update(density-basic): bokeh — comprehensive quality review

Comprehensive quality review: HoverTool, NumeralTickFormatter, refined rug and grid.

Author: MarkusNeusinger

plots/density-basic/implementations/bokeh.py

@@ -1,12 +1,12 @@
 """ pyplots.ai
 density-basic: Basic Density Plot
-Library: bokeh 3.8.1 | Python 3.13.11
-Quality: 92/100 | Created: 2025-12-23
+Library: bokeh 3.8.2 | Python 3.14
+Quality: /100 | Updated: 2026-02-23
 """
 
 import numpy as np
 from bokeh.io import export_png
-from bokeh.models import ColumnDataSource
+from bokeh.models import ColumnDataSource, HoverTool, NumeralTickFormatter
 from bokeh.plotting import figure
 
 
@@ -36,16 +36,16 @@
 source = ColumnDataSource(data={"x": x_range, "density": density})
 
 # Rug plot data (individual observations)
-rug_y_pos = -0.0004  # Position below x-axis
+rug_y_pos = -0.0006
 rug_source = ColumnDataSource(
     data={
         "x": response_times,
         "y0": np.full_like(response_times, rug_y_pos),
-        "y1": np.full_like(response_times, rug_y_pos + 0.0004),
+        "y1": np.full_like(response_times, rug_y_pos + 0.0008),
     }
 )
 
-# Create figure (4800 x 2700 px for 16:9 landscape)
+# Create figure
 p = figure(
     width=4800,
     height=2700,
@@ -55,36 +55,50 @@
 )
 
 # Fill under the curve
-p.varea(x="x", y1=0, y2="density", source=source, fill_color="#306998", fill_alpha=0.35)
+p.varea(x="x", y1=0, y2="density", source=source, fill_color="#306998", fill_alpha=0.25)
 
 # Density curve
-p.line(x="x", y="density", source=source, line_color="#306998", line_width=5, line_alpha=0.95)
+density_line = p.line(x="x", y="density", source=source, line_color="#306998", line_width=6, line_alpha=0.9)
+
+# Hover tool showing density values at cursor position
+hover = HoverTool(
+    renderers=[density_line],
+    tooltips=[("Response Time", "@x{0.0} ms"), ("Density", "@density{0.00000}")],
+    mode="vline",
+    line_policy="nearest",
+)
+p.add_tools(hover)
 
 # Rug plot - vertical segments at bottom
-p.segment(x0="x", y0="y0", x1="x", y1="y1", source=rug_source, line_color="#306998", line_width=2, line_alpha=0.5)
+p.segment(x0="x", y0="y0", x1="x", y1="y1", source=rug_source, line_color="#306998", line_width=3, line_alpha=0.5)
 
-# Style text sizes for large canvas (scaled up)
+# Text sizes for large canvas
 p.title.text_font_size = "36pt"
 p.xaxis.axis_label_text_font_size = "28pt"
 p.yaxis.axis_label_text_font_size = "28pt"
 p.xaxis.major_label_text_font_size = "22pt"
 p.yaxis.major_label_text_font_size = "22pt"
 
+# Y-axis tick format
+p.yaxis.formatter = NumeralTickFormatter(format="0.0000")
+
 # Axis styling
 p.xaxis.axis_line_width = 2
 p.yaxis.axis_line_width = 2
-p.xaxis.major_tick_line_width = 2
-p.yaxis.major_tick_line_width = 2
+p.xaxis.minor_tick_line_color = None
+p.yaxis.minor_tick_line_color = None
+p.xaxis.major_tick_line_color = None
+p.yaxis.major_tick_line_color = None
 
-# Grid styling
-p.xgrid.grid_line_alpha = 0.3
-p.ygrid.grid_line_alpha = 0.3
-p.xgrid.grid_line_dash = "dashed"
-p.ygrid.grid_line_dash = "dashed"
+# Grid - y-axis only, subtle
+p.xgrid.grid_line_color = None
+p.ygrid.grid_line_alpha = 0.15
+p.ygrid.grid_line_width = 1
 
 # Background
 p.background_fill_color = "#fafafa"
 p.border_fill_color = "#ffffff"
+p.outline_line_color = None
 
 # Remove toolbar
 p.toolbar_location = None

plots/density-basic/metadata/bokeh.yaml

@@ -1,26 +1,26 @@
 library: bokeh
 specification_id: density-basic
 created: '2025-12-23T10:03:19Z'
-updated: '2025-12-23T10:10:15Z'
-generated_by: claude-opus-4-5-20251101
+updated: '2026-02-23T22:38:00+00:00'
+generated_by: claude-opus-4-6
 workflow_run: 20457534046
 issue: 0
-python_version: 3.13.11
-library_version: 3.8.1
+python_version: 3.14.3
+library_version: 3.8.2
 preview_url: https://storage.googleapis.com/pyplots-images/plots/density-basic/bokeh/plot.png
 preview_thumb: https://storage.googleapis.com/pyplots-images/plots/density-basic/bokeh/plot_thumb.png
 preview_html: https://storage.googleapis.com/pyplots-images/plots/density-basic/bokeh/plot.html
-quality_score: 92
+quality_score: null
 impl_tags:
   dependencies: []
   techniques: []
   patterns:
-    - data-generation
-    - columndatasource
+  - data-generation
+  - columndatasource
   dataprep:
-    - kde
+  - kde
   styling:
-    - alpha-blending
+  - alpha-blending
 review:
   strengths:
   - Excellent manual KDE implementation using Silverman's rule for bandwidth selection