1. Remove all data and displays.
2. Recreate the Transect Drawing Control (Transects→Edit menu).
3. Select the left Transect View.
4. Load in some surface observation data.
5. In the Point Data Plot turn off decluttering.
6. Whoa! That's not good.
7. The Transect View shows everything on the surface of the earth that falls within the lines that are orthogonal to the end points.
8. Let's change that.
   • Show the Transect View properties dialog with the View→Properties menu.
   • Under the Transect tab change the Max distance to 30 KM and hit Apply.
   • In the Map View drag the transect line around.
   • Create a regular point data plot in the Map View

Unidata IDV Workshop for version 6.2u2 > Accessing and Displaying Data > Transect Views