{ "item_title" : "User Manual for the Data-Series Interface of the Gr Application Software", "item_author" : [" U. S. Department of the Interior "], "item_description" : "Gr is a visualization and analysis application for displaying, editing, and printing X-Y data. It can be used to display or ani-mate vector data, particle paths, or two-dimensional (2D) data fields, but only the data-series interface is described in this docu-ment. Gr works with any data series that describes Y as a function of X, that is an ordered set of X-Y pairs. These pairs could represent points in space or form a time series, which is an ordered set of time-value pairs. Gr allows the user to zoom in and out and pan within a graph. It also offers several ways to edit or manipulate data, and can accept data in several file formats.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/1/49/744/520/1497445205_b.jpg", "price_data" : { "retail_price" : "16.99", "online_price" : "16.99", "our_price" : "16.99", "club_price" : "16.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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