Heatmap
Skill Matrix Heatmap
Dark theme heatmap showing team skills assessment
Output
Python
import matplotlib.pyplot as plt
import numpy as np
from matplotlib.colors import LinearSegmentedColormap
from matplotlib.patches import FancyBboxPatch
fig, ax = plt.subplots(figsize=(12, 9), facecolor='#ffffff')
ax.set_facecolor('#ffffff')
np.random.seed(42)
skills = ['Python', 'JavaScript', 'SQL', 'Docker', 'AWS', 'Git', 'Testing']
team = ['Alice', 'Bob', 'Charlie', 'Diana', 'Eve']
data = np.random.randint(1, 6, (len(team), len(skills)))
colors = ['#1e293b', '#fef3c7', '#fbbf24', '#0891b2', '#0c4a6e']
cmap = LinearSegmentedColormap.from_list('skill', colors, N=256)
cell_w, cell_h = 0.88, 0.82
for i in range(len(team)):
for j in range(len(skills)):
val = data[i, j]
rect = FancyBboxPatch((j - cell_w/2, i - cell_h/2), cell_w, cell_h,
boxstyle="round,pad=0.02,rounding_size=0.12",
facecolor=cmap((val-1)/4), edgecolor='#e2e8f0', linewidth=1.5)
ax.add_patch(rect)
ax.text(j, i, str(val), ha='center', va='center', color='#1e293b', fontsize=11, fontweight='bold')
ax.set_xlim(-0.5, len(skills)-0.5)
ax.set_ylim(-0.5, len(team)-0.5)
ax.set_aspect('equal')
ax.invert_yaxis()
ax.set_xticks(range(len(skills)))
ax.set_yticks(range(len(team)))
ax.set_xticklabels(skills, rotation=45, ha='right', color='#64748b', fontsize=10, fontweight='500')
ax.set_yticklabels(team, color='#1e293b', fontsize=10, fontweight='500')
sm = plt.cm.ScalarMappable(cmap=cmap, norm=plt.Normalize(1, 5))
cbar = plt.colorbar(sm, ax=ax, shrink=0.8, pad=0.02)
cbar.set_label('Skill Level', color='#1e293b', fontsize=11)
cbar.outline.set_edgecolor('#e2e8f0')
plt.setp(plt.getp(cbar.ax.axes, 'yticklabels'), color='#64748b')
for spine in ax.spines.values(): spine.set_visible(False)
ax.tick_params(length=0)
ax.set_title('Team Skill Matrix', fontsize=18, color='#1e293b', fontweight='bold', pad=20)
plt.tight_layout()
plt.show()
Library
Matplotlib
Category
Heatmaps & Density
More Heatmap examples
☕