Franke Test Function Trisurf

import matplotlib.pyplot as plt
import numpy as np
from matplotlib.colors import LinearSegmentedColormap

# Scattered sampling
np.random.seed(77)
n_points = 700
x = np.random.uniform(0, 1, n_points)
y = np.random.uniform(0, 1, n_points)

# Franke function
z = (0.75 * np.exp(-((9*x-2)**2 + (9*y-2)**2)/4) +
     0.75 * np.exp(-((9*x+1)**2/49 + (9*y+1)/10)) +
     0.5 * np.exp(-((9*x-7)**2 + (9*y-3)**2)/4) -
     0.2 * np.exp(-(9*x-4)**2 - (9*y-7)**2))

# Custom colormap
colors = ['#0a0a0f', '#4a1942', '#F527B0', '#F5276C', '#fda4af']
cmap = LinearSegmentedColormap.from_list('pink_coral', colors, N=256)

fig = plt.figure(figsize=(10, 8), facecolor='#0a0a0f')
ax = fig.add_subplot(111, projection='3d', facecolor='#0a0a0f')

surf = ax.plot_trisurf(x, y, z, cmap=cmap, alpha=0.9, linewidth=0.1, edgecolor='#ffffff08')

ax.set_xlabel('X', fontsize=10, color='#94a3b8', labelpad=10)
ax.set_ylabel('Y', fontsize=10, color='#94a3b8', labelpad=10)
ax.set_zlabel('f(x,y)', fontsize=10, color='#94a3b8', labelpad=10)
ax.set_title("Franke Test Function Trisurf", fontsize=14, color='white', fontweight='bold', pad=20)

ax.tick_params(colors='#64748b', labelsize=8)
ax.xaxis.pane.fill = False
ax.yaxis.pane.fill = False
ax.zaxis.pane.fill = False
ax.xaxis.pane.set_edgecolor('#1e293b')
ax.yaxis.pane.set_edgecolor('#1e293b')
ax.zaxis.pane.set_edgecolor('#1e293b')

ax.view_init(elev=30, azim=45)
plt.tight_layout()
plt.show()