I have a graph with some edges. Each edge has a weight/cost and also a label/type, which could be red and green. I know that if I run Dijkstra’s algorithm it will find the shortest/cheapest path from the weights of all edges. However, my issue is that depending on which type of edge it chooses, addition…
Tag: networkx
Networkx: Network graph from pandas dataframe
I have the following dataset: The dataframe shows when different investment firms have invested in the same Company during a year. I want to create a network graph of the Connections between the Firm_ID only. For example Ampersand and BancBoston have both invested in the same company and should therefore be c…
determine chain of predecessors and successor from a list of first predecessor in python
I have a list like the following One item can have multiple immediate incoming ids, like in case of id=3, which is imediately preceeded by id=17 and id=18. I need a python code to determine this result by following the chain of predecessors both ways: (it is best to read the column all_successors to understan…
NDlib Independent Cascade initialisation is giving me an error
I am using NDlib to try and model an Independent Cascade diffusion process over a graph. I am trying to set some initial seed nodes using config.add_model_parameter(‘Infected’, {0, 10, 100}) (the rest of my code to this point is the same as the tutorial example found here) but I get the error User…
add_star function not adding attributes in Networkx
For some reason add_star() is not inputting the attributes to the nodes. Any idea what’s going on?? Versions: Python 2.7 Networkx 2.2 Answer If by attributes you mean the edge weights, the weights are added as edge attributes:
Duplicate edges in .gml file using networkx.read_gml python
I want to use networkx in python to read a .gml file. However when I do, it raises the error which is true that in the .gml file there are duplicate edges. Is there any way to read a .gml file with duplicate edges without raising an error? Answer You should simply add “multigraph 1” to the file he…
Contracted nodes automatically in Networkx
I have problem, I wish could automatically merge the nodes by inserting an if condition. I have this dataframe: I created this graph: What I would like is to merge the nodes with Weight <15 and not taking the nodes 10.0.11.100,10.0.12.100,10.0.13.100,10.0.14.100 using an if condition. I tried with this cod…
Networkx: Update single attribute of all nodes within a graph without for loop
I have some code that can update a graph’s attribute: This doesn’t update the node attribute, and instead applies the update to the graph as a separate entity. Is there any way to mass-update a single attribute of an entire set of nodes without sticking in for node in (range(0, len(graph.nodes)): …
Plot cumulative distribution with networkx and numpy
I want to implement the cumulative distribution for a graph. Here is my code: To plot cumulative I know that I must have at the x-axis the degree and in the y-axis the samples with value > Degree. The result using my code is the following: But the expected result must be something like this: I am not sure …
Creating multiple graphs using gnp_random_graph
While using the NetworkX package I was tasked with creating multiple random graphs with a given n number of nodes and p probability, this is my code: But, every iteration creates the same exact graph (even the edges are completely the same) Does anyone have a clue what might be wrong? Update: After trying to …