Unidata IDV Workshop for version 6.3 > Accessing and Displaying Data > Point Observations

Leave the earthquake point data source and list display.

1. Create a Point Data Plot display
   • In the Fields panel select Point Data.
   • In the Displays select Point Data Plot and press Create Display
2. If the Earthquake station model is not selected for display then select it with the Change button. This station model scales by the var field and colors by Altitude.
3. Turn on the bounding box if it is not on with the View→Show Wireframe Box menu.
4. Tilt the view to be looking from the south. Note the map is at the bottom of the box and the earthquake symbols are below that.
5. Change the vertical scale of the display.
   • Find the altitude (depth) range of the data from the Observation List Display created in the prior exercise.
   • Select the View→Viewpoint→Vertical Scale menu.
   • Enter the min value found in the Observation List display.
   • Enter 0 for the max value.
   • Press Apply
   • Note the map is now at the bottom. Raise the map by bringing up the Background Maps display control window, select the Display tab and use the Map Position slider, close the window.
   • If happy with the vertical scale press OK button.
6. Note the gray scale on the default background is difficult to see. Change the background color.
   • Select the View→Color→Set Colors menu item.
   • Press the Set button in the background row.
   • Choose an appropriate color (e.g., light blue) and press OK
   • Press the Apply button. If things look ok press OK
7. Figure out what depth range contains most of the earthquakes.
   • Rotate to a southern view. You may need to disable Declutter.
   • Add a Location Indicator display with the Displays→Special→Location Indicator menu.
   • Move the origin point with the left mouse button.
   • Move the bearing point with a control-key/left mouse button.
   • Look at the altitude readouts.
   • Go to the Display tab and turn on Solid:X and Solid:Y checkboxes.
   • Rotate the display and drag the origin point up and down.
   • Change the Transparency to 50%

 

Unidata IDV Workshop for version 6.3 > Accessing and Displaying Data > Point Observations