check_user_session()
Check if user is still logged in
download_nitrc_dir()
Download whole image drectory
download_nitrc_file()
Download NITRC file
get_scan_params()
Get scan parameters data
get_scan_resources()
Get scan resources
is_this_public()
Find out if the provided param is part of public data
list_image_sets()
Get NITRC image sets listing
nitrc_demographics()
Get/list project demographics
nitrc_login()
Login to NITRC
nitrc_scandata()
Get/list scan data
query_nitrc()
Perform RCurl operations
read_nitrc_project()
Read NITRC project data
set_credentials()
Set NITRC credentials.