2.7 Globe Display
The illustration below shows an IDV Globe Display of
GFS numerical weather prediction model output of
mean sea level pressure (as color-shaded image and contour lines)
and 50 m/s wind speed isosurfaces showing the jet streams.
Image 1: Globe Display
In the Globe Display version of the IDV, the displays and maps are projected
onto a spherical globe. The globe can be rotated by hand or automatically,
along with the usual zooming and time animation of displays on the globe.
To create a Globe View window, use the
menu. Uncheck the menu to turn
off the box in the display.
This section describes how to make plots of global satellite imagery on the
The set of steps include:
2.7.0 Choosing Global Satellite Imagery
After starting the Globe version of the IDV, select the
Image Chooser in the
- Connect to the adde.ucar.edu server using
- From the
Image Data Type selector, choose the
Global Thermal IR composite images type.
- Click the
Add Source button to load the data source.
2.7.1 Displaying the data
Once the data source has been selected, from the Field Selector
you can create the display by doing the following:
- Select the "Global Thermal IR composite images" data source
Data Sources panel.
- Select the "Band: 1" field in the
- Select "Image Display" in the
- Click the
Create Display button to create
2.7.2 Using the display
When the data are displayed, the default view will be from the
center of the image (0N, 0E). You can move the display using the standard IDV
zoom, pan and rotate functions.
For this exercise try the following:
Any suitable data with navigation information (latitude, longitude, and
altitude) that the IDV can handle can be plotted on the globe
display. Review the section on
Plots from Gridded Data.
- Use the menu to change the
viewpoint to an are of interest.
- Start the image animation using the
- Use the menu or the Viewpoint Toolbar to
set the view to the Western Hemisphere.
- Use the menu. Check
this on to spin the globe along the vertical axis. You can right click
on the Viewpoint Toolbar's Auto-rotate button to change the speed of
- Click anywhere in the view to stop the rotation.