Início / coding / Perguntas / 79046568
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carpediem
Asked: 2024-10-02 19:42:30 +0800 CST

Animação Netgraph — como exibir números de quadros

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Estou tentando adicionar um número de quadro a uma visualização de simulação modificada daqui . Existe alguma maneira simples de adicionar um número de quadro a esta animação para que ela seja exibida como parte do título do enredo?

import numpy as np
import matplotlib.pyplot as plt

from matplotlib.animation import FuncAnimation
from netgraph import Graph

# Simulate a dynamic network with
total_frames = 10
total_nodes = 5
NODE_LABELS = {0: 'A', 1: 'B', 2: 'C', 3: 'D', 4: 'E'}
NODE_POS = {0: (0.0, 0.5), 1: (0.65, 0.25), 2: (0.7, 0.5), 3: (0.5, 0.75), 4: (0.25, 0.25)}
adjacency_matrix = np.random.rand(total_nodes, total_nodes) < 0.25
weight_matrix = np.random.randn(total_frames, total_nodes, total_nodes)

# Normalise the weights, such that they are on the interval [0, 1].
# They can then be passed directly to matplotlib colormaps (which expect floats on that interval).
vmin, vmax = -2, 2
weight_matrix[weight_matrix<vmin] = vmin
weight_matrix[weight_matrix>vmax] = vmax
weight_matrix -= vmin
weight_matrix /= vmax - vmin

cmap = plt.cm.RdGy

fig, ax = plt.subplots()
fig.suptitle('Simulation viz @ t=', x= 0.15, y=0.95)
g = Graph(adjacency_matrix, node_labels=NODE_LABELS,
            node_layout = NODE_POS, edge_cmap=cmap, arrows=True, ax=ax)

def update(ii):
    artists = []
    for jj, kk in zip(*np.where(adjacency_matrix)):
        w = weight_matrix[ii, jj, kk]
        artist = g.edge_artists[(jj, kk)]
        artist.set_facecolor(cmap(w))
        artist.update_width(0.03 * np.abs(w-0.5))
        artists.append(artist)
    return artists

animation = FuncAnimation(fig, update, frames=total_frames, interval=200, blit=True, repeat=False)
plt.show()

Obrigado. Eu apreciaria qualquer ajuda/sugestão.

python

1 respostas

  1. Best Answer

    Ao animar usando blit ( blit=True), os títulos do nível da figura não podem ser alterados, pois o blit armazena em cache tudo fora do eixo que está sendo animado.

    A alteração mais simples é definir blit como falso e, em seguida, atualizar o título da figura na função de atualização da animação.

    import numpy as np
import matplotlib.pyplot as plt

from matplotlib.animation import FuncAnimation
from netgraph import Graph

# Simulate a dynamic network with
total_frames = 10
total_nodes = 5
NODE_LABELS = {0: 'A', 1: 'B', 2: 'C', 3: 'D', 4: 'E'}
NODE_POS = {0: (0.0, 0.5), 1: (0.65, 0.25), 2: (0.7, 0.5), 3: (0.5, 0.75), 4: (0.25, 0.25)}
adjacency_matrix = np.random.rand(total_nodes, total_nodes) < 0.25
weight_matrix = np.random.randn(total_frames, total_nodes, total_nodes)

# Normalise the weights, such that they are on the interval [0, 1].
# They can then be passed directly to matplotlib colormaps (which expect floats on that interval).
vmin, vmax = -2, 2
weight_matrix[weight_matrix<vmin] = vmin
weight_matrix[weight_matrix>vmax] = vmax
weight_matrix -= vmin
weight_matrix /= vmax - vmin

cmap = plt.cm.RdGy

fig, ax = plt.subplots()
title = fig.suptitle('Simulation viz @ t=', x= 0.15, y=0.95) # <----
g = Graph(adjacency_matrix, node_labels=NODE_LABELS,
            node_layout = NODE_POS, edge_cmap=cmap, arrows=True, ax=ax)

def update(ii):
    artists = []
    for jj, kk in zip(*np.where(adjacency_matrix)):
        w = weight_matrix[ii, jj, kk]
        artist = g.edge_artists[(jj, kk)]
        artist.set_facecolor(cmap(w))
        artist.update_width(0.03 * np.abs(w-0.5))
        artists.append(artist)

    title.set_text(f"Simulation viz @ t={ii}") # <----

    return artists

animation = FuncAnimation(fig, update, frames=total_frames, interval=200, blit=False, repeat=False)
plt.show()
    • 1

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