Unidata IDV Workshop for version 3.0u2 > Accessing and Displaying Data > Upper Air Displays
3.8.1 Single Level Point Data Displays
The IDV can plot upper level maps as point displays from
the RAOB data.
- Open the RAOB Single Level Data Source Chooser
- Open the
Data Source Chooser. 
- In the
Data Source Chooser click on the
Point tab.
- Click on the
Upper Air tab.
- In the
Server: entry box, select the remote ADDE server
adde.ucar.edu. In the
Data Type: entry box, select the
Upper Air Data entry.
- Click on
Connect.
- The IDV will connect to the ADDE server at adde.ucar.edu and
download metadata about available RAOB data. You can load data
in by relative times, or by absolute times. Select the
Relative times radio button and the
4 most recent times option.
- From the
Station Model list, select
Upper Air.
- From the
Level list, select
500 for the 500 millibar level.
- Click the
Add Source button.
- If the
Create display option was checked in
the chooser, a Point Data Plot will automatically
be created. If not, create one.
- In the
Field Selector window create a
Point Data Plot display using
the RAOB Point Data field.
The point data plot appears in the main window.
- Set the projection to the continental U.S.
( menu).
- Use the
Point Data Plot control to change the
plot density to show more stations.
- Remove the display
- Now, plot data at a different level and region.
- In the
Field Selector window select a different
level (e.g. 250 mbar) in the Level tab of the
Data Subset panel.
- Under the
Region tab, select a region of interest.
- Click the
Create Display button.
-
- Remove All Displays and Data
- If other displays and data are already loaded, select the
menu item
or the
icon in the toolbar to clear them out.
Unidata IDV Workshop for version 3.0u2 > Accessing and Displaying Data > Upper Air Displays
