<｜begin▁of▁sentence｜>### Instruction:
Given a list of base colors ['#FF0000', '#00FF00', '#0000FF'] and their respective positions in the gradient [0.0, 0.5, 1.0], can you create an AdvancedGradientPalette with 256 colors and display it using matplotlib?
### Response:
import igraph as ig
import matplotlib.pyplot as plt

# Define the base colors and their indices
base_colors = ['#FF0000', '#00FF00', '#0000FF'] # Red, Green, Blue
indices = [0.0, 0.5, 1.0]

# Create an advanced gradient palette with 256 colors
palette = ig.AdvancedGradientPalette(colors=base_colors, indices=indices, n=256)

# Use matplotlib to plot the palette colors
fig, ax = plt.subplots(figsize=(6, 1))
for i, color in enumerate(palette):
    ax.add_patch(plt.Rectangle((i, 0), 1, 1, facecolor=color))

# Set the x-axis limit and remove y-axis for better visualization
ax.set_xlim(0, 256)
ax.set_yticks([])

# Display the color gradient
plt.show()
<|EOT|>
