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  • 2.4 Saving Visualizations for Publication

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2.4.1 Saving Files from the Data Manager

The Sci2 Sci2 Tool supports various image output formats. When in GUESS, use 'File> Export Image' to export the current view or the complete network in diverse file formats such as jpg, png, raw, pdf, gif, etc.
To save image files created outside of GUESS, such as Circular Hierarchies or Geospatial Visualization, right-click on the PostScript file in the data manager and then click 'save'. Select 'PostScript' and then save the file to your desired directory.

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2.4.2 Creating Legends for Visualizations

Watch the video of this workflow:


Widget Connector
urlhttp://www.youtube.com/watch?feature=player_embedded&v=DiKK6hcRp08


2.4.2.1 Saving Visualizations from GUESS

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When the PDF is opened in Inkscape all of the various components of the visualization, in this case nodes, edges, and labels, will be grouped together. The next step will be to ungroup those components so you can access and edit them individually. To perform an ungroup, first left-click on the graph so the entire image is selected:

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The next step is to begin creating your legend. How you create the legend depends on the values for attributes of the nodes and edges in your network. This is the information you want to convey to those who see your visualization. In the following steps we will be working with the network we generated from the florentine.nwb file in section 2.7 8 Visualizing Data with Sci2 on the Sci2 wiki . As you may remember, the nodes have been sized based on the wealth of the family represented by the node and colorized based on the number of priorates a particular family held. The edges have been colorized based on the type of relationship that connects two families: business tie or marriage. So, based on these attributes we are going to create titles and subtitles for our legend:

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Info

In order to determine the values for our symbols we will need to refer back to the original visualization. In GUESS you can use the information window to view these values. Simply hover your mouse over the node or edge you wish to examine and view its properties in the information window:

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To find the values for attributes of nodes and edges in Gephi, view the graph in the Overview window of Gephi. Then use the  tool and label the edges and the nodes:

Once you have chosen which attribute to label the nodes or edges with, they can be applied by clicking the label tool: . It is a good idea to label nodes and edges separately. In other words, apply the node labels and then remove them before you apply the edge labels. Otherwise, the graph will be too crowed with node and edge labels to identify values to use in your legend. Typically, it can be difficult to identify edge attribute values because there are so many edges to be labeled that it can become crowded very quickly. One trick when dealing with a lot of attribute labels is to use the Gephi filters to filter either nodes or edges by certain attributes. To pull up the filter window in Gephi go to "Window > Filters" at the top of the tool:

The filter window will appear at the right-hand side of the tool. You can choose to filter edges by the edge weight (number of co-authored papers) attribute by dragging the edge weight filter into the queries section below:

Use the slide bar at the very bottom of the window to filter the edges. Drag the bar and then click filter:

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The next step is to create two three symbols below the "Edge Color" title to represent the two three types of relationships in this network. Use the rectangle  tool to create the symbols:

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The final step is to label your symbols in your legend using the  text tool:

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The resulting visualization will look something like this:

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