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##################################################
# File: rSCA.inference.r
# Desp: R function for inference with SCA
# Date: Jan 16, 2014, Regina, SK, Canada
# Author: Xiuquan Wang
# Email: xiuquan.wang@gmail.com
##################################################
#: load rSCA.prediction.r
#source("rSCA.prediction.r")
##################################################
# Variables
# ================================================
#: new environment
rSCA.env = new.env()
rSCA.env$o_result_tree_p = 0 #o_result_tree = 0
rSCA.env$n_result_tree_rows_p = 0 #n_result_tree_rows_p = 0
rSCA.env$o_mean_y_p = 0
rSCA.env$n_y_cols_p = 0
rSCA.env$o_predictors_p = 0
rSCA.env$n_predictors_rows_p = 0
rSCA.env$o_predictants_p = 0
rSCA.env$s_result_file_p = ""
rSCA.env$s_result_filepath_p = ""
rSCA.env$n_model_type_p = ""
##################################################
#
# NAME: rSCA.inference
#
# INPUTs:
#
# @xfile: a string to specify the full file name of the x file, only supports *.txt or *.csv
#
# @x.row.names: TRUE/FALSE, default is FALSE
#
# @x.col.names: TRUE/FALSE, default is FALSE
#
# @x.missing.flag: a string to specify the missing flag, default is "NA"
#
# @x.type: ".txt" or ".csv", default is ".txt"
#
# @model: a list object pointing to the SCA model
#
# OUTPUTs:
#
# @result file: a text file contains the predicted values
#
# RETURNS:
#
# no return.
#
###################################################
rSCA.inference <- function(xfile, x.row.names = FALSE, x.col.names = FALSE, x.missing.flag = "NA", x.type = ".txt", model)
{
#: data matrix
o_xdata = 0
#: read x data file
if (x.type == ".txt")
{
if (x.row.names == TRUE && x.col.names == TRUE)
o_xdata = read.table(xfile, header = TRUE, row.names = 1, na.strings = x.missing.flag)
else if (x.row.names == TRUE && x.col.names == FALSE)
o_xdata = read.table(xfile, header = FALSE, row.names = 1, na.strings = x.missing.flag)
else if (x.row.names == FALSE && x.col.names == TRUE)
o_xdata = read.table(xfile, header = TRUE, na.strings = x.missing.flag)
else if (x.row.names == FALSE && x.col.names == FALSE)
o_xdata = read.table(xfile, header = FALSE, na.strings = x.missing.flag)
}
if (x.type == ".csv")
{
if (x.row.names == TRUE && x.col.names == TRUE)
o_xdata = read.csv(xfile, header = TRUE, row.names = 1, na.strings = x.missing.flag)
else if (x.row.names == TRUE && x.col.names == FALSE)
o_xdata = read.csv(xfile, header = FALSE, row.names = 1, na.strings = x.missing.flag)
else if (x.row.names == FALSE && x.col.names == TRUE)
o_xdata = read.csv(xfile, header = TRUE, na.strings = x.missing.flag)
else if (x.row.names == FALSE && x.col.names == FALSE)
o_xdata = read.csv(xfile, header = FALSE, na.strings = x.missing.flag)
}
#: remove missing rows
o_xdata = na.omit(o_xdata)
rSCA.env$o_predictors_p = o_xdata
rSCA.env$n_predictors_rows_p = nrow(o_xdata)
#: read tree and map file
rSCA.env$o_result_tree_p = read.table(model$treefile, header = TRUE)
rSCA.env$n_result_tree_rows_p = nrow(rSCA.env$o_result_tree_p)
rSCA.env$o_mean_y_p = read.table(model$mapfile, header = TRUE)
rSCA.env$n_y_cols_p = ncol(rSCA.env$o_mean_y_p)
#: define the result file
rSCA.env$s_result_file_p = model$s_rslfile
rSCA.env$s_result_filepath_p = model$s_rslfilepath
#: set model type
rSCA.env$n_model_type_p = model$type
#: start prediction
do_prediction()
}
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