{"spec_id":"renko-basic","library":"bokeh","language":"python","code":"\"\"\" anyplot.ai\nrenko-basic: Basic Renko Chart\nLibrary: bokeh 3.9.0 | Python 3.13.13\nQuality: 88/100 | Updated: 2026-05-17\n\"\"\"\n\nimport os\nimport sys\nimport time\nfrom pathlib import Path\n\nimport numpy as np\nimport pandas as pd\n\n\n# Remove current directory from path to avoid name conflict with bokeh.py\nsys.path = [p for p in sys.path if p != \".\" and not p.endswith(os.path.dirname(__file__))]\n\nfrom bokeh.io import output_file, save\nfrom bokeh.models import ColumnDataSource, HoverTool\nfrom bokeh.plotting import figure\nfrom selenium import webdriver\nfrom selenium.webdriver.chrome.options import Options\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\"\n\nBULLISH_COLOR = \"#009E73\"  # Okabe-Ito position 1 — always first series (green)\nBEARISH_COLOR = \"#AE3030\"  # imprint red — down bricks\n\n# Generate synthetic stock price data\nnp.random.seed(42)\nn_days = 200\ndates = pd.date_range(\"2024-01-01\", periods=n_days, freq=\"D\")\nreturns = np.random.randn(n_days) * 0.02\nprice = 100 * np.cumprod(1 + returns)\n\n# Build Renko bricks\nbrick_size = 2.0\nbricks = []\ncurrent_price = price[0]\nbrick_start = current_price - (current_price % brick_size)\ndirection = None\nbrick_index = 0\n\nfor close in price:\n    while True:\n        if direction is None:\n            if close >= brick_start + brick_size:\n                bricks.append(\n                    {\n                        \"index\": brick_index,\n                        \"bottom\": brick_start,\n                        \"top\": brick_start + brick_size,\n                        \"direction\": \"up\",\n                        \"price_range\": f\"${brick_start:.2f} - ${brick_start + brick_size:.2f}\",\n                    }\n                )\n                brick_start += brick_size\n                direction = \"up\"\n                brick_index += 1\n            elif close <= brick_start - brick_size:\n                bricks.append(\n                    {\n                        \"index\": brick_index,\n                        \"bottom\": brick_start - brick_size,\n                        \"top\": brick_start,\n                        \"direction\": \"down\",\n                        \"price_range\": f\"${brick_start - brick_size:.2f} - ${brick_start:.2f}\",\n                    }\n                )\n                brick_start -= brick_size\n                direction = \"down\"\n                brick_index += 1\n            else:\n                break\n        elif direction == \"up\":\n            if close >= brick_start + brick_size:\n                bricks.append(\n                    {\n                        \"index\": brick_index,\n                        \"bottom\": brick_start,\n                        \"top\": brick_start + brick_size,\n                        \"direction\": \"up\",\n                        \"price_range\": f\"${brick_start:.2f} - ${brick_start + brick_size:.2f}\",\n                    }\n                )\n                brick_start += brick_size\n                brick_index += 1\n            elif close <= brick_start - 2 * brick_size:\n                bricks.append(\n                    {\n                        \"index\": brick_index,\n                        \"bottom\": brick_start - brick_size,\n                        \"top\": brick_start,\n                        \"direction\": \"down\",\n                        \"price_range\": f\"${brick_start - brick_size:.2f} - ${brick_start:.2f}\",\n                    }\n                )\n                brick_start -= brick_size\n                direction = \"down\"\n                brick_index += 1\n            else:\n                break\n        else:\n            if close <= brick_start - brick_size:\n                bricks.append(\n                    {\n                        \"index\": brick_index,\n                        \"bottom\": brick_start - brick_size,\n                        \"top\": brick_start,\n                        \"direction\": \"down\",\n                        \"price_range\": f\"${brick_start - brick_size:.2f} - ${brick_start:.2f}\",\n                    }\n                )\n                brick_start -= brick_size\n                brick_index += 1\n            elif close >= brick_start + 2 * brick_size:\n                bricks.append(\n                    {\n                        \"index\": brick_index,\n                        \"bottom\": brick_start,\n                        \"top\": brick_start + brick_size,\n                        \"direction\": \"up\",\n                        \"price_range\": f\"${brick_start:.2f} - ${brick_start + brick_size:.2f}\",\n                    }\n                )\n                brick_start += brick_size\n                direction = \"up\"\n                brick_index += 1\n            else:\n                break\n\n# Prepare data for plotting\nbrick_df = pd.DataFrame(bricks)\nbullish = brick_df[brick_df[\"direction\"] == \"up\"]\nbearish = brick_df[brick_df[\"direction\"] == \"down\"]\n\n# Create figure\np = figure(\n    width=4800,\n    height=2700,\n    title=\"renko-basic · bokeh · anyplot.ai\",\n    x_axis_label=\"Brick Number\",\n    y_axis_label=\"Price ($)\",\n    tools=\"pan,wheel_zoom,box_zoom,reset,save\",\n)\n\n# Text styling for large canvas\np.title.text_font_size = \"28pt\"\np.xaxis.axis_label_text_font_size = \"22pt\"\np.yaxis.axis_label_text_font_size = \"22pt\"\np.xaxis.major_label_text_font_size = \"18pt\"\np.yaxis.major_label_text_font_size = \"18pt\"\n\n# Theme-adaptive chrome\np.background_fill_color = PAGE_BG\np.border_fill_color = PAGE_BG\np.outline_line_color = INK_SOFT\np.title.text_color = INK\np.xaxis.axis_label_text_color = INK\np.yaxis.axis_label_text_color = INK\np.xaxis.major_label_text_color = INK_SOFT\np.yaxis.major_label_text_color = INK_SOFT\np.xaxis.axis_line_color = INK_SOFT\np.yaxis.axis_line_color = INK_SOFT\n\n# Grid styling\np.xgrid.grid_line_color = INK\np.ygrid.grid_line_color = INK\np.xgrid.grid_line_alpha = 0.10\np.ygrid.grid_line_alpha = 0.10\n\n# Brick width\nbrick_width = 0.85\n\n# Draw bullish bricks\nif len(bullish) > 0:\n    bullish_source = ColumnDataSource(\n        data={\n            \"x\": bullish[\"index\"].values,\n            \"bottom\": bullish[\"bottom\"].values,\n            \"top\": bullish[\"top\"].values,\n            \"price_range\": bullish[\"price_range\"].values,\n        }\n    )\n    bullish_bars = p.vbar(\n        x=\"x\",\n        width=brick_width,\n        bottom=\"bottom\",\n        top=\"top\",\n        source=bullish_source,\n        color=BULLISH_COLOR,\n        line_color=BULLISH_COLOR,\n        line_width=1,\n        legend_label=\"Bullish\",\n    )\n    hover_bullish = HoverTool(\n        renderers=[bullish_bars], tooltips=[(\"Brick\", \"@x\"), (\"Price Range\", \"@price_range\"), (\"Direction\", \"Up\")]\n    )\n    p.add_tools(hover_bullish)\n\n# Draw bearish bricks\nif len(bearish) > 0:\n    bearish_source = ColumnDataSource(\n        data={\n            \"x\": bearish[\"index\"].values,\n            \"bottom\": bearish[\"bottom\"].values,\n            \"top\": bearish[\"top\"].values,\n            \"price_range\": bearish[\"price_range\"].values,\n        }\n    )\n    bearish_bars = p.vbar(\n        x=\"x\",\n        width=brick_width,\n        bottom=\"bottom\",\n        top=\"top\",\n        source=bearish_source,\n        color=BEARISH_COLOR,\n        line_color=BEARISH_COLOR,\n        line_width=1,\n        legend_label=\"Bearish\",\n    )\n    hover_bearish = HoverTool(\n        renderers=[bearish_bars], tooltips=[(\"Brick\", \"@x\"), (\"Price Range\", \"@price_range\"), (\"Direction\", \"Down\")]\n    )\n    p.add_tools(hover_bearish)\n\n# Legend styling\nif p.legend:\n    p.legend.location = \"top_left\"\n    p.legend.label_text_font_size = \"18pt\"\n    p.legend.background_fill_color = ELEVATED_BG\n    p.legend.border_line_color = INK_SOFT\n    p.legend.label_text_color = INK_SOFT\n    p.legend.glyph_height = 35\n    p.legend.glyph_width = 35\n\n# Save HTML output\noutput_file(f\"plot-{THEME}.html\")\nsave(p)\n\n# Screenshot with headless Chrome\nW, H = 4800, 2700\nopts = Options()\nfor arg in (\n    \"--headless=new\",\n    \"--no-sandbox\",\n    \"--disable-dev-shm-usage\",\n    \"--disable-gpu\",\n    f\"--window-size={W},{H}\",\n    \"--hide-scrollbars\",\n):\n    opts.add_argument(arg)\ndriver = webdriver.Chrome(options=opts)\ndriver.set_window_size(W, H)\ndriver.get(f\"file://{Path(f'plot-{THEME}.html').resolve()}\")\ntime.sleep(3)\ndriver.save_screenshot(f\"plot-{THEME}.png\")\ndriver.quit()\n"}