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Unidata IDV Workshop for version 3.0u2 > Accessing and Displaying Data > Point Observations

3.7.5 Observation List Display
The Observation List Display Control shows a textual listing of observation data. We are going to look at some earthquake point data.

  1. If other displays and data are already loaded, select the Edit->Remove All Displays and Data menu item or the icon in the toolbar to clear them out.
  2. Load some point data.
    • Open the Data Source Chooser. Show popup
    • In the Data Source Chooser click on the Files tab.
    • Go to the point data directory: /data/idv/point/.
    • Select earthquake.nc (Note: not earthquake.csv)
    • Under the Data Source Type pulldown menu, select "Netcdf Point Data files"
    • Press Add Source
  3. Create the display
    • In the Fields panel select Point Data.
    • In the Displays select Point Data List and press Create Display
  4. Modify the displayed fields.
    • Press the Select Fields button
    • We see there are 4 fields shown and one field (var) not shown.
    • Select var and press Add
    • Change the order of the fields - select var and then press the up arrow button.
    • Press OK.
  5. Modify the listing.
    • Toggle Show Raw Data
    • Sort the columns by pressing the var column header.
    • Figure out what is the maximum depth of the observations.
  6. Export the data as a text CSV file.
    • Use File->Save->Export Table in the Point Data List display control.
    • Enter earthquake.csv
    • Read in this file from the File Chooser. Make sure you set the Data Source Type to "I'm Feeling Lucky"
    • Create another Point Data List display with this CSV data.

 


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Unidata IDV Workshop for version 3.0u2 > Accessing and Displaying Data > Point Observations