{"spec_id":"range-interval","library":"matplotlib","language":"python","code":"\"\"\" anyplot.ai\nrange-interval: Range Interval Chart\nLibrary: matplotlib 3.10.9 | Python 3.13.13\nQuality: 92/100 | Updated: 2026-05-18\n\"\"\"\n\nimport os\n\nimport matplotlib.pyplot as plt\nimport numpy as np\n\n\n# Theme tokens\nTHEME = os.getenv(\"ANYPLOT_THEME\", \"light\")\nPAGE_BG = \"#FAF8F1\" if THEME == \"light\" else \"#1A1A17\"\nELEVATED_BG = \"#FFFDF6\" if THEME == \"light\" else \"#242420\"\nINK = \"#1A1A17\" if THEME == \"light\" else \"#F0EFE8\"\nINK_SOFT = \"#4A4A44\" if THEME == \"light\" else \"#B8B7B0\"\nINK_MUTED = \"#6B6A63\" if THEME == \"light\" else \"#A8A79F\"\nRULE = \"rgba(26,26,23,0.10)\" if THEME == \"light\" else \"rgba(240,239,232,0.10)\"\nBRAND = \"#009E73\"\n\n# Data: Monthly temperature ranges (high/low) for a coastal city\nnp.random.seed(42)\n\nmonths = [\"Jan\", \"Feb\", \"Mar\", \"Apr\", \"May\", \"Jun\", \"Jul\", \"Aug\", \"Sep\", \"Oct\", \"Nov\", \"Dec\"]\n\n# Simulate realistic temperature ranges (Celsius) - warmer in summer\nbase_temps = np.array([5, 7, 11, 15, 19, 23, 26, 25, 21, 16, 10, 6])\nvariation = np.random.uniform(3, 7, size=12)\n\nmin_temps = base_temps - variation / 2 + np.random.uniform(-2, 2, size=12)\nmax_temps = base_temps + variation / 2 + np.random.uniform(2, 5, size=12)\n\n# Ensure max > min\nmin_temps = np.round(min_temps, 1)\nmax_temps = np.round(max_temps, 1)\n\n# Plot\nfig, ax = plt.subplots(figsize=(16, 9), facecolor=PAGE_BG)\nax.set_facecolor(PAGE_BG)\n\n# Create range bars using bar plot with bottom parameter\nx_positions = np.arange(len(months))\nrange_heights = max_temps - min_temps\n\n# Draw range bars\nax.bar(x_positions, range_heights, bottom=min_temps, width=0.6, color=BRAND, alpha=0.7, edgecolor=INK_SOFT, linewidth=2)\n\n# Add min/max markers for emphasis - with distinct marker styles\nax.scatter(\n    x_positions,\n    min_temps,\n    s=150,\n    color=BRAND,\n    zorder=5,\n    marker=\"v\",\n    linewidths=2,\n    edgecolors=INK_SOFT,\n    label=\"Min Temperature\",\n)\nax.scatter(\n    x_positions,\n    max_temps,\n    s=150,\n    color=BRAND,\n    zorder=5,\n    marker=\"^\",\n    linewidths=2,\n    edgecolors=INK_SOFT,\n    label=\"Max Temperature\",\n)\n\n# Add midpoint markers\nmidpoints = (min_temps + max_temps) / 2\nax.scatter(\n    x_positions,\n    midpoints,\n    s=100,\n    color=INK_MUTED,\n    zorder=6,\n    marker=\"o\",\n    edgecolor=INK_SOFT,\n    linewidth=1.5,\n    label=\"Midpoint\",\n)\n\n# Add value annotations at top and bottom of each bar\nfor i, (low, high) in enumerate(zip(min_temps, max_temps, strict=True)):\n    ax.annotate(\n        f\"{low:.0f}°\",\n        (x_positions[i], low),\n        textcoords=\"offset points\",\n        xytext=(0, -20),\n        ha=\"center\",\n        fontsize=12,\n        color=INK_SOFT,\n    )\n    ax.annotate(\n        f\"{high:.0f}°\",\n        (x_positions[i], high),\n        textcoords=\"offset points\",\n        xytext=(0, 10),\n        ha=\"center\",\n        fontsize=12,\n        color=INK_SOFT,\n    )\n\n# Styling\nax.set_xlabel(\"Month\", fontsize=20, color=INK)\nax.set_ylabel(\"Temperature (°C)\", fontsize=20, color=INK)\nax.set_title(\"range-interval · python · matplotlib · anyplot.ai\", fontsize=24, fontweight=\"medium\", color=INK)\n\nax.set_xticks(x_positions)\nax.set_xticklabels(months, color=INK_SOFT)\nax.tick_params(axis=\"both\", labelsize=16, colors=INK_SOFT)\n\n# Remove top and right spines\nax.spines[\"top\"].set_visible(False)\nax.spines[\"right\"].set_visible(False)\nfor spine in (\"left\", \"bottom\"):\n    ax.spines[spine].set_color(INK_SOFT)\n\n# Add horizontal grid for easier reading\nax.grid(True, axis=\"y\", alpha=0.10, linewidth=0.8, color=INK)\nax.set_axisbelow(True)\n\n# Legend with styled frame\nlegend = ax.legend(fontsize=14, loc=\"upper right\", framealpha=0.9)\nif legend:\n    legend.get_frame().set_facecolor(ELEVATED_BG)\n    legend.get_frame().set_edgecolor(INK_SOFT)\n    legend.get_frame().set_linewidth(1.5)\n    for text in legend.get_texts():\n        text.set_color(INK_SOFT)\n\n# Set y-axis range with padding\ny_min = min_temps.min() - 5\ny_max = max_temps.max() + 5\nax.set_ylim(y_min, y_max)\n\nplt.tight_layout()\nplt.savefig(f\"plot-{THEME}.png\", dpi=300, bbox_inches=\"tight\", facecolor=PAGE_BG)\n"}