11library : plotnine
22specification_id : stereonet-equal-area
33created : ' 2026-03-15T22:58:28Z'
4- updated : ' 2026-03-15T23:09:34Z '
4+ updated : ' 2026-03-15T23:17:05Z '
55generated_by : claude-opus-4-5-20251101
66workflow_run : 23121188785
77issue : 4576
@@ -10,99 +10,103 @@ library_version: 0.15.3
1010preview_url : https://storage.googleapis.com/pyplots-images/plots/stereonet-equal-area/plotnine/plot.png
1111preview_thumb : https://storage.googleapis.com/pyplots-images/plots/stereonet-equal-area/plotnine/plot_thumb.png
1212preview_html : null
13- quality_score : 79
13+ quality_score : 83
1414review :
1515 strengths :
1616 - Mathematically correct equal-area projection with proper pole and great circle
17- computations
18- - Excellent data quality with realistic geological measurements and three well-separated
19- feature types
20- - Clean visual design with all unnecessary chrome removed and colorblind-safe palette
21- with shape redundancy
22- - Kamb-style density contours properly computed and displayed
17+ calculations
18+ - Excellent colorblind-safe palette with redundant shape encoding for accessibility
19+ - Clean visual design with removed axes, subtle grid, and well-placed cardinal labels
20+ - Cluster annotations provide useful geological context (mean strike/dip)
21+ - Good use of plotnine grammar of graphics with multiple layered geoms
2322 weaknesses :
24- - Missing stereonet grid lines (equal-area net) required by spec
25- - Degree labels (30deg, 60deg, etc.) are too small at size=10 and nearly invisible
26- - Great circle computation is verbose — could be more concise
27- - No distinctive plotnine features used beyond basic grammar of graphics
28- image_description : ' The plot shows a Schmidt equal-area (lower-hemisphere) stereonet
29- projection with a bold primitive circle and tick marks every 10 degrees around
30- the perimeter. Cardinal directions (N, E, S, W) are labeled in bold at the four
31- poles. Three geological feature types are plotted: Bedding (blue circles), Fault
32- (pink/salmon diamonds), and Joint (green squares). Poles to planes are shown as
33- colored scatter points clustered in three distinct groups — Joints cluster in
34- the NNE quadrant, Bedding poles cluster in the SSE quadrant, and Fault poles cluster
35- in the WSW quadrant. Great circles (curved lines) are drawn for representative
36- planes of each type, color-coded to match. Dashed gray contour lines (Kamb-style
37- density) surround the pole clusters. Degree labels at 30-degree intervals are
38- present but very faint. The legend (Feature Type) is positioned to the right outside
39- the circle. The title reads stereonet-equal-area · plotnine · pyplots.ai at the
40- top.'
23+ - Cluster annotations overlap with data points, reducing readability
24+ - Density contours use 2D KDE rather than true Kamb contouring method
25+ - Some wasted whitespace at bottom of canvas
26+ image_description : ' The plot displays a structural geology stereonet using the Schmidt
27+ equal-area (lower-hemisphere) projection. A black primitive circle represents
28+ the horizontal plane with N, E, S, W cardinal direction labels in bold and degree
29+ labels every 30° around the perimeter. Three geological feature types are plotted:
30+ Bedding (blue circles, clustered in the SE quadrant), Fault (gold/amber diamonds,
31+ clustered in the SW quadrant), and Joint (purple squares, clustered in the N/NW
32+ quadrant). Great circles are drawn in corresponding colors for representative
33+ planes of each type. Dashed gray density contours (2D KDE) surround each pole
34+ cluster. Subtle light gray grid lines show concentric equal-area circles at 30°
35+ dip intervals and radial lines at 30° azimuth intervals. Italic annotations near
36+ each cluster show mean strike/dip values. The legend is positioned to the right
37+ of the stereonet. The title reads "stereonet-equal-area · plotnine · pyplots.ai".
38+ The figure uses a 1:1 aspect ratio (3600x3600 px).'
4139 criteria_checklist :
4240 visual_quality :
4341 score : 25
4442 max : 30
4543 items :
4644 - id : VQ-01
4745 name : Text Legibility
48- score : 6
46+ score : 7
4947 max : 8
5048 passed : true
51- comment : Title and cardinal labels clear; degree labels at size=10 too small
49+ comment : ' Font sizes explicitly set: title 24pt, cardinal labels 18pt, degree
50+ labels 13pt, legend 16/14pt. All readable.'
5251 - id : VQ-02
5352 name : No Overlap
54- score : 6
53+ score : 4
5554 max : 6
56- passed : true
57- comment : No overlapping text or data elements
55+ passed : false
56+ comment : Cluster annotations overlap with data points, reducing readability
57+ of labels.
5858 - id : VQ-03
5959 name : Element Visibility
6060 score : 5
6161 max : 6
6262 passed : true
63- comment : Poles well-sized, great circles visible, contours could be more prominent
63+ comment : Poles well-sized with distinct shapes. Great circles and density
64+ contours visible. Grid appropriately subtle.
6465 - id : VQ-04
6566 name : Color Accessibility
66- score : 3
67+ score : 4
6768 max : 4
6869 passed : true
69- comment : Colorblind-safe palette with shape redundancy; fault color renders
70- pinkish
70+ comment : Colorblind-safe blue/amber/purple palette with redundant shape encoding.
7171 - id : VQ-05
7272 name : Layout & Canvas
7373 score : 3
7474 max : 4
7575 passed : true
76- comment : Good canvas utilization; some empty space below circle
76+ comment : Square figure, stereonet well-centered, some wasted whitespace at
77+ bottom.
7778 - id : VQ-06
7879 name : Axis Labels & Title
7980 score : 2
8081 max : 2
8182 passed : true
82- comment : Axes correctly hidden; cardinal directions serve as labels
83+ comment : Axes hidden (appropriate for stereonet). Cardinal directions and
84+ degree labels serve as orientation.
8385 design_excellence :
84- score : 12
86+ score : 13
8587 max : 20
8688 items :
8789 - id : DE-01
8890 name : Aesthetic Sophistication
8991 score : 5
9092 max : 8
9193 passed : true
92- comment : Custom palette, clean chrome removal, above defaults but not exceptional
94+ comment : Custom color palette with good harmony, different marker shapes,
95+ clean stereonet design.
9396 - id : DE-02
9497 name : Visual Refinement
9598 score : 4
9699 max : 6
97100 passed : true
98- comment : All panel elements removed, subtle dashed contours, clean background
101+ comment : Axes/spines/backgrounds removed. Grid subtle. Tick marks clean. Good
102+ refinement.
99103 - id : DE-03
100104 name : Data Storytelling
101- score : 3
105+ score : 4
102106 max : 6
103107 passed : true
104- comment : Clear spatial clustering visible; density contours help; no annotation
105- of clusters
108+ comment : Cluster annotations with mean strike/dip, distinct color/shape encoding,
109+ density contours reinforce patterns.
106110 spec_compliance :
107111 score : 14
108112 max : 15
@@ -112,111 +116,115 @@ review:
112116 score : 5
113117 max : 5
114118 passed : true
115- comment : Correct lower-hemisphere equal-area stereonet
119+ comment : Correct equal-area Schmidt net lower-hemisphere projection.
116120 - id : SC-02
117121 name : Required Features
118122 score : 3
119123 max : 4
120124 passed : true
121- comment : Missing equal-area net grid lines
125+ comment : All features present. Density contours use 2D KDE approximation rather
126+ than true Kamb method.
122127 - id : SC-03
123128 name : Data Mapping
124129 score : 3
125130 max : 3
126131 passed : true
127- comment : Strike/dip correctly projected
132+ comment : Strike/dip correctly converted to equal-area projection coordinates.
128133 - id : SC-04
129134 name : Title & Legend
130135 score : 3
131136 max : 3
132137 passed : true
133- comment : Correct title format and legend labels
138+ comment : Title format correct. Legend shows all three feature types with matching
139+ colors and shapes.
134140 data_quality :
135- score : 15
141+ score : 14
136142 max : 15
137143 items :
138144 - id : DQ-01
139145 name : Feature Coverage
140- score : 6
146+ score : 5
141147 max : 6
142148 passed : true
143- comment : Three feature types with distinct orientations, great circles, poles,
144- and density contours
149+ comment : Three distinct feature types with different orientation distributions.
150+ Great circles for representative planes.
145151 - id : DQ-02
146152 name : Realistic Context
147153 score : 5
148154 max : 5
149155 passed : true
150- comment : Realistic geological field measurements
156+ comment : Realistic geological field measurements with proper strike/dip conventions.
151157 - id : DQ-03
152158 name : Appropriate Scale
153159 score : 4
154160 max : 4
155161 passed : true
156- comment : Strike and dip values realistic for each feature type
162+ comment : Realistic strike/ dip values for bedding, faults, and joints.
157163 code_quality :
158- score : 9
164+ score : 10
159165 max : 10
160166 items :
161167 - id : CQ-01
162168 name : KISS Structure
163169 score : 3
164170 max : 3
165171 passed : true
166- comment : Linear flow, no functions or classes
172+ comment : Clean linear flow with no functions or classes.
167173 - id : CQ-02
168174 name : Reproducibility
169175 score : 2
170176 max : 2
171177 passed : true
172- comment : np.random.seed(42) set
178+ comment : np.random.seed(42) set.
173179 - id : CQ-03
174180 name : Clean Imports
175181 score : 2
176182 max : 2
177183 passed : true
178- comment : All imports used
184+ comment : All imports used.
179185 - id : CQ-04
180186 name : Code Elegance
181- score : 1
187+ score : 2
182188 max : 2
183189 passed : true
184- comment : Great circle loop verbose; matplotlib contour extraction adds complexity
190+ comment : Appropriate complexity for stereonet calculations. No over-engineering.
185191 - id : CQ-05
186192 name : Output & API
187193 score : 1
188194 max : 1
189195 passed : true
190- comment : Saves as plot.png
196+ comment : Saves as plot.png using current plotnine API.
191197 library_mastery :
192- score : 4
198+ score : 7
193199 max : 10
194200 items :
195201 - id : LM-01
196202 name : Idiomatic Usage
197- score : 3
203+ score : 4
198204 max : 5
199205 passed : true
200- comment : Proper grammar of graphics with layered geoms and aes mappings
206+ comment : Good grammar of graphics usage with multiple geom layers, aes mappings,
207+ scales, and theme customization.
201208 - id : LM-02
202209 name : Distinctive Features
203- score : 1
210+ score : 3
204211 max : 5
205- passed : false
206- comment : Generic usage; no distinctive plotnine features leveraged
207- verdict : REJECTED
212+ passed : true
213+ comment : Uses geom_density_2d with after_stat for alpha mapping, layer composition,
214+ and guides control.
215+ verdict : APPROVED
208216impl_tags :
209- dependencies :
210- - scipy
217+ dependencies : []
211218 techniques :
212219 - polar-projection
213- - layer-composition
214220 - annotations
221+ - layer-composition
222+ - manual-ticks
215223 patterns :
216224 - data-generation
217225 - iteration-over-groups
218- dataprep :
219- - kde
226+ dataprep : []
220227 styling :
221228 - minimal-chrome
222229 - alpha-blending
230+ - grid-styling
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