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Unidata IDV Workshop for version 3.0u1 > Accessing and Displaying Data > Point Observations

3.7.2 Subsetting Point Data
You can do time binning and spatial subsetting for 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 in the file /data/idv/point/madis.nc. Make sure you the Data Source type select "netCDF Point Data files"
  3. Create a Point Data Plot. Say Yes to seeing all of the times. Notice, the number of times. Not very workable.
  4. In the display control window go to the Times tab. Turn on the enabled button and enter 5 minutes for the Only Show Every. Press return.
  5. Note: this isn't time binning. This just skips the obs.
  6. Remove that display.
  7. Now we're going to bin the times.
    • Bring up the Properties dialog for this madis point data. (Double click or right click on the data source entry in the Field Selector).
    • Choose a 15 minute Bin Size and press OK.
    • Now, create a point data plot again.
  8. Spatially subset the point data.
    • Bring up the Properties dialog for the madis point data. Go to the Spatial Subset tab.
    • Zoom in over Colorado and drag a box with the left mouse to select a region.
    • Turn on Reload Displays and press OK.

 


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Unidata IDV Workshop for version 3.0u1 > Accessing and Displaying Data > Point Observations