Unexpected error while drawing networkx graph

-
7

I have a simple graph and need to draw it on my screen, here is my code:

def gera_grafo(matriz):
grafo = nx.to_networkx_graph(matriz, create_using=nx.Graph)

nx.draw(grafo)
plt.show()

return grafo

Where matrix is an adjacency list containing the weights of the connections. The coda was working just fine, but i had to create a new python virtualenv and since then, even though all the required libraries are correctly installed it throws an error on the nx.draw() call. The error I got is:

    Traceback (most recent call last):
  File "/run/media/luisola/A216C03316C009ED/Users/Luis/Documents/Iniciação Científica/inicia-o-cient-fica/venv/lib/python3.9/site-packages/networkx/utils/decorators.py", line 396, in _random_state
    random_state_arg = args[random_state_index]
IndexError: tuple index out of range

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/run/media/luisola/A216C03316C009ED/Users/Luis/Documents/Iniciação Científica/inicia-o-cient-fica/criacao_do_grafo.py", line 58, in <module>
    grafo = gera_grafo(matriz)
  File "/run/media/luisola/A216C03316C009ED/Users/Luis/Documents/Iniciação Científica/inicia-o-cient-fica/criacao_do_grafo.py", line 39, in gera_grafo
    nx.draw(grafo)
  File "/run/media/luisola/A216C03316C009ED/Users/Luis/Documents/Iniciação Científica/inicia-o-cient-fica/venv/lib/python3.9/site-packages/networkx/drawing/nx_pylab.py", line 123, in draw
    draw_networkx(G, pos=pos, ax=ax, **kwds)
  File "/run/media/luisola/A216C03316C009ED/Users/Luis/Documents/Iniciação Científica/inicia-o-cient-fica/venv/lib/python3.9/site-packages/networkx/drawing/nx_pylab.py", line 333, in draw_networkx
    pos = nx.drawing.spring_layout(G)  # default to spring layout
  File "/run/media/luisola/A216C03316C009ED/Users/Luis/Documents/Iniciação Científica/inicia-o-cient-fica/venv/lib/python3.9/site-packages/decorator.py", line 214, in fun
    return caller(func, *(extras + args), **kw)
  File "/run/media/luisola/A216C03316C009ED/Users/Luis/Documents/Iniciação Científica/inicia-o-cient-fica/venv/lib/python3.9/site-packages/networkx/utils/decorators.py", line 400, in _random_state
    raise nx.NetworkXError("random_state_index is incorrect") from e
networkx.exception.NetworkXError: random_state_index is incorrect

Is this an error on my code? If so, what can i do? Thanks in advance

python networkx
Share
Improve this question

Comments

Post a Comment

Popular posts from this blog

Meaning of `{}` for return expression

-
15 1 I found by accident that the following compiles: #include <string> #include <iostream> class A{ int i{}; std::string s{}; public: A(int _i, const std::string& _s) : i(_i), s(_s) { puts("Called A(int, const std::string)"); } }; A foo(int k, const char* cstr){ return {k, cstr}; // (*) } int main(){ auto a = foo(10, "Hi!"); return 0; } The line of interest is (*). I guess the function foo is equivalent to: A foo(int k, const char* str){ return A(k, cstr); } However, is there a special name for this mechanism in (*)? Or is it just the simple fact that the compiler knows which constructor to call due to the return type? ...
Read more

Get current scroll position of ScrollView in React Native

-
Is it possible to get the current scroll position, or the current page of a <ScrollView> component in React Native? So something like: <ScrollView horizontal={true} pagingEnabled={true} onScrollAnimationEnd={() => { // get this scrollview's current page or x/y scroll position }}> this.state.data.map(function(e, i) { <ImageCt key={i}></ImageCt> }) </ScrollView> Try. <ScrollView onScroll={this.handleScroll} /> And then: handleScroll: function(event: Object) { console.log(event.nativeEvent.contentOffset.y); }, Disclaimer: what follows is primarily the result of my own experimentation in React Native 0.50. The ScrollView documentation is currently missing a lot of the information covered below; for instance onScrollEndDrag is completely undocumented. Since everything here relies upon undocumented behaviour, I can unfortunately make no promises that this information will remain correct a ...
Read more

flutter websocket connection issue

-
I am trying to develop a flutter app which connects to the server and exchanges data using websocket. The server is in .Net Core and using Asp.Net Core Websockets to implement this functionality. The problem I am facing is, my flutter app is not able to connect to the server and throws following error. E/flutter (31498): [ERROR:topaz/lib/tonic/logging/dart_error.cc(16)] Unhandled exception: E/flutter (31498): WebSocketChannelException: WebSocketChannelException: WebSocketException: Connection to 'http://127.0.0.1/client#' was not upgraded to websocket E/flutter (31498): #0 new IOWebSocketChannel._withoutSocket.<anonymous closure> (package:web_socket_channel/io.dart:83:24) E/flutter (31498): #1 _invokeErrorHandler (dart:async/async_error.dart:13:29) E/flutter (31498): #2 _HandleErrorStream._handleError (dart:async/stream_pipe.dart:286:9) E/flutter (31498): #3 _ForwardingStreamSubscription._handleError (dart:async/stream_pipe.dart:168:13) E/flutter (3149...
Read more