networkx

问题 I'm learning about graphs(they seem super useful) and was wondering if I could get some advice on a possible way to structure my graphs. Simply, Lets say I get purchase order data everyday and some days its the same as the day before and on others its different. For example, yesterday I had an order of pencils and erasers, I create the two nodes to represent them and then today I get an order for an eraser and a marker, and so on. After each day, my program also looks to see who ordered what,

问题 I have a complicated graph that I build using the python networkx library and I am trying to draw it in an understandable way. My data is structured in a way that I always have a central node, then a set of nodes that are at distance 1 from the center, and then another set of nodes which are at distance 2 from the center. By "distance" I mean the minimum number of edges before reaching the central node. Because of this structure, I would like to draw the graph in a radial fashion, where the

问题 my project's aim is to generate a network diagram, I've made a program that creates objects as swicth and nodes in python then it generates a gexf file and my question is : Can everybody tell me if he knows a way that allow us to choose a node image by using gexf, networkx or other tools. Thank you so much 回答1: NetworkX supports adding any form of data as attributes for a node such as an image: G=nx.Graph() G.add_edge(0,1, image=my_img) Essentially everything is stored as a dictionary

问题 I am using pygraphviz to create graphs for my project. I am unable to figure out how to center the xlabel of nodes and also how to change the color of xlabel. graph.add_node(row[3], color='goldenrod2', style='filled', shape='box', xlabel=round(self.pi_dict.get(row[3]), 2), fontname='calibri') I tried using xlp='10,10!' and xlabelfontcolor='red' . Both attributes don't seem to work. Where am I going wrong. As you can see in the attached fig. above, the xlabel is positioned by default towards

问题 I am using pygraphviz to create graphs for my project. I am unable to figure out how to center the xlabel of nodes and also how to change the color of xlabel. graph.add_node(row[3], color='goldenrod2', style='filled', shape='box', xlabel=round(self.pi_dict.get(row[3]), 2), fontname='calibri') I tried using xlp='10,10!' and xlabelfontcolor='red' . Both attributes don't seem to work. Where am I going wrong. As you can see in the attached fig. above, the xlabel is positioned by default towards

问题 I'm just picking up NetworkX and trying to learn how to use it with Shapefiles. Right now I have a .shp with a road network that I want to represent in a Graph with NetworkX, so that I can find the shortest path between 2 GPS points. I tried using this, but the problem is that when I run the write_shp() function I lose edges because DiGraph does not allow more than one edge between the same two nodes. The arrow in the figure below shows an example of an edge I lose by using a DiGraph. So I

问题 I'm just picking up NetworkX and trying to learn how to use it with Shapefiles. Right now I have a .shp with a road network that I want to represent in a Graph with NetworkX, so that I can find the shortest path between 2 GPS points. I tried using this, but the problem is that when I run the write_shp() function I lose edges because DiGraph does not allow more than one edge between the same two nodes. The arrow in the figure below shows an example of an edge I lose by using a DiGraph. So I

问题 I have made large graph with NetworkX with about 20,000 nodes. I would like to delete nodes with only one tie (or zero ties) to try to reduce the clutter. Since it is a very large graph I do not know the nodes by name or ID that have tie=1 or 0. Does anyone know how to delete these nodes without specifying the node ID or name? 回答1: Iterating on a Graph g yields all of g 's nodes, one at a time -- I believe you can't alter g during the iteration itself, but you can selectively make a list of

问题 I have made large graph with NetworkX with about 20,000 nodes. I would like to delete nodes with only one tie (or zero ties) to try to reduce the clutter. Since it is a very large graph I do not know the nodes by name or ID that have tie=1 or 0. Does anyone know how to delete these nodes without specifying the node ID or name? 回答1: Iterating on a Graph g yields all of g 's nodes, one at a time -- I believe you can't alter g during the iteration itself, but you can selectively make a list of

问题 I have made large graph with NetworkX with about 20,000 nodes. I would like to delete nodes with only one tie (or zero ties) to try to reduce the clutter. Since it is a very large graph I do not know the nodes by name or ID that have tie=1 or 0. Does anyone know how to delete these nodes without specifying the node ID or name? 回答1: Iterating on a Graph g yields all of g 's nodes, one at a time -- I believe you can't alter g during the iteration itself, but you can selectively make a list of