The GreenGlass Collection Visualization tool. (Collection > VISUALIZE) helps you see and understand your collection in new ways and prepares you for interaction with the GreenGlass Query Builder. Data for your monograph collection is provided in a graphical and a tabular view.
When you open the Visualization Tool, the first view of your monograph collection will be an LC and/or NLM subject distribution. You can change the distribution type using the Distribution drop-down menu for a different view into your collection. Available distribution types include:
|SUBJECT (default)||Collection is distributed by LC and/or NLM subject.|
|DEWEY||Collection is distributed by Dewey call numbers.
Dewey libraries or libraries with significant parts of the collection cataloged in Dewey will see this distribution option. Even if your library uses Dewey call numbers or another classification scheme, we have associated LC call numbers whenever possible.Note:
|COLLECTION||Collection is distributed by collection location (e.g., Music and Dance Library).|
|LOCATION||Collection is distributed by shelving location (e.g., General stacks).|
|RECORDED USES||Collection is distributed by recorded uses, which may include additional in-house use tallies like re-shelving counts, browses, or reading room loans.|
|LAST CHARGE DATE||Collection is distributed by last charge date. If the last charge date is not available but the last return date is, the last return date has been used in its place.|
|YEAR PUBLISHED||Collection is distributed by the year the items were published.|
|YEAR ADDED||Collection is distributed by the year items were added to your collection.|
|PRIMARY LANGUAGE||Collection is distributed by the primary language of the items.|
|Comparison groups||Available comparator types include:
When this distribution type is selected, a "same edition" hyperlink will appear by default (e.g., Comparator libraries (same edition)). You can click this hyperlink to switch to an "any edition" view of the overlap.
Note: Same and any edition tallies will match if there are no other editions of a work. If they don't match, any edition holdings will always be larger.
The graphical view presents a bar chart of your chosen distribution type.
- The vertical axis indicates the number of items.
- The horizontal axis displays each value associated with the chosen distribution type. When you hover over a given value, the legend above the
chart displays the exact number of items held in that value.
You can apply an overlay to gain further insight in the graphical view. When applied, the bar chart is overlaid with one to three different shades of green and the legend displays how each color is defined (e.g., if you select RECORDED USES, dark green = 1 use, medium green = 2 uses, and light green = 3+ uses).
Select one of the following overlays from the Overlay drop-down menu.
|NONE (default)||No overlay is applied to your monographic collection distribution.|
|RECORDED USES||Collection distribution is overlaid with the recorded usage for items in your collection. Legend values include:
|HATHITRUST||Collection distribution is overlaid with the number of items in your collection that are represented in HathiTrust. Legend values include:
|CHOICE||Collection distribution is overlaid with the number of items in your collection that have been reviewed in CHOICE. Legend values include:
|NON-ENGLISH||Collection distribution is overlaid with the number of items in your collection that are not in English. Legend values include:
|ALLOCATED FOR RETENTION||Collection distribution is overlaid with the number of items in your collection that are allocated for retention. Legend values include:
|EBOOKS||Collection distribution is overlaid with the number of titles for which you own both print and electronic editions. Legend values include:
A print title and electronic title are considered a match if:
The tabular view appears under the graphical view in the GreenGlass Collection Visualization tool.. The information presented matches what is presented in the graphical view but includes interactive item-level tallies. Click on the green tally number in the Item column to see the corresponding lists of items. A list of items contained within that Distribution category appears containing the Call Number, Location, and Title for each item. From the item list, you can:
- Click EXPORT RESULTS to download a spreadsheet of the item list.
- Click the green greater than sign to view additional data elements about each individual title. See Online Item Lists for descriptions of the data elements.
- Click BACK TO CHART to return to the GreenGlass Collection Visualization tool.
WorldCat holdings tallies
Before your library makes decisions about which titles to retain and which titles to withdraw, it will be important to know whether they are widely or scarcely held by other libraries. For each title in GreenGlass, the number of libraries that have a holding set in WorldCat on the same or related edition is tracked and leveraged to note if the title is at risk and how easily it could be borrowed from another library.
WorldCat holdings tallies are embedded throughout GreenGlass query tools and online item displays. They are included as separate columns in item lists exported from GreenGlass allowing for additional filtering, sorting, and analysis to occur outside of the application.
Under WorldCat Holdings & Retentions, GreenGlass tallies the number of libraries in the state or province that have a holding set on the same or related edition. GreenGlass also tallies the number of libraries in the country and in the world that have a holding set. HathiTrust flags are set for each title in GreenGlass, indicating whether or not it is represented in the HathiTrust digital corpus and whether or not it is in the public domain.
If your library is a member of a group project, GreenGlass automatically displays the number and the names of participant libraries that also hold the title.
Note: GreenGlass overlap tallies provide crucial decision support for each title, they do not support gap analysis or prospective collection building activities. GreenGlass comparisons do not provide information about resources that your library does not own.
In addition to these standard GreenGlass overlap tallies, your library or your shared-print project can establish up to six additional groups of comparator libraries. These custom groups are determined at the start of the project and remain unchanged for the duration. The comparator libraries appear under the Details about holdings drop-down.
Custom comparator groups help users understand the extent to which each title in the analysis is widely or scarcely held by groups of libraries that have local significance. Take care to ensure that your comparators will add real value to local decision-making processes. The goal is to capture information that will have bearing on whether or not a local holding should be retained, shared, or withdrawn. As you can see, overlap thresholds in multiple categories can be combined in the GreenGlass Query Builder.