NDTS-GUI

Overview

NDTS installations on the spectrometer workstation are comprised of the daemon which runs as a service and the NDTS graphical user interface (NDTS-GUI) which provides status information and allows users to make changes to harvesting status, NAN user, and metadata that will be associated with datasets. NDTS is designed to automatically harvest datasets as they complete when harvesting is set to "on", but datasets can also be manually harvested through the NDTS-GUI.

Mapping NAN users to spectrometer workstation users

Datasets harvested need to be associated with a NAN user to allow the datasets to be visible from the Dataset Browser. This is primarily done through the NDTS-GUI where the NAN user may be changed (if the facility manager settings permit the action). By default the NAN user mapped to the spectrometer workstation is selected. The mapping is controlled by the NMR facility manager through a user management page on the NAN portal facility dashboard.

NDTS harvesting defaults

From the Facility Dashboard facility managers use the Manage Facility Users tool to add NAN users to their facility, map those users to spectrometer workstation accounts, set default harvesting settings, and decide how to handle cases where the spectrometer workstation user is not mapped to a NAN user.

When the NDTS-GUI is launched, or when the NAN user selected within the NDTS-GUI is changed, the default settings defined in the Manage Facility Users tool on the NAN web portal are refreshed to the default settings.

If the NDTS-GUI is not running, than NDTS harvesting falls back to the default settings defined in the Manage Facility Users tool

Launching the NDTS-GUI

As the harvesting settings will default to the settings defined in the Manage Facility Users tool it is important that the NDTS-GUI is running at all times so that the harvesting status is visible, and users have the ability to make changes before data collection to ensure proper harvesting and metadata. For this reason, once started the NDTS-GUI has the close button disabled to avoid accidental closing of the application. Users should also setup the NDTS GUI to launch automatically when logging in graphically to the spectrometer workstation.

Manually launch the NDTS-GUI

While it is better to automatically launch the NAN-GUI upon login, it may be launched manually with the command

/opt/nan-dtdaemon/nan_gui

Automatically Launch the NAN-GUI

The exact procedure will depend on which desktop environment you are using and whether you are setting up automatic launching for a single user account or as a system-wide setting for all users.

Checking which desktop environment you are using

echo $XDG_CURRENT_DESKTOP

or

echo $DESKTOP_SESSION

Creating the launcher script

[Desktop Entry]
Type=Application
Exec=/opt/nan-dtdaemon/nan_gui
Hidden=false
NoDisplay=false
Name=NAN GUI
Comment=NDTS graphical interface
X-GNOME-Autostart-enabled=true

Make it executable:

chmod +x ~/.config/autostart/nan_gui.desktop

Add it to the startup scripts

Desktop environment	Adding through menu bar	Adding directly through command line interface
KDE 3		~/.kde/autostart/nan_gui.desktop
KDE4		~/.kde4/autostart/nan_gui.desktop
KDE Plasma and newer versions	System Settings → Startup & Shutdown → Autostart → Add Program…	~/.config/autostart/nan_gui.desktop
GNOME	Install/launch gnome-tweaks → Startup Applications → ‘+’	~/.config/autostart/nan_gui.desktop
XFCE	Settings Manager → Session & Startup → Application Autostart → Add…	~/.config/autostart/nan_gui.desktop