CYTOSCAPE NODE LOCATIONS RELATION FULL
The full code and data can be found in the followingįor more information, follow me on Twitter. If you want to try it on your own,Īnimation: Demo of the Graph Visualization using Cytoscape In the animated image below we illustrate the final visualization of the graph. Last but not least, once the graph is fully rendered we can run many searching and analysis algorithms on top of it. Which is a more sophisticated version of the force-directed layout. Which draws the graph in an aesthetically-pleasing way. Which algorithmically infers the positions of the nodes. Promise.resolve( $stylesheet ).then( getStylesheet ).then( applyStylesheet ) "source": str(source), # the source node id (edge comes from this node) "target": str(target), # the target node id (edge goes to this node) "directed": True, If int(source) <= NUM_NODES and int(target) <= NUM_NODES: # jump the first two lines, they contain some info for i, line in enumerate(f):Ĭontinue # get the source node and the target node The nodes are represented by their id with open( 'raw_data/out.subelj_jdk_jdk', 'r') as f: The normalized in-degree number as a score to help us better visualize the nodes:Įdges = # the final subset of edges # each line represents an edge between two nodes. Additionally,įor each node, we calculate the in-degree number which is the number of incoming edges. We also include additional rendering options. For each edge, it is mandatory to specify the Once we know the nodes, we select the edges between them. "selected": False, # the node is not selected "selectable": True, # we can select the node "locked": False, # the node position is not immutable "grabbable": True # we can grab and move the node "group": "nodes", # it belongs in the group of nodes "removed": False, "classes": package # the keyword 'classes' is used to group the nodes in classes "id": str(i + 1), # the string representation of the unique node ID "idInt": i + 1, # the numeric representation of the unique node ID "name": 'cls: ' + class_name + " pkg: " + package, # the name of the node used for printing "query": True, Package = '.'.join(full_name.split( '.')) # the package where the class belongs # stop when the limit is reached if i = NUM_NODES:įull_name = str(line) # the fill nameĬlass_name = full_name.split( '.') # only the class name Packages = # the set of packages for each node # each line represents one node with open( 'raw_data/ent.subelj_jdk_', 'r') as f: NUM_NODES = 50 # how many nodes to subselect Along with this, we include some attributes that define the rendering of the For each node, we extract the name of the class it represents and We start by selecting a subset of 50 nodes.
Thus, we transform the original data set by using this The Cytoscape JS library expects the data to be stored in a JSON file with a For this reason, just for demonstration purposes, we selectĪ subset of 50 nodes and all the edges between them. Is an immense number to load and render in the browser. The data set is stored in a CSV file format and it contains 6,434 nodes and 150,985 edges, which The dataset we use is the class dependency network of the JDK 1.6.0.7 framework downloaded from theĮach node represents one class and an edge between them means there is a dependency between the classes. Which is a common playground to start with Cytoscape. To demonstrate the capabilities of the Graph Visualization Libraries we use theĪs a starting point, we use the code provided in the following
In a similar way, we show how the interactive graph visualization can be beneficial in discovering data patterns. Visualization gives you answers to questions you didn’t know you had. Which is quite aligned with the following quote: "The Importance of Interactive Data Visualization", Of interactive visualization, we already discussed in one of the previous blogs, This time we go step further and demonstrate what means an interactive graph visualization. We elaborated more on the common data formats, the existing and popularĭata repositories, the JavaScript libraries as well as some GUI-based tools. We dived in the Graph-Visualization ecosystem. JavaScript: Graph Visualization using Cytoscape JS
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