A horizontal bar chart displaying categorical data with rectangular bars extending horizontally from the y-axis. The length of each bar is proportional to the value it represents. This orientation is particularly effective when category names are long or numerous, as horizontal labels are easier to read than rotated vertical labels. Horizontal bar charts excel at rankings, comparisons, and survey results visualization.
""" anyplot.ai
bar-horizontal: Horizontal Bar Chart
Library: pygal 3.1.3 | Python 3.13.14
Quality: 90/100 | Updated: 2026-08-05
"""
import os
import pygal
from pygal.style import Style
# Theme tokens (Imprint palette)
THEME = os.getenv("ANYPLOT_THEME", "light")
PAGE_BG = "#FAF8F1" if THEME == "light" else "#1A1A17"
INK = "#1A1A17" if THEME == "light" else "#F0EFE8"
INK_MUTED = "#6B6A63" if THEME == "light" else "#A8A79F"
BRAND = "#009E73" # Imprint palette position 1
# Data - Retail revenue by product category (sorted descending for ranking display)
categories = [
"Electronics",
"Apparel",
"Home & Furniture",
"Groceries",
"Health & Beauty",
"Sporting Goods",
"Toys & Games",
"Books & Media",
"Automotive",
"Garden & Outdoor",
]
values = [842.6, 615.3, 498.7, 437.2, 356.8, 289.4, 214.5, 156.9, 128.3, 97.6]
# Title fontsize scales with title length (formula: prompts/plot-generator.md)
TITLE = "Retail Revenue by Category · bar-horizontal · python · pygal · anyplot.ai"
_ratio = 67 / len(TITLE) if len(TITLE) > 67 else 1.0
title_font_size = max(44, round(66 * _ratio))
# Custom style with theme-adaptive colors, sized for the 3200x1800 canvas
custom_style = Style(
background=PAGE_BG,
plot_background=PAGE_BG,
foreground=INK,
foreground_strong=INK,
foreground_subtle=INK_MUTED,
colors=(BRAND,),
title_font_size=title_font_size,
label_font_size=56,
major_label_font_size=44,
legend_font_size=44,
value_font_size=36,
stroke_width=2.5,
opacity="1",
opacity_hover="1",
)
# Create horizontal bar chart - ultra-minimal, no x-axis guides
chart = pygal.HorizontalBar(
width=3200,
height=1800,
style=custom_style,
title=TITLE,
x_title="Revenue ($M)",
show_legend=False,
show_y_guides=False,
show_x_guides=False,
spacing=20,
margin=40,
margin_left=280,
margin_right=140,
margin_top=100,
margin_bottom=100,
print_values=True,
print_values_position="end",
value_formatter=lambda x: f"${x:,.1f}M",
truncate_label=-1,
)
# Add data as single series. pygal.HorizontalBar transposes axes internally,
# so x_labels carries the category axis and y_labels the value-tick axis.
chart.add("Revenue", values)
chart.x_labels = categories
chart.y_labels = [str(v) for v in range(0, 901, 150)]
# Save outputs
chart.render_to_png(f"plot-{THEME}.png")
chart.render_to_file(f"plot-{THEME}.html")
Runnable source as JSON, for any HTTP client: https://api.anyplot.ai/specs/bar-horizontal/pygal/code. Any spec id and library id listed in llms-full.txt fit the same URL shape; every URL below is complete and callable.
{
"spec_id": "bar-horizontal",
"language": "python",
"library": "pygal",
"page": "https://anyplot.ai/bar-horizontal/python/pygal",
"hub": "https://anyplot.ai/bar-horizontal",
"code_json": "https://api.anyplot.ai/specs/bar-horizontal/pygal/code",
"spec_json": "https://api.anyplot.ai/specs/bar-horizontal",
"render_light_png": "https://storage.googleapis.com/anyplot-images/plots/bar-horizontal/python/pygal/plot-light.png",
"render_dark_png": "https://storage.googleapis.com/anyplot-images/plots/bar-horizontal/python/pygal/plot-dark.png",
"interactive_light_html": "https://storage.googleapis.com/anyplot-images/plots/bar-horizontal/python/pygal/plot-light.html",
"interactive_dark_html": "https://storage.googleapis.com/anyplot-images/plots/bar-horizontal/python/pygal/plot-dark.html",
"quality_score": 90.0,
"license": "MIT",
"guide": "https://anyplot.ai/llms.txt"
}Part of Horizontal Bar Chart on anyplot.ai.