = "median"
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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40 )
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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41
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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42 # "For each feature, 'select sample_class, max(intensity) from feature group by sample_class'."
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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43 maxOfFeatureBySampleClassLevel <- aggregate(
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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44 x = as.data.frame(t_data_matrix)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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45 , by = list(sample_class)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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46 , FUN = "max"
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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47 )
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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48
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49 # "For each feature, 'select sample_class, rcv(intensity) from feature group by sample_class'."
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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50 # cv is less robust; deviation from normality degrades performance
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51 # cv(x) == sd(x) / mean(x)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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52 # rcv is a "robust" coefficient of variation, expressed as a proportion
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53 # rcv(x) == mad(x) / median(x)
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54 madOfFeatureBySampleClassLevel <- aggregate(
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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55 x = as.data.frame(t_data_matrix)
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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56 , by = list(sample_class)
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57 , FUN = "mad"
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58 )
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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59 rcvOfFeatureBySampleClassLevel <- as.matrix(
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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60 madOfFeatureBySampleClassLevel[,2:n_features_plus_1] / medianOfFeatureBySampleClassLevel[,2:n_features_plus_1]
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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61 )
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62 rcvOfFeatureBySampleClassLevel[is.nan(rcvOfFeatureBySampleClassLevel)] <- max(9999,max(rcvOfFeatureBySampleClassLevel, na.rm = TRUE))
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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63
9
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64 # "For each feature, 'select max(max_feature_intensity) from feature'."
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65 maxApplyMaxOfFeatureBySampleClassLevel <- sapply(
0
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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66 X = 1:n_features
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67 , FUN = function(i) {
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68 match(
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69 max(maxOfFeatureBySampleClassLevel[, i + 1])
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70 , maxOfFeatureBySampleClassLevel[, i + 1]
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71 )
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72 }
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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73 )
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74
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75 # "For each feature, 'select mean(median_feature_intensity) from feature'."
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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76 meanApplyMedianOfFeatureBySampleClassLevel <- sapply(
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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77 X = 1:n_features
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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78 , FUN = function(i) mean(medianOfFeatureBySampleClassLevel[, i + 1])
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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79 )
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80
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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81 # Compute the 'salience' for each feature, i.e., how salient the intensity of a feature
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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82 # is for one particular class-level relative to the intensity across all class-levels.
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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83 salience_df <- data.frame(
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84 # the feature name
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85 feature = features
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86 # the name (or factor-level) of the class-level with the highest median intensity for the feature
9
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87 , max_level = medianOfFeatureBySampleClassLevel[maxApplyMaxOfFeatureBySampleClassLevel,1]
0
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88 # the median intensity for the feature and the level max_level
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89 , max_median = sapply(
23f9fad4edfc planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit bd26542b811de06c1a877337a2840a9f899c2b94
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90 X = 1:n_features
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91 , FUN = function(i) {
9
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92 maxOfFeatureBySampleClassLevel[maxApplyMaxOfFeatureBySampleClassLevel[i], 1 + i]
0
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93 }
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94 )
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95 # the coefficient of variation (expressed as a proportion) for the intensity for the feature and the level max_level
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96 , max_rcv = sapply(
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97 X = 1:n_features
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98 , FUN = function(i) {
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99 rcvOfFeatureBySampleClassLevel[maxApplyMaxOfFeatureBySampleClassLevel[i], i]
0
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100 }
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101 )
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102 # the mean of the medians of intensity for all class-levels for the feature
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103 , mean_median = meanApplyMedianOfFeatureBySampleClassLevel
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104 # don't coerce strings to factors (this is a parameter for the data.frame constructor, not a column of the data.frame)
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105 , stringsAsFactors = FALSE
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106 )
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107 # raw salience is the ratio of the most-prominent level to the mean of all levels for the feature
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108 salience_df$salience <- sapply(
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109 X = 1:nrow(salience_df)
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110 , FUN = function(i) with(salience_df[i,], if (mean_median > 0) { max_median / mean_median } else { 0 } )
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111 )
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112 # "robust coefficient of variation, i.e., mad(feature-intensity for class-level max_level) / median(feature-intensity for class-level max_level)
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113 salience_df$salient_rcv <- salience_df$max_rcv
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114
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115 return (salience_df)
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116 }
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117