- Slides: 50
WDSS-II Training Module I An overview of the WDSS-II display
What is WDSS-II? n n Infrastructure to support application development, data ingest and distribution, configuration, and output data formats. Real-time and off-line data integration of data from multiple radars and other sensors. Interactive 4 D Display designed specifically to effectively manage and provide rapid access to the most important information for decision -making Multi-sensor Algorithms to detect, diagnose and predict severe weather events.
The WDSS-II display n n The display is essentially just a GUIbased algorithm Any data that can be viewed in the display may be accessed by any other algorithm!
The WDSS-II display n The aim of this module is to present the underlying concepts. n n The version of the display you are using may be different. The display is constantly evolving in response to user feedback and requirements The knobology may be different Try to perform the steps as you go through this presentation
Operating systems n n Red Hat Enterprise 3 and 4 Windows XP (display only)
Starting up rssd n “rssd” runs as a daemon that controls: n n product notification (lets processes know that a new product is available to fetch) Data transfer between machines Step 1: configure. rssd. conf Step 2: type “rssd” at command-prompt n n n It should run until you reboot the machine – no need to start it every time Environment variable RMTPORT to set port Set RMTPORT to 50000 within NSSL
Starting up rssd Edit. rssd. conf (in your home directory) Client: 172. 16. *. * Client: 172. 18. *. * Path: /tmp Path: /data n n “Client” tells which computers are allowed to connect to this one “Path” tells which directories they are allowed to browse n No need to include subdirectories (. e. g. /data/may 3) if their containing dir is in the path.
rssd for multiple users n If you have multiple users on the same machine: n n set RMTPORT to /tmp: 50000 Can use any directory that is worldwriteable
Starting up wg (the WDSS-II GUI) n % wg –c my. Config. File. Name n n % wg n n n Starts the WDSSII GUI. Saves your session upon exit in my. Config. File. Name Also, loads the old session from my. Configfile. Name on startup. You can save multiple configurations (e. g. different settings for archived cases or real-time) Starts the WDSSII GUI Uses a default configuration file “. wgpref” Add “--verbose” to the command line to help diagnose run-time errors.
Wg Layout n Each tab (left) controls a different functionality: n n Control loaded products Controls for camera / readout / etc. Maps Connect to and manage data sources
Connecting to a real-time data source n n At NSSL, there a number of realtime data sources that can be connected to very simply: Click: “Sources” / “Add”
Connecting to a real-time data source machine n n n Click on the data source of interest Set the history (next slide) Click “add” Path to the index
Connecting to a real-time data source: setting the history n n n “History” is how many minutes (default = 30) that will be maintained in the index from the most recent time. Having a long history (e. g. “All”) can slow down initial connection times and use more memory – use only for archived cases. For real-time data, use an amount of time greater than the length of time you expect to loop.
Connecting to a real-time data source: additional notes n An index of existing real-time data sources may be listed in an XML file and used as your default selections in the sources page (see tensor: rindex. xml) n n May be changed in the “preferences” dialogue Real-time system status page: n n http: //tensor/cgi-bin/rupdate/radar. Update. pl? group=REALTIME Or just visit the tensor web site and click on “WDSSII Real-time Radar Status”
Connecting to an existing archive data source 1. 2. 3. 4. Give the source a name Enter the location of the index file Select the protocol (next slide) Set the history to “all”
Data sources: index protocols Indices are lists of data products and where they are located (local or remote). WDSSII natively supports three index protocols: n xmllb – a “linear buffer” file n n n Allows for real-time notification of new products Has a limited number of records (~ 32000) xml – a text index file orpg – an index of ORPG products Additional types may be added as plug-ins.
Sources: Loading a product n This is a product list for each source. n n n Single click on the product will open up “category” menu Double click on product will load the product in the first category Click on a time will load the product at that time
Sources: Other notes n n You can delete a source completely if you are finished with it. If not using a source, disconnecting may speed things up on a slower computer or network. If a real-time source stops updating, then try reconnecting. Change the history time by clicking here.
Viewing multiple products in one window n n Two or more image products from the same source cannot be viewed in the same window – one will always be in front. This is configrable Images from two different sources may be overlaid on each other: n n Use hide / only to avoid confusion The highlighted product in the product selection tab will always be in front
Viewing multiple products in one window Notes on time: n If browsing backward in time, the highlighted product is considered most recent – newer data from other sources will not be displayed n In Auto Update mode, simulation time is the most recent product from any source
Viewing multiple products in one window Controlling the product view: Don’t show the highlighted product Show only the highlighted product
Real-time: Auto update n n n Auto Update: listen for new products on an LB an automatically update to the latest one. Stepping backward in time will turn off Auto Update Can use auto-update when doing playback (w 2 simulator) also
Looping products n n Turn on a loop for the current window Looping controls are found under Options / Preferences
Color Key n n Turns on the color bar for all products in this window Can be edited (more on this in a later session)
Navigating a multi-slice product Green = current volume scan Red = previous volume scan Step back in time Step forward in time Step to Browse up/down most recent Browse in “virtual time up/down in current volume” (most recent slices) – volume this is how most WDSS-II algorithms operate
Multiple windows n n Controlled by “view” in top menu bar “New Window”: adds an empty new window “Set Main Window”: choose which window is attached to the controls at the bottom “Main Window” / “All windows”: turn on/off auto update, auto snapshot, and color key
Multiple windows: View Tiled without controls Right side
Navigation: mouse controls n n n Pan: left mouse, move in direction desired Zoom: middle mouse, move up or down Pop-up menu: right mouse
Right mouse pop-up menu n n n Swap with main window: put this one in the main window spot and connect to controls Set product / time / subtype / Auto update / Loop / Show Color Key / Show readout -- set these items for this window Group: sync with other window Rename: name this window Take snapshot Delete this window
Sync Group n n Put multiple windows in the same sync group” to make them pan / zoom / tilt / time match, etc. Flexible, exact synchronization types are controlled under the preferences window
Auto Snapshot n n n Take a snapshot each time a new product appears Controlled by preferences May be used to automatically generate static images, e. g. for putting on the web
Options menu (top bar) n Data readout options: n n n Raw value Lat / Lon Azimuth / Range (polar only) Height MSL and Above Radar Level Preferences
Options / Preferences / Windows n Each Sync group may be loosely or complexly coupled
Options / Preferences / Snapshot n Filename naming convention: n n n %p = product name and subtype %t = time %c = count n n n Use as an alternative to %t Simplifies scripts Snapshots are what’s visible in window n n Same size as window Unless “custom size”
Options / Preferences / Readout n n Same as options menu English / Metric – controls for data readout as well as tables, range rings, etc.
Options / Preferences / Display n n n Font size for icons, text Dynamic slice: increase value for higher resolution. This may slow down machines with limited graphic memory. Level of Detail culling: keep only the most important icons as you zoom out.
Options / Preferences / Cache n n Cache: purely memorydependent. Products are not preloaded into the cache. If you like lots of history or lots of products, use a bigger cache. Check memory usage with "top" and compare to your machine's memory Clear Color Maps if you edited one of them
Options / Preferences / Paths n Path to real-time index location n n This is where the list of sources for “Sources / Add” come from. Can create similar file on your machine n n n Can collaborate with others in lab machine: path-to-xml Can have multiple n Separate using ;
Options / Preferences / Loop n n Set the looping parameters The bar at the top gives a visual of how the loop will behave
Dynamic cross section / CAPPI n n To begin: choose “Create” / “Dynamic Slice or CAPPI” on the product navigation menu Any 3 D data field (polar or Lat/Lon) may be used as input
Dynamic cross section / CAPPI n n Click create again and draw a line with left mouse Click “Reset” to start from scratch
Dynamic cross section / CAPPI n Dynamically drag the small boxes to change the cross section: n n n Middle box: move cross section 2 nd / 4 th boxes: rotate cross section End boxes: move only this end, keeping the other fixed
Dynamic cross section / CAPPI n n n Choose “CAPPI” and draw a box with left mouse for a constantaltitude plot Middle blue bar or shift-middle controls altitude Note altitude at top
Dynamic cross section / CAPPI n n Shift-left mouse controls tilt Click “plan view” to go back to zenith viewing angle
Dynamic cross section / CAPPI n Turn off interpolation to see original data field
B-scan (table readout) n Check “table” in the navigation pane to bring up a table of raw data values
Tables, Trends, and Icons point data (such as cell centroids, rain gauges, etc) are stored in tables.
Tables, Trends, and Icons Two table types: n Pop-up window n Inview
Tables, Trends, and Icons Features: n Past tracks n Icons (w/ height poles for 3 D view) n Trends n Table sort
End of WDSS-II Training Module I