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Sixty-three elements are complete in no IDN Collections and some NASA Collections. These are the bubbles on the X axis in the chart. None are complete in more than nine NASA collections. Many of these elements are related to keyword thesaurus and additional attribute information. It is interesting to note that keyword thesaurus information is completely absent from the IDN collections, reflecting the fact that GCMD keywords are used in those collections, perhaps as a requirement of participation in the IDN. To identify this items, click on the map above to access the spreadsheet and select the Some NASA and No IDN filtered view from the toolbar.

NASA Exists vs IDN Exists

Chart 2 below compares item existence (elements and attributes) in NASA Collections with IDN collections.  The X axis shows the number of NASA collections that include an item. The Y axis shows number of IDN collections that include an item.  The bubble size shows the number of items included in the 2 collections.

The large blue bubble in the upper right corner of the plot shows the items (elements and attributes) that exist is all 18 NASA collections and in all 8 IDN collections.  This bubble includes 51 items, as shown in the legend.  The large red bubble in the lower left corner of the plot shows items that exist is one NASA collection and in zero IDN collections.  This bubble includes 44 items, as shown in the legend. The data for Chart 2 is accessible in Google Sheets.  To view the data and bubble chart in Google Sheets click on the image. 

Chart 2: NASA EXIST vs IDN Exists

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Accessing the Chart

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