Export function for IQRnlmeData object
Export an IQRnlmeData object to a CSV file that is suitable for NONMEM NA and NaN, etc. values are replace by "." and quotes are not used.
Additional unused arguments
If the compliance mode is on (.COMPLIANCE_MODE is set to TRUE) then this function also generates a compliance log file (only if filename is provided). The name of the generated compliance log file is the same name as the text file name but with appended ".log". The extension for the exported text file will be kept unchanged in the exported log file name. In order for the log file generation to work the global variable "COMPLIANCE_MODE_SCRIPT_NAME" needs to be defined by the user and in each R script set to the name of the script.