From 6b3cab319539629f7538cde904bf6d15e1436d05 Mon Sep 17 00:00:00 2001 From: "github-actions[bot]" Date: Tue, 30 Dec 2025 21:54:35 +0000 Subject: [PATCH 1/5] feat(pygal): implement parallel-categories-basic MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 馃 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 --- .../implementations/pygal.py | 361 ++++++++++++++++++ 1 file changed, 361 insertions(+) create mode 100644 plots/parallel-categories-basic/implementations/pygal.py diff --git a/plots/parallel-categories-basic/implementations/pygal.py b/plots/parallel-categories-basic/implementations/pygal.py new file mode 100644 index 0000000000..0c4c0fbac5 --- /dev/null +++ b/plots/parallel-categories-basic/implementations/pygal.py @@ -0,0 +1,361 @@ +"""pyplots.ai +parallel-categories-basic: Basic Parallel Categories Plot +Library: pygal | Python 3.13 +Quality: pending | Created: 2025-12-30 +""" + +import cairosvg +import numpy as np +import pygal +from pygal.style import Style + + +# Set seed for reproducibility +np.random.seed(42) + +# Data: Product journey from category through channel to outcome +# This shows customer flow through a purchase funnel +categories = ["Category", "Channel", "Payment", "Outcome"] + +# Define values for each dimension +dimension_values = { + "Category": ["Electronics", "Clothing", "Home & Garden", "Sports"], + "Channel": ["Online", "Store", "Mobile App"], + "Payment": ["Credit Card", "Debit Card", "Digital Wallet"], + "Outcome": ["Completed", "Returned", "Cancelled"], +} + + +# Helper function to escape XML special characters +def xml_escape(text): + """Escape special characters for XML/SVG.""" + return text.replace("&", "&").replace("<", "<").replace(">", ">") + + +# Generate flow data - counts of observations for each path +# Structure: (dim1_value, dim2_value, dim3_value, dim4_value): count +np.random.seed(42) +flows = {} + +# Generate realistic shopping journey data +base_counts = { + # Electronics patterns - high online, good completion + ("Electronics", "Online", "Credit Card", "Completed"): 450, + ("Electronics", "Online", "Credit Card", "Returned"): 85, + ("Electronics", "Online", "Digital Wallet", "Completed"): 280, + ("Electronics", "Online", "Digital Wallet", "Returned"): 45, + ("Electronics", "Store", "Credit Card", "Completed"): 320, + ("Electronics", "Store", "Debit Card", "Completed"): 180, + ("Electronics", "Mobile App", "Digital Wallet", "Completed"): 220, + ("Electronics", "Mobile App", "Digital Wallet", "Cancelled"): 75, + ("Electronics", "Online", "Credit Card", "Cancelled"): 40, + # Clothing patterns - balanced channels, higher returns + ("Clothing", "Online", "Credit Card", "Completed"): 380, + ("Clothing", "Online", "Credit Card", "Returned"): 120, + ("Clothing", "Online", "Debit Card", "Completed"): 190, + ("Clothing", "Online", "Debit Card", "Returned"): 65, + ("Clothing", "Store", "Credit Card", "Completed"): 410, + ("Clothing", "Store", "Debit Card", "Completed"): 250, + ("Clothing", "Store", "Debit Card", "Returned"): 40, + ("Clothing", "Mobile App", "Digital Wallet", "Completed"): 175, + ("Clothing", "Mobile App", "Credit Card", "Completed"): 130, + ("Clothing", "Online", "Digital Wallet", "Cancelled"): 45, + # Home & Garden - more store visits + ("Home & Garden", "Store", "Credit Card", "Completed"): 380, + ("Home & Garden", "Store", "Debit Card", "Completed"): 290, + ("Home & Garden", "Store", "Debit Card", "Returned"): 55, + ("Home & Garden", "Online", "Credit Card", "Completed"): 210, + ("Home & Garden", "Online", "Credit Card", "Returned"): 40, + ("Home & Garden", "Online", "Digital Wallet", "Completed"): 145, + ("Home & Garden", "Mobile App", "Digital Wallet", "Completed"): 95, + # Sports - mobile-friendly, good completion + ("Sports", "Mobile App", "Digital Wallet", "Completed"): 260, + ("Sports", "Mobile App", "Credit Card", "Completed"): 185, + ("Sports", "Online", "Credit Card", "Completed"): 295, + ("Sports", "Online", "Debit Card", "Completed"): 175, + ("Sports", "Store", "Credit Card", "Completed"): 220, + ("Sports", "Store", "Debit Card", "Completed"): 165, + ("Sports", "Store", "Debit Card", "Returned"): 30, +} + +# Colors for first dimension (Category) - colorblind-safe +category_colors = { + "Electronics": "#306998", # Python Blue + "Clothing": "#FFD43B", # Python Yellow + "Home & Garden": "#4ECDC4", # Teal + "Sports": "#E17055", # Coral +} + +# Custom style for pygal +custom_style = Style( + background="white", + plot_background="white", + foreground="#333333", + foreground_strong="#333333", + foreground_subtle="#666666", + title_font_size=72, +) + +# Create minimal chart for title rendering +chart = pygal.XY( + width=4800, + height=2700, + style=custom_style, + title="parallel-categories-basic 路 pygal 路 pyplots.ai", + show_legend=False, + show_x_guides=False, + show_y_guides=False, + show_x_labels=False, + show_y_labels=False, + dots_size=0, + stroke=False, + range=(0, 100), + xrange=(0, 100), +) + +# Add empty data to avoid "No data" message +chart.add("", [(50, 50)]) + +# Render base SVG +base_svg = chart.render().decode("utf-8") + +# SVG coordinate mapping +margin_left = 450 +margin_right = 350 +margin_top = 350 +margin_bottom = 250 +chart_width = 4800 - margin_left - margin_right +chart_height = 2700 - margin_top - margin_bottom + +# Calculate positions for each dimension axis +n_dims = len(categories) +x_positions = [margin_left + i * chart_width / (n_dims - 1) for i in range(n_dims)] +bar_width = 120 +gap_ratio = 0.05 # Gap between categories on each axis + +# Calculate totals for each category in each dimension +dim_totals = {} +for dim_idx, dim_name in enumerate(categories): + dim_totals[dim_idx] = {} + for cat in dimension_values[dim_name]: + total = 0 + for path, count in base_counts.items(): + if path[dim_idx] == cat: + total += count + dim_totals[dim_idx][cat] = total + +# Calculate node positions +node_positions = {} # {(dim_idx, category): (y_top, y_bottom, x)} + +for dim_idx, dim_name in enumerate(categories): + x = x_positions[dim_idx] + dim_total = sum(dim_totals[dim_idx].values()) + total_gap = gap_ratio * chart_height + available_height = chart_height - total_gap + n_cats = len(dimension_values[dim_name]) + gap_size = total_gap / max(1, n_cats - 1) if n_cats > 1 else 0 + + y_top = margin_top + for _cat_idx, cat in enumerate(dimension_values[dim_name]): + height = (dim_totals[dim_idx][cat] / dim_total) * available_height if dim_total > 0 else 0 + y_bottom = y_top + height + node_positions[(dim_idx, cat)] = (y_top, y_bottom, x) + y_top = y_bottom + gap_size + +# Build SVG elements +parallel_svg = '' + +# Draw nodes (category bars) for each dimension +for dim_idx, dim_name in enumerate(categories): + x = x_positions[dim_idx] + + for cat in dimension_values[dim_name]: + y_top, y_bottom, _ = node_positions[(dim_idx, cat)] + height = y_bottom - y_top + + if height < 1: + continue + + # Color based on first dimension category for the portion + # For first dimension, use category color directly + if dim_idx == 0: + fill_color = category_colors[cat] + else: + fill_color = "#888888" # Gray for other dimensions + + parallel_svg += f''' + ''' + + # Add dimension label at top + parallel_svg += f''' + {xml_escape(dim_name)}''' + +# Add category labels for each dimension +for dim_idx, dim_name in enumerate(categories): + x = x_positions[dim_idx] + for cat in dimension_values[dim_name]: + y_top, y_bottom, _ = node_positions[(dim_idx, cat)] + y_center = (y_top + y_bottom) / 2 + height = y_bottom - y_top + + if height < 15: # Skip label if too small + continue + + # Position label based on dimension + if dim_idx == 0: # Left side + label_x = x - bar_width / 2 - 20 + anchor = "end" + elif dim_idx == n_dims - 1: # Right side + label_x = x + bar_width / 2 + 20 + anchor = "start" + else: # Middle - put inside or below + label_x = x + anchor = "middle" + + # Calculate font size based on bar height + font_size = min(36, max(20, height * 0.4)) + + if dim_idx in [0, n_dims - 1]: + parallel_svg += f''' + {xml_escape(cat)}''' + +# Calculate flow offsets for drawing ribbons +# Track cumulative position for each (dim_idx, category, direction) +source_offsets = {} # For outgoing flows +target_offsets = {} # For incoming flows + +for dim_idx in range(n_dims): + for cat in dimension_values[categories[dim_idx]]: + y_top, y_bottom, _ = node_positions[(dim_idx, cat)] + source_offsets[(dim_idx, cat)] = y_top + target_offsets[(dim_idx, cat)] = y_top + +# Draw flows between consecutive dimensions +for dim_idx in range(n_dims - 1): + dim1_name = categories[dim_idx] + dim2_name = categories[dim_idx + 1] + x0 = x_positions[dim_idx] + x1 = x_positions[dim_idx + 1] + + # Calculate total for normalization at each dimension + dim1_total = sum(dim_totals[dim_idx].values()) + dim2_total = sum(dim_totals[dim_idx + 1].values()) + + # Aggregate flows between consecutive dimensions + flow_aggregates = {} + for path, count in base_counts.items(): + key = (path[dim_idx], path[dim_idx + 1], path[0]) # Include first category for color + if key not in flow_aggregates: + flow_aggregates[key] = 0 + flow_aggregates[key] += count + + # Sort flows for consistent drawing (by source category order) + sorted_flows = sorted( + flow_aggregates.items(), + key=lambda x: (dimension_values[dim1_name].index(x[0][0]), dimension_values[dim2_name].index(x[0][1])), + ) + + # Draw each flow + for (source_cat, target_cat, first_cat), flow_value in sorted_flows: + if flow_value <= 0: + continue + + source_y_top, source_y_bottom, _ = node_positions[(dim_idx, source_cat)] + target_y_top, target_y_bottom, _ = node_positions[(dim_idx + 1, target_cat)] + + source_dim_total = dim_totals[dim_idx][source_cat] + target_dim_total = dim_totals[dim_idx + 1][target_cat] + + source_height = ( + (flow_value / source_dim_total) * (source_y_bottom - source_y_top) if source_dim_total > 0 else 0 + ) + target_height = ( + (flow_value / target_dim_total) * (target_y_bottom - target_y_top) if target_dim_total > 0 else 0 + ) + + # Get current positions + y0_top = source_offsets[(dim_idx, source_cat)] + y0_bottom = y0_top + source_height + y1_top = target_offsets[(dim_idx + 1, target_cat)] + y1_bottom = y1_top + target_height + + # Bezier curve control points + band_x0 = x0 + bar_width / 2 + band_x1 = x1 - bar_width / 2 + cx0 = band_x0 + 0.4 * (band_x1 - band_x0) + cx1 = band_x0 + 0.6 * (band_x1 - band_x0) + + # Create path for the curved ribbon + path_d = ( + f"M {band_x0:.0f},{y0_top:.0f} " + f"C {cx0:.0f},{y0_top:.0f} {cx1:.0f},{y1_top:.0f} {band_x1:.0f},{y1_top:.0f} " + f"L {band_x1:.0f},{y1_bottom:.0f} " + f"C {cx1:.0f},{y1_bottom:.0f} {cx0:.0f},{y0_bottom:.0f} {band_x0:.0f},{y0_bottom:.0f} " + f"Z" + ) + + # Color by first category + ribbon_color = category_colors[first_cat] + + parallel_svg += f''' + ''' + + # Update offsets + source_offsets[(dim_idx, source_cat)] = y0_bottom + target_offsets[(dim_idx + 1, target_cat)] = y1_bottom + +# Add legend for categories +legend_x = margin_left +legend_y = chart_height + margin_top + 100 +legend_spacing = 400 + +for idx, (cat, color) in enumerate(category_colors.items()): + lx = legend_x + idx * legend_spacing + parallel_svg += f''' + + {xml_escape(cat)}''' + +# Add subtitle +parallel_svg += f''' + Customer Purchase Journey Flows by Product Category''' + +parallel_svg += "\n" + +# Insert elements before closing tag +svg_with_parallel = base_svg.replace("", f"{parallel_svg}\n") + +# Save SVG +with open("plot.svg", "w") as f: + f.write(svg_with_parallel) + +# Render to PNG +cairosvg.svg2png(bytestring=svg_with_parallel.encode("utf-8"), write_to="plot.png") + +# Save HTML for interactive version +with open("plot.html", "w") as f: + f.write(""" + + + parallel-categories-basic 路 pygal 路 pyplots.ai + + + +
+ + Parallel categories diagram not supported + +
+ +""") From a7089aabf9286ef41d8ef79a8759a2a4f0918e79 Mon Sep 17 00:00:00 2001 From: "github-actions[bot]" Date: Tue, 30 Dec 2025 21:54:55 +0000 Subject: [PATCH 2/5] chore(pygal): add metadata for parallel-categories-basic --- .../metadata/pygal.yaml | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 plots/parallel-categories-basic/metadata/pygal.yaml diff --git a/plots/parallel-categories-basic/metadata/pygal.yaml b/plots/parallel-categories-basic/metadata/pygal.yaml new file mode 100644 index 0000000000..54fd7ac779 --- /dev/null +++ b/plots/parallel-categories-basic/metadata/pygal.yaml @@ -0,0 +1,19 @@ +# Per-library metadata for pygal implementation of parallel-categories-basic +# Auto-generated by impl-generate.yml + +library: pygal +specification_id: parallel-categories-basic +created: '2025-12-30T21:54:55Z' +updated: '2025-12-30T21:54:55Z' +generated_by: claude-opus-4-5-20251101 +workflow_run: 20606635585 +issue: 0 +python_version: 3.13.11 +library_version: 3.1.0 +preview_url: https://storage.googleapis.com/pyplots-images/plots/parallel-categories-basic/pygal/plot.png +preview_thumb: https://storage.googleapis.com/pyplots-images/plots/parallel-categories-basic/pygal/plot_thumb.png +preview_html: https://storage.googleapis.com/pyplots-images/plots/parallel-categories-basic/pygal/plot.html +quality_score: null +review: + strengths: [] + weaknesses: [] From 71ffaf837c3ab08438b5bfe76f085b7bd023c5b0 Mon Sep 17 00:00:00 2001 From: "github-actions[bot]" Date: Tue, 30 Dec 2025 21:57:25 +0000 Subject: [PATCH 3/5] chore(pygal): update quality score 85 and review feedback for parallel-categories-basic --- .../implementations/pygal.py | 6 ++--- .../metadata/pygal.yaml | 27 ++++++++++++++----- 2 files changed, 23 insertions(+), 10 deletions(-) diff --git a/plots/parallel-categories-basic/implementations/pygal.py b/plots/parallel-categories-basic/implementations/pygal.py index 0c4c0fbac5..09446680af 100644 --- a/plots/parallel-categories-basic/implementations/pygal.py +++ b/plots/parallel-categories-basic/implementations/pygal.py @@ -1,7 +1,7 @@ -"""pyplots.ai +""" pyplots.ai parallel-categories-basic: Basic Parallel Categories Plot -Library: pygal | Python 3.13 -Quality: pending | Created: 2025-12-30 +Library: pygal 3.1.0 | Python 3.13.11 +Quality: 85/100 | Created: 2025-12-30 """ import cairosvg diff --git a/plots/parallel-categories-basic/metadata/pygal.yaml b/plots/parallel-categories-basic/metadata/pygal.yaml index 54fd7ac779..7d19b332f1 100644 --- a/plots/parallel-categories-basic/metadata/pygal.yaml +++ b/plots/parallel-categories-basic/metadata/pygal.yaml @@ -1,10 +1,7 @@ -# Per-library metadata for pygal implementation of parallel-categories-basic -# Auto-generated by impl-generate.yml - library: pygal specification_id: parallel-categories-basic created: '2025-12-30T21:54:55Z' -updated: '2025-12-30T21:54:55Z' +updated: '2025-12-30T21:57:25Z' generated_by: claude-opus-4-5-20251101 workflow_run: 20606635585 issue: 0 @@ -13,7 +10,23 @@ library_version: 3.1.0 preview_url: https://storage.googleapis.com/pyplots-images/plots/parallel-categories-basic/pygal/plot.png preview_thumb: https://storage.googleapis.com/pyplots-images/plots/parallel-categories-basic/pygal/plot_thumb.png preview_html: https://storage.googleapis.com/pyplots-images/plots/parallel-categories-basic/pygal/plot.html -quality_score: null +quality_score: 85 review: - strengths: [] - weaknesses: [] + strengths: + - Excellent parallel categories visualization with clear flow ribbons showing customer + journey paths across four dimensions + - Colorblind-safe palette with good distinction between product categories (blue, + yellow, teal, coral) + - Proper title format following spec-id 路 library 路 pyplots.ai convention + - Realistic e-commerce scenario with meaningful data showing different purchase + patterns + - Width-proportional ribbons correctly represent observation counts as specified + weaknesses: + - Middle dimension labels (Channel, Payment) are missing - only first and last dimensions + show category labels + - The 'Cancelled' label on the rightmost axis is very small and barely readable + compared to other labels + - Code uses helper function xml_escape() which violates KISS principle (no functions/classes + rule) + - Gray bars for middle dimensions reduce visual clarity - consider using color coding + throughout From ef66e8f1fcd9c0d191bc42e90e0b13b092936c79 Mon Sep 17 00:00:00 2001 From: "github-actions[bot]" Date: Tue, 30 Dec 2025 22:01:24 +0000 Subject: [PATCH 4/5] fix(pygal): address review feedback for parallel-categories-basic - Add middle dimension labels (Channel, Payment) that were missing - Fix small 'Cancelled' label by setting minimum font size of 28px - Remove xml_escape helper function to comply with KISS principle - Add colorful bars for all dimensions instead of gray for middle ones Attempt 1/3 - fixes based on AI review --- .../implementations/pygal.py | 54 +++++++++++-------- 1 file changed, 32 insertions(+), 22 deletions(-) diff --git a/plots/parallel-categories-basic/implementations/pygal.py b/plots/parallel-categories-basic/implementations/pygal.py index 09446680af..47f99b2f44 100644 --- a/plots/parallel-categories-basic/implementations/pygal.py +++ b/plots/parallel-categories-basic/implementations/pygal.py @@ -1,4 +1,4 @@ -""" pyplots.ai +"""pyplots.ai parallel-categories-basic: Basic Parallel Categories Plot Library: pygal 3.1.0 | Python 3.13.11 Quality: 85/100 | Created: 2025-12-30 @@ -26,12 +26,6 @@ } -# Helper function to escape XML special characters -def xml_escape(text): - """Escape special characters for XML/SVG.""" - return text.replace("&", "&").replace("<", "<").replace(">", ">") - - # Generate flow data - counts of observations for each path # Structure: (dim1_value, dim2_value, dim3_value, dim4_value): count np.random.seed(42) @@ -86,6 +80,13 @@ def xml_escape(text): "Sports": "#E17055", # Coral } +# Secondary colors for middle dimensions - distinct from category colors +dimension_colors = { + "Channel": {"Online": "#7B68EE", "Store": "#20B2AA", "Mobile App": "#FF69B4"}, + "Payment": {"Credit Card": "#9370DB", "Debit Card": "#3CB371", "Digital Wallet": "#FF6347"}, + "Outcome": {"Completed": "#32CD32", "Returned": "#FFA500", "Cancelled": "#DC143C"}, +} + # Custom style for pygal custom_style = Style( background="white", @@ -176,22 +177,22 @@ def xml_escape(text): if height < 1: continue - # Color based on first dimension category for the portion - # For first dimension, use category color directly + # Color based on dimension - use category colors for first dim, dimension colors for others if dim_idx == 0: fill_color = category_colors[cat] else: - fill_color = "#888888" # Gray for other dimensions + fill_color = dimension_colors[dim_name][cat] parallel_svg += f''' ''' - # Add dimension label at top + # Add dimension label at top (escape & for Home & Garden) + dim_name_escaped = dim_name.replace("&", "&") parallel_svg += f''' {xml_escape(dim_name)}''' + fill="#333333">{dim_name_escaped}''' # Add category labels for each dimension for dim_idx, dim_name in enumerate(categories): @@ -201,28 +202,36 @@ def xml_escape(text): y_center = (y_top + y_bottom) / 2 height = y_bottom - y_top - if height < 15: # Skip label if too small - continue - # Position label based on dimension - if dim_idx == 0: # Left side + if dim_idx == 0: # Left side - outside bar label_x = x - bar_width / 2 - 20 anchor = "end" - elif dim_idx == n_dims - 1: # Right side + elif dim_idx == n_dims - 1: # Right side - outside bar label_x = x + bar_width / 2 + 20 anchor = "start" - else: # Middle - put inside or below + else: # Middle dimensions - below the bar label_x = x anchor = "middle" - # Calculate font size based on bar height - font_size = min(36, max(20, height * 0.4)) + # Use consistent readable font size (minimum 28px for all labels) + font_size = max(28, min(36, height * 0.35)) + + # Escape special characters + cat_escaped = cat.replace("&", "&") if dim_idx in [0, n_dims - 1]: + # Side labels - next to bars parallel_svg += f''' {xml_escape(cat)}''' + fill="#333333" dominant-baseline="middle">{cat_escaped}''' + else: + # Middle dimension labels - below each bar segment + label_y = y_bottom + 35 + parallel_svg += f''' + {cat_escaped}''' # Calculate flow offsets for drawing ribbons # Track cumulative position for each (dim_idx, category, direction) @@ -316,10 +325,11 @@ def xml_escape(text): for idx, (cat, color) in enumerate(category_colors.items()): lx = legend_x + idx * legend_spacing + cat_escaped = cat.replace("&", "&") parallel_svg += f''' {xml_escape(cat)}''' + font-size="40" font-family="DejaVu Sans, sans-serif" fill="#333333">{cat_escaped}''' # Add subtitle parallel_svg += f''' From 3bc15c7b5a8f91a3b463dae3169596c3f03773c6 Mon Sep 17 00:00:00 2001 From: "github-actions[bot]" Date: Tue, 30 Dec 2025 22:03:41 +0000 Subject: [PATCH 5/5] chore(pygal): update quality score 90 and review feedback for parallel-categories-basic --- .../implementations/pygal.py | 4 +-- .../metadata/pygal.yaml | 31 ++++++++----------- 2 files changed, 15 insertions(+), 20 deletions(-) diff --git a/plots/parallel-categories-basic/implementations/pygal.py b/plots/parallel-categories-basic/implementations/pygal.py index 47f99b2f44..4a338c8ad7 100644 --- a/plots/parallel-categories-basic/implementations/pygal.py +++ b/plots/parallel-categories-basic/implementations/pygal.py @@ -1,7 +1,7 @@ -"""pyplots.ai +""" pyplots.ai parallel-categories-basic: Basic Parallel Categories Plot Library: pygal 3.1.0 | Python 3.13.11 -Quality: 85/100 | Created: 2025-12-30 +Quality: 90/100 | Created: 2025-12-30 """ import cairosvg diff --git a/plots/parallel-categories-basic/metadata/pygal.yaml b/plots/parallel-categories-basic/metadata/pygal.yaml index 7d19b332f1..a2fe924f8d 100644 --- a/plots/parallel-categories-basic/metadata/pygal.yaml +++ b/plots/parallel-categories-basic/metadata/pygal.yaml @@ -1,7 +1,7 @@ library: pygal specification_id: parallel-categories-basic created: '2025-12-30T21:54:55Z' -updated: '2025-12-30T21:57:25Z' +updated: '2025-12-30T22:03:41Z' generated_by: claude-opus-4-5-20251101 workflow_run: 20606635585 issue: 0 @@ -10,23 +10,18 @@ library_version: 3.1.0 preview_url: https://storage.googleapis.com/pyplots-images/plots/parallel-categories-basic/pygal/plot.png preview_thumb: https://storage.googleapis.com/pyplots-images/plots/parallel-categories-basic/pygal/plot_thumb.png preview_html: https://storage.googleapis.com/pyplots-images/plots/parallel-categories-basic/pygal/plot.html -quality_score: 85 +quality_score: 90 review: strengths: - - Excellent parallel categories visualization with clear flow ribbons showing customer - journey paths across four dimensions - - Colorblind-safe palette with good distinction between product categories (blue, - yellow, teal, coral) - - Proper title format following spec-id 路 library 路 pyplots.ai convention - - Realistic e-commerce scenario with meaningful data showing different purchase - patterns - - Width-proportional ribbons correctly represent observation counts as specified + - Excellent parallel categories visualization with clear flow ribbons connecting + four dimensions + - Colorblind-safe palette with distinct colors for each product category + - Well-proportioned ribbons showing customer journey flows with appropriate opacity + - Clean layout with dimension labels at top and category labels positioned outside + bars + - Realistic e-commerce scenario with plausible purchase journey data weaknesses: - - Middle dimension labels (Channel, Payment) are missing - only first and last dimensions - show category labels - - The 'Cancelled' label on the rightmost axis is very small and barely readable - compared to other labels - - Code uses helper function xml_escape() which violates KISS principle (no functions/classes - rule) - - Gray bars for middle dimensions reduce visual clarity - consider using color coding - throughout + - Middle dimension category labels (Channel, Payment) are positioned below bars + but could overlap with ribbons in denser visualizations + - Cancelled outcome label at bottom right is quite small and harder to read than + other labels