About SERVIR Viz
NASA World Wind serves as the core technology of SERVIR
Viz. SERVIR Viz is a version of NASA World Wind that provides
focused access to key WorldWind functionality identified
by the SERVIR project team. While SERVIR Viz is distributed
as a stand alone executable, the core WorldWind functionality
is available and the user interface has been designed to
provide quick access to SERVIR products relevant to the
Mesoamerica region in an interactive, 3D globe environment.
SERVIR Viz is open source, is compliant with current versions
of NASA World Wind, and supports the numerous plug-ins
and add-ons available from WorldWind Central. It is anticipated
that SERVIR Viz will take advantage of future versions
of World Wind.
System Requirements
Operating System
Monitor Resolution
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Intended uses of this application
SERVIR Viz was developed to support the seven countries
of Mesoamerica, SERVIR participants, educators,
scientists, decision-makers, and the general public by
providing access to NASA GEOSS data products and Meso-America
centric GIS data products (hosted at CATHALAC) in the NASA
World Wind GES (Geographic Exploration System). SERVIR
Viz is available for download free of charge to the general
public. SERVIR Viz is not intended for commercial use.
Download SERVIR Viz
SERVIR Viz Quick Start Guide
SERVIR VIZ Toolbar Icon Explanations
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Layer Manager – Turns the Layer Manager on and
off in the SERVIR-Viz window. The Layer Manager contains a number of data
layers and other features that can be turned on and off. |
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SERVIR WMS Interface – Allows SERVIR-Viz to
browse SERVIR WMS server archives and their contents. |
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Zoom to Location – Zooms SERVIR-Viz to a Latitude
and Longitude location based on user input. |
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Image Overlay – Allows user to load images including
2D maps onto the SERVIR-Viz terrain. |
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Placemarks – Allows user to mark places of interest
on the SERVIR-Viz terrain and export the locations to a Google Earth .kmz
file. |
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Measure Tool – Allows user to measure a point
to point distance in meters and provides the bearing in degrees. |
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GEOSS Decision Support - Provides the user with Global Earth Observation
System of Systems (GEOSS) data to look at together and study their interactions
on the SERVIR-Viz terrain. |
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GEOSS Weather – Provides a direct link to GEOSS
weather data to be viewed in SERVIR-Viz. |
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GEOSS Ocean/Marine Environments – Provides a
direct link to GEOSS ocean and marine environment data to be viewed in
SERVIR-Viz. |
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GEOSS Disasters – Provides a direct link to
GEOSS disaster data to be viewed in SERVIR-Viz. |
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GEOSS Climate - Provides a direct link to GEOSS climate data to be
viewed in SERVIR-Viz. |
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GEOSS Ecology - Provides a direct link to GEOSS ecology data to be
viewed in SERVIR-Viz. |
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Historical Earthquake Query – Allows the user
to search USGS Earthquake data with many variables (i.e. geographic area,
time, magnitude, etc.) and displays results on the SERVIR-Viz terrain. |
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Virtual Earth – Connects to and uses data from
Microsoft Local Live databases. This includes street maps, USGS imagery,
and hybrid maps. Provides adjustable data visibility levels and an address
finder. |
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Demis Worldmap – Adds a world map on the SERVIR-Viz
terrain that includes hydrography, cities, airports, roads, and relief
shading. |
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Topo Sheets – Adds topographic maps to the SERVIR-Viz
terrain for Mesoamerican countries. |
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Vector Layers – Activates the Vector Layers
under SERVIR Framework in the Layer Manager. The layers here include Main
Roads, Rivers, Lakes, Watersheds, etc. |
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Fire Alerts – Activates the Fire Alerts layer
under SERVIR Framework in the Layer Manager. The layer includes data from
the past 24 hours or the last 7 days. |
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Floods – Activates the Floods layer under SERVIR
Framework in the Layer Manager. The layer includes data from the last 14
days, labels for the flood areas, and historical data from years past. |
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Volcanoes – Activates the Volcanoes layer in
the Layer Manager. The layer includes data on volcanoes categorized by
the country where they are located. Tooltips about each location are visible
when label is hovered over with the cursor. Clicking the label activates
a hyperlink to get more specific information. |
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Placenames – Labels cities, counties, and countries
based on the current zoom level. |
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Boundaries – Draws country boundaries and U.S.
State boundaries. |
Other Key SERVIR VIZ User Interface Facts
& Plug-in descriptions
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The Layer Manager allows you to turn layers on and off SERVIR-Viz.
To expand the headings in the Label Manager, click on the triangles.
Turn layers on by checking the box next to the layer name. Turn layers
off by un-checking the box next to the layer name. You may have to zoom
in to see many of the layers. |
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The Add/Save Points tool to add and save points using the SERVIR
VIZ 3-d interface. The tool can be accessed through the through the Plug-Ins
dropdown menu. The points created are then saved in the Add/Save Point
layer in the Layer Manager. |
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Base
imagery for SERVIR VIZ includes:
- Landsat 7 – collected 1999-2003, 15 m resolution
- Blue Marble base
imagery– 1 km resolution, and
- USGS – topographic maps and
ortho-imagery
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Using the SERVIR VIZ Plug-ins
SERVIR - Add WMS Interface
The SERVIR WMS tool allows the user to browse, preview, and add data layers
to SERVIR-Viz. To search for data layers, select the server URL in the Select
Service table by clicking on the row to highlight the server. Selecting a
server will populate the Select Data Layer information box with the data
layers available from the highlighted WMS service. Select a specific layer
in the Select Data Layer information box by clicking on the name to highlight
the layer. The Data Info information box will show additional data about
the selected layer. To preview the selected layer, click the Preview tab
in the main SERVIR – Add WMS dialogue box. Use the Preview tab tools
to interact with the layer preview. To add this data layer to SERVIR-Viz,
make sure the Server tab is selected and then click the Add to SERVIR-Viz!
button. Close the SERVIR – Add WMS dialogue box by clicking the ‘X’ in
the upper right hand corner of the dialogue box. The data layer will be added
to the Layer Manager under SERVIR WMS Interface.
Zoom to Location
Enter the latitude and longitude of a location in the appropriate boxes depending
on coordinate system (decimal degrees or degrees, minutes, seconds).
Image Overlay
To overlay an image not served via WMS, click Add an Image. Navigate to the
directory where the image is located by using the Browse button. The image
is added in the Layer manager under Image Overlay. To turn off the overlay
image, click Turn Images OFF or uncheck the box in the Layer Manager. To
turn on the overlay image, click Turn Images ON or check the box in the Layer
Manager. To remove all image overlays from the screen and the Layer Manager,
click Clear all Images.
Placemarks
To add a placemark click Add a Placemark. Click on the area of interest on
the SERVIR-Viz terrain. A dialog box will appear. Enter the name to display
on the map when you point to the placemark. Enter a description to be viewed
in the lower left of the screen when the placemark is pointed to. To add
a hyperlink when clicked, enter the appropriate URL.
 
Measure Tool
Click the measure tool, the cursor should change. Then click on the SERVIR-Viz
terrain to start measuring. Move cursor to another point and click to stop
measuring. Click again to make the measurement line and results disappear.
GEOSS Decision Support
Click on the plus sign to expand the headings. Navigate to the data layer to
view. A list of layers should appear in the middle of the window. Click on
the layer and look at the bottom for a description of the layer. To add this
image to the SERVIR-Viz terrain, click load. To adjust the transparencies
use the opacity sliding bar. To see the layers animated, select multiple
entries. To clear the images press cancel. To remove the layers from the
screen uncheck the box by GEOSS Decision Support in the Layer Manager.
**GEOSS
Weather, GEOSS Ocean/Marine Environments, GEOSS
Disaster, GEOSS Climate,
and GEOSS Ecology all work in a similar manner.
Historical Earthquake Query
Choose your search method. Enter search limitations such as Starting and Ending
Year. This is the only information needed for a Global Search. For a rectangular
query, the decimal degrees need to be entered for the area to be searched.
To search the area currently viewed on the SERVIR-Viz terrain, click Get
from WW. This will automatically enter the coordinates of the rectangular
viewing area. For a radial query, enter the latitude and longitude for the
center of the search. To use the center of the current SERVIR-Viz view, click
Get lat/lon from WorldWind. This will automatically enter the current coordinate
of the center of the screen. Enter the search radius in kilometers. The default
value is 500 Km. When all of the parameters have been entered, click Query
Database. A list of the top 5 earthquakes will appear along with a summary
of the Total Earthquakes Found. Points will appear where the earthquakes
are located on the SERVIR-Viz terrain. Hover the cursor over a certain earthquake
to view details about that earthquake. To remove the results from your screen,
click Clear.
Virtual Earth
Choose between aerial imagery, road maps, or a hybrid map. Virtual Earth will also
zoom in to the address of an IP address by clicking the ‘Locate
Me’ by IP Address. Choose to look at different imagery by clicking the
buttons under Map Type. A business or an address can also be searched by using
Virtual Earth.
Add/Save Points
Make sure that the Add/Save Points layer is turned on in the Layer Manager.
Go to the Plug-Ins menu under Add/Save Points and move the cursor over to
the right to see the various options for adding/saving/deleting points. To
add a point, select Start Drawing and click the mouse in the desired location
for the point. When done adding points, select Stop Drawing. To save the
points to a file, select Save Points. If you have an X,Y,Z delimited file of points
with attributes (i.e. exported from a shapefile), you can load those points into Servir-Viz
by choosing Load Points. To remove unwanted points, select Delete Points, to start again (this
will only clear the points inside Servir-Viz, not any saved point files). The Placemarks options
are also located below the add/save points functionality for convenience; add an icon (placemark) by selecting Add an Icon.
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