Mercurial > repos > eschen42 > w4mcorcov
view w4mcorcov_input.R @ 9:06c51af11531 draft
planemo upload for repository https://github.com/HegemanLab/w4mcorcov_galaxy_wrapper/tree/master commit fda7ea61f0a082fd0c28730e471e66c92aaa04d0
author | eschen42 |
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date | Fri, 10 Aug 2018 11:15:31 -0400 |
parents | 066b1f409e9f |
children | 9a52306991b3 |
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# read_data_frame - read a w4m data frame, with error handling # e.g., data_matrix_input_env <- read_data_frame(dataMatrix_in, "data matrix input") read_data_frame <- function(file_path, kind_string, failure_action = failure_action) { my.env <- new.env() my.env$success <- FALSE my.env$msg <- sprintf("no message reading %s", kind_string) tryCatch( expr = { my.env$data <- utils::read.delim( fill = FALSE, file = file_path ) my.env$success <- TRUE } , error = function(e) { my.env$ msg <- sprintf("%s read failed", kind_string) } ) if (!my.env$success) { failure_action(my.env$msg) return ( FALSE ) } return (my.env) } # read one of three XCMS data elements: dataMatrix, sampleMetadata, variableMetadata # returns respectively: matrix, data.frame, data.frame, or FALSE if there is a failure read_xcms_data_element <- function(xcms_data_in, xcms_data_type, failure_action = stop) { # note that 'stop' effectively means 'throw'; if 'warning' and 'message' are caught, they mean 'throw' as well my_failure_action <- function(...) { failure_action("read_xcms_data_element: ", ...) } # xcms_data_type must be in c("sampleMetadata", "variableMetadata", "dataMatrix") if ( ! is.character(xcms_data_type) ) { my_failure_action(sprintf("bad parameter xcms_data_type '%s'", deparse(xcms_data_type))) return ( FALSE ) } if ( 1 != length(xcms_data_type) || ! ( xcms_data_type %in% c("sampleMetadata", "variableMetadata", "dataMatrix") ) ) { my_failure_action( sprintf("bad parameter xcms_data_type '%s'", xcms_data_type) ) return ( FALSE ) } if ( is.character(xcms_data_in) ) { # case: xcms_data_in is a path to a file xcms_data_input_env <- read_data_frame( xcms_data_in, sprintf("%s input", xcms_data_type) ) if (!xcms_data_input_env$success) { my_failure_action(xcms_data_input_env$msg) return ( FALSE ) } return ( xcms_data_input_env$data ) } else { # case: xcms_data_in is invalid my_failure_action( sprintf("xcms_data_in has unexpected type %s", typeof(xcms_data_in)) ) return ( FALSE ) } } read_inputs <- function(input_env, failure_action = print) { if ( ! is.environment(input_env) ) { failure_action("read_inputs: fatal error - 'input_env' is not an environment") return ( FALSE ) } if (!is.null(sampleMetadata_in <- input_env$sampleMetadata_in)) { # --- # read in the sample metadata read_data_result <- tryCatchFunc( expr = { read_xcms_data_element(xcms_data_in = sampleMetadata_in, xcms_data_type = "sampleMetadata") } ) if ( read_data_result$success ) { smpl_metadata <- read_data_result$value } else { failure_action(read_data_result$msg) return ( FALSE ) } # extract rownames rownames(smpl_metadata) <- smpl_metadata[,1] input_env$smpl_metadata <- smpl_metadata # ... } else { failure_action("read_inputs: fatal error - 'sampleMetadata_in' is missing from 'input_env'") return ( FALSE ) } if (!is.null(variableMetadata_in <- input_env$variableMetadata_in)) { # --- # read in the variable metadata read_data_result <- tryCatchFunc( expr = { read_xcms_data_element(xcms_data_in = variableMetadata_in, xcms_data_type = "variableMetadata") } ) if ( read_data_result$success ) { vrbl_metadata <- read_data_result$value } else { failure_action(read_data_result$msg) return (FALSE) } # extract rownames (using make.names to handle degenerate feature names) err.env <- new.env() err.env$success <- FALSE err.env$msg <- "no message setting vrbl_metadata rownames" tryCatch( expr = { rownames(vrbl_metadata) <- make.names( vrbl_metadata[,1], unique = TRUE ) vrbl_metadata[,1] <- rownames(vrbl_metadata) err.env$success <- TRUE } , error = function(e) { err.env$ msg <- sprintf("failed to set rownames for vrbl_metadata read because '%s'", e$message) } ) if (!err.env$success) { failure_action(err.env$msg) return ( FALSE ) } input_env$vrbl_metadata <- vrbl_metadata # ... } else { failure_action("read_inputs: fatal error - 'variableMetadata_in' is missing from 'input_env'") return ( FALSE ) } if (!is.null(dataMatrix_in <- input_env$dataMatrix_in)) { # --- # read in the data matrix read_data_result <- tryCatchFunc( expr = { read_xcms_data_element(xcms_data_in = dataMatrix_in, xcms_data_type = "dataMatrix") } ) if ( read_data_result$success ) { data_matrix <- read_data_result$value } else { failure_action(read_data_result$msg) return (FALSE) } if ( ! is.matrix(data_matrix) ) { # extract rownames (using make.names to handle degenerate feature names) err.env <- new.env() err.env$success <- FALSE err.env$msg <- "no message setting data_matrix rownames" tryCatch( expr = { rownames(data_matrix) <- make.names( data_matrix[,1], unique = TRUE ) err.env$success <- TRUE } , error = function(e) { err.env$msg <- sprintf("failed to set rownames for data_matrix read because '%s'", e$message) } ) if (!err.env$success) { failure_action(err.env$msg) return ( FALSE ) } # remove rownames column data_matrix <- data_matrix[,2:ncol(data_matrix)] # convert data_matrix to matrix from data.frame data_matrix <- as.matrix(data_matrix) } # Omit any feature not found in variableMetadata and any sample not found in sampleMetadata # For something more elaborate, see https://github.com/HegemanLab/w4mclassfilter data_matrix <- data_matrix[rownames(data_matrix) %in% rownames(vrbl_metadata),colnames(data_matrix) %in% rownames(smpl_metadata)] input_env$data_matrix <- data_matrix # ... } else { failure_action("read_inputs: fatal error - 'dataMatrix_in' is missing from 'input_env'") return ( FALSE ) } return ( TRUE ) }