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WDSS-II Training Module I. An overview of the WDSS-II display. What is WDSS-II?. 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.
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WDSS-II Training Module I An overview of the WDSS-II display
What is WDSS-II? • Infrastructureto 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 4D 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 • The display is essentially just a GUI-based algorithm • Any data that can be viewed in the display may be accessed by any other algorithm!
The WDSS-II display • The aim of this module is to present the underlying concepts. • 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 • Red Hat Enterprise 3 and 4 • Windows XP (display only)
Starting up rssd • “rssd” runs as a daemon that controls: • 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 • 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 • “Client” tells which computers are allowed to connect to this one • “Path” tells which directories they are allowed to browse • No need to include subdirectories (.e.g. /data/may3) if their containing dir is in the path.
rssd for multiple users • If you have multiple users on the same machine: • set RMTPORT to /tmp:50000 • Can use any directory that is world-writeable
Starting up wg (the WDSS-II GUI) • % wg –c myConfigFileName • Starts the WDSSII GUI. Saves your session upon exit in myConfigFileName • Also, loads the old session from myConfigfileName on startup. • You can save multiple configurations (e.g. different settings for archived cases or real-time) • % wg • Starts the WDSSII GUI • Uses a default configuration file “.wgpref” • Add “--verbose” to the command line to help diagnose run-time errors.
Wg Layout • Each tab (left) controls a different functionality: • Control loaded products • Controls for camera / readout / etc. • Maps • Connect to and manage data sources
Connecting to a real-time data source • At NSSL, there are a number of real-time data sources that can be connected to very simply: • Click: “Sources” / “Add”
Connecting to a real-time data source machine Path to the index • Click on the data source of interest • Set the history (next slide) • Click “add”
Connecting to a real-time data source: setting the history • “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 • 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) • May be changed in the “preferences” dialogue • Real-time system status page: • http://tensor/cgi-bin/rupdate/radarUpdate.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 • 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: • xmllb – a “linear buffer” file • 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 • This is a product list for each source. • 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 • 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 • 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: • 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: • If browsing backward in time, the highlighted product is considered most recent – newer data from other sources will not be displayed • 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 highlighted product
Real-time: Auto update • 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 (w2simulator) also
Looping products • Turn on a loop for the current window • Looping controls are found under Options / Preferences
Color Key • 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 forward in time Step back in time Step to most recent time Browse up/down in “virtual volume” (most recent slices) – this is how most WDSS-II algorithms operate Browse up/down in current volume
Multiple windows • 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 Tiled without controls Right side
Navigation: mouse controls • Pan: left mouse, move in direction desired • Zoom: middle mouse, move up or down • Pop-up menu: right mouse
Right mouse pop-up menu • 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 • 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 • 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) • Data readout options: • Raw value • Lat / Lon • Azimuth / Range (polar only) • Height MSL and Above Radar Level • Preferences
Options / Preferences / Windows • Each Sync group may be loosely or complexly coupled
Options / Preferences / Snapshot • Filename naming convention: • %p = product name and subtype • %t = time • %c = count • Use as an alternative to %t • Simplifies scripts • Snapshots are what’s visible in window • Same size as window • Unless “custom size”
Options / Preferences / Readout • Same as options menu • English / Metric – controls for data readout as well as tables, range rings, etc.
Options / Preferences / Display • 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 • Cache: purely memory-dependent. 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 • Path to real-time index location • This is where the list of sources for “Sources / Add” come from. • Can create similar file on your machine • Can collaborate with others in lab • machine:path-to-xml • Can have multiple • Separate using ;
Options / Preferences / Loop • Set the looping parameters • The bar at the top gives a visual of how the loop will behave
Dynamic cross section / CAPPI • To begin: choose “Create” / “Dynamic Slice or CAPPI” on the product navigation menu • Any 3D data field (polar or Lat/Lon) may be used as input
Dynamic cross section / CAPPI • Click create again and draw a line with left mouse • Click “Reset” to start from scratch
Dynamic cross section / CAPPI • Dynamically drag the small boxes to change the cross section: • Middle box: move cross section • 2nd / 4th boxes: rotate cross section • End boxes: move only this end, keeping the other fixed
Dynamic cross section / CAPPI • Choose “CAPPI” and draw a box with left mouse for a constant-altitude plot • Middle blue bar or shift-middle controls altitude • Note altitude at top
Dynamic cross section / CAPPI • Shift-left mouse controls tilt • Click “plan view” to go back to zenith viewing angle
Dynamic cross section / CAPPI • Turn off interpolation to see original data field
B-scan (table readout) • 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: • Pop-up window • Inview
Tables, Trends, and Icons Features: • Past tracks • Icons (w/ height poles for 3D view) • Trends • Table sort