/**
* create a 1-d String array from a network's node attributes, for easy transmission to R. use
* this format for each attribute of each node: nodeName::attributeName::value
*
* @param network a gaggle network
* @return the network's node attributes as a string array
*/
protected String[] networkNodeAttributesToStringArray(Network network) {
String[] attributeNames = network.getNodeAttributeNames();
// System.out.println (" nnatsa, attribute name count: " + attributeNames.length);
ArrayList<String> list = new ArrayList<String>();
for (String attributeName : attributeNames) {
// System.out.println (" nnatsa, attribute name: " + attributeName);
HashMap attributeHash = network.getNodeAttributes(attributeName);
// can't remove this warning until Network is genericized in next api release:
String[] nodeNames = (String[]) attributeHash.keySet().toArray(new String[0]);
for (String nodeName : nodeNames) {
// System.out.println (" nnatsa, node name: " + nodeName);
Object value = attributeHash.get(nodeName);
String terseForm = nodeName + "::" + attributeName + "::" + value.toString();
list.add(terseForm);
} // for n
} // for i
return list.toArray(new String[0]);
} // networkEdgeAttributesToStringArray
