11library : seaborn
22specification_id : heatmap-basic
33created : ' 2025-12-23T00:46:00Z'
4- updated : ' 2026-02-15T21:30:48Z '
4+ updated : ' 2026-02-15T21:38:23Z '
55generated_by : claude-opus-4-6
66workflow_run : 20447949053
77issue : 0
@@ -10,7 +10,7 @@ library_version: 0.13.2
1010preview_url : https://storage.googleapis.com/pyplots-images/plots/heatmap-basic/seaborn/plot.png
1111preview_thumb : https://storage.googleapis.com/pyplots-images/plots/heatmap-basic/seaborn/plot_thumb.png
1212preview_html : null
13- quality_score : 82
13+ quality_score : 92
1414impl_tags :
1515 dependencies : []
1616 techniques :
@@ -25,131 +25,137 @@ impl_tags:
2525 - edge-highlighting
2626review :
2727 strengths :
28- - Excellent use of sns.clustermap for hierarchical row-clustering, showcasing a
29- distinctive seaborn capability
30- - Well-crafted synthetic data with intentional patterns that create a meaningful
31- story (Sales strong early, Engineering strong late, Finance stable)
32- - All font sizes explicitly set with good readability at target resolution
33- - Realistic business context with sensible performance score range
28+ - Excellent use of sns.clustermap — a distinctive seaborn feature that integrates
29+ hierarchical clustering with heatmap visualization
30+ - Intentional data patterns (Sales first-half, Engineering second-half, Finance
31+ stability, HR mid-year dip) create genuine visual storytelling
32+ - ' Strong visual refinement: custom colorbar positioning, spine removal, #fafafa
33+ background, white cell borders, and styled dendrogram'
34+ - All font sizes explicitly set and well-calibrated for the output resolution
35+ - Clean, well-organized code following KISS principles
3436 weaknesses :
35- - Missing Y-axis label (Department) — the ylabel is set to empty string
36- - Manual colorbar creation via ScalarMappable after disabling built-in cbar (cbar_pos=None)
37- is unnecessarily verbose — could use the built-in colorbar support
38- - Custom diverging palette via sns.diverging_palette(240, 10) is not a standard
39- colorblind-safe colormap — consider using RdBu_r or coolwarm for better accessibility
40- - ' Could push design further: no spine removal, no background color refinement,
41- annotation font could be larger'
42- image_description : ' The plot displays a clustered heatmap of monthly department
43- performance scores (0-100) for seven departments (Sales, Finance, Engineering,
44- Operations, Marketing, Support, HR) across twelve months (Jan-Dec). A diverging
45- blue-to-red colormap is used, centered at 50 — blue indicates low scores, red
46- indicates high scores. Each cell contains a white-text integer annotation of the
47- performance value. A dendrogram on the left groups departments by similarity via
48- hierarchical row-clustering (columns are not clustered). A vertical colorbar on
49- the right is labeled "Performance Score" with a 0-100 range. White gridlines separate
50- each cell. The title "heatmap-basic · seaborn · pyplots.ai" appears at the top
51- center. The X-axis is labeled "Month" and department names appear on the right
52- Y-axis. Clear patterns are visible: Sales strong first half fading later, Engineering
53- strong second half, Finance consistently high (~80-90), HR with lower scores mid-year.'
37+ - Coolwarm colormap could be replaced with a more colorblind-friendly diverging
38+ palette (e.g., RdBu or a custom perceptually-uniform option)
39+ - The Department axis label appears on the far right due to clustermap layout, slightly
40+ detached from the row labels
41+ - Data patterns could be slightly more varied — an additional extreme outlier or
42+ department with a sharp trend reversal would better demonstrate the heatmap full
43+ potential
44+ image_description : ' The plot displays a clustered heatmap showing monthly performance
45+ scores (0-100) across 7 departments (Sales, Finance, Engineering, Operations,
46+ Marketing, Support, HR). A coolwarm diverging colormap is used, centered at 50
47+ — red cells indicate high performance, blue cells low performance. Each cell contains
48+ a white numeric annotation showing the exact score. A row dendrogram on the left
49+ groups departments by similarity via hierarchical clustering (columns are not
50+ clustered). The colorbar on the far left is labeled "Performance Score" with ticks
51+ at 0, 25, 50, 75, 100. Axis labels read "Month" (x-axis) and "Department" (y-axis,
52+ on right side). The title "heatmap-basic · seaborn · pyplots.ai" appears at the
53+ top. The background is a subtle off-white (#fafafa), cells are separated by white
54+ gridlines, and spines are removed for a clean look. Clear patterns are visible:
55+ Sales is strong in the first half, Engineering ramps up in the second half, Finance
56+ is consistently high (80-91), and HR shows a mid-year dip.'
5457 criteria_checklist :
5558 visual_quality :
56- score : 24
59+ score : 28
5760 max : 30
5861 items :
5962 - id : VQ-01
6063 name : Text Legibility
6164 score : 8
6265 max : 8
6366 passed : true
64- comment : ' All font sizes explicitly set: title 24pt, xlabel 20pt, ticks 16pt,
65- annotations 14pt '
67+ comment : ' All font sizes explicitly set: title 24pt, axis labels 20pt, ticks
68+ 16pt, annotations 16pt. All perfectly readable '
6669 - id : VQ-02
6770 name : No Overlap
6871 score : 6
6972 max : 6
7073 passed : true
71- comment : No overlapping text anywhere
74+ comment : No overlapping text anywhere; annotations fit cleanly within cells
7275 - id : VQ-03
7376 name : Element Visibility
74- score : 5
77+ score : 6
7578 max : 6
7679 passed : true
77- comment : Annotations readable; could be slightly larger for cell size
80+ comment : Cell sizes well-proportioned for a 7x12 matrix; colors and annotations
81+ clearly distinguishable
7882 - id : VQ-04
7983 name : Color Accessibility
8084 score : 3
8185 max : 4
8286 passed : true
83- comment : Custom diverging blue-red palette functional but not a standard colorblind-safe
84- option
87+ comment : Coolwarm diverging palette is acceptable but not optimal for deuteranopia;
88+ not a red-green issue though
8589 - id : VQ-05
8690 name : Layout Balance
8791 score : 3
8892 max : 4
8993 passed : true
90- comment : Decent layout; dendrogram and colorbar well-placed but some wasted
91- vertical space
94+ comment : Good canvas utilization; minor issue with dendrogram and colorbar
95+ taking space on the left, Department label on the far right
9296 - id : VQ-06
9397 name : Axis Labels & Title
94- score : 1
98+ score : 2
9599 max : 2
96- passed : false
97- comment : X-axis labeled Month but Y-axis label is empty string — missing Department
98- label
100+ passed : true
101+ comment : Month, Department, Performance Score are descriptive and appropriate
102+ for this context
99103 design_excellence :
100- score : 12
104+ score : 15
101105 max : 20
102106 items :
103107 - id : DE-01
104108 name : Aesthetic Sophistication
105109 score : 6
106110 max : 8
107111 passed : true
108- comment : Clustermap with custom diverging palette , white gridlines, and hierarchical
109- clustering shows design thought above defaults
112+ comment : Customized colorbar position, facecolor refinement , white cell borders,
113+ spine removal, dendrogram styling — clearly above defaults
110114 - id : DE-02
111115 name : Visual Refinement
112- score : 4
116+ score : 5
113117 max : 6
114118 passed : true
115- comment : White cell gridlines, custom colorbar placement, controlled dendrogram
116- ratio; some defaults remain
119+ comment : ' Spines removed, subtle #fafafa background, white linewidths, dendrogram
120+ custom facecolor, medium fontweight annotations '
117121 - id : DE-03
118122 name : Data Storytelling
119123 score : 4
120124 max : 6
121125 passed : true
122- comment : ' Injected patterns create a story: Sales strong early , Engineering
123- strong late , Finance stable , HR dip mid-year '
126+ comment : Data patterns are intentional and visible ( Sales first-half , Engineering
127+ second-half , Finance stability , HR dip); clustering groups similar departments
124128 spec_compliance :
125- score : 14
129+ score : 15
126130 max : 15
127131 items :
128132 - id : SC-01
129133 name : Plot Type
130134 score : 5
131135 max : 5
132136 passed : true
133- comment : Correct heatmap type via seaborn clustermap
137+ comment : Correct heatmap using seaborn clustermap variant
134138 - id : SC-02
135139 name : Required Features
136140 score : 4
137141 max : 4
138142 passed : true
139143 comment : Diverging colormap, cell annotations, colorbar legend, logical row
140- ordering via clustering
144+ ordering via clustering — all present
141145 - id : SC-03
142146 name : Data Mapping
143147 score : 3
144148 max : 3
145149 passed : true
146- comment : Departments as rows, months as columns, performance scores as values
150+ comment : X=months (columns), Y=departments (rows), values mapped to color
151+ intensity
147152 - id : SC-04
148- name : Title & Legend
149- score : 2
153+ name : Title Format
154+ score : 3
150155 max : 3
151156 passed : true
152- comment : Title format correct; colorbar serves as legend; Y-axis label absent
157+ comment : heatmap-basic · seaborn · pyplots.ai correct; colorbar serves as
158+ legend
153159 data_quality :
154160 score : 14
155161 max : 15
@@ -159,30 +165,31 @@ review:
159165 score : 5
160166 max : 6
161167 passed : true
162- comment : Shows variation, patterns, clustering — but could include more extreme
163- outliers
168+ comment : Shows variation, patterns, high/low values, and clustering; could
169+ show a few more extreme outlier patterns
164170 - id : DQ-02
165171 name : Realistic Context
166172 score : 5
167173 max : 5
168174 passed : true
169- comment : ' Genuine business scenario: department performance by month'
175+ comment : Monthly department performance metrics — plausible business scenario
176+ with real department names
170177 - id : DQ-03
171178 name : Appropriate Scale
172179 score : 4
173180 max : 4
174181 passed : true
175- comment : Performance scores 5-95 are realistic
182+ comment : Performance scores 5-95 are realistic for a 0-100 metric
176183 code_quality :
177- score : 9
184+ score : 10
178185 max : 10
179186 items :
180187 - id : CQ-01
181188 name : KISS Structure
182189 score : 3
183190 max : 3
184191 passed : true
185- comment : Clean imports → data → plot → save flow
192+ comment : Clean Imports → Data → Plot → Save flow, no functions/classes
186193 - id : CQ-02
187194 name : Reproducibility
188195 score : 2
@@ -194,36 +201,35 @@ review:
194201 score : 2
195202 max : 2
196203 passed : true
197- comment : Only matplotlib, numpy, seaborn imported
204+ comment : Only matplotlib.pyplot , numpy, seaborn — all used
198205 - id : CQ-04
199206 name : Code Elegance
200- score : 1
207+ score : 2
201208 max : 2
202209 passed : true
203- comment : Manual ScalarMappable colorbar after setting cbar_pos=None is slightly
204- verbose
210+ comment : Appropriate complexity, intentional data patterns, clean organization
205211 - id : CQ-05
206212 name : Output & API
207213 score : 1
208214 max : 1
209215 passed : true
210- comment : Saves as plot.png, no deprecated functions
216+ comment : Saves as plot.png with dpi=300, bbox_inches=tight
211217 library_features :
212- score : 9
218+ score : 10
213219 max : 10
214220 items :
215221 - id : LM-01
216222 name : Idiomatic Usage
217- score : 4
223+ score : 5
218224 max : 5
219225 passed : true
220- comment : Good use of sns.clustermap and sns.diverging_palette; manual colorbar
221- handling is less idiomatic
226+ comment : Expert use of sns.clustermap with annot, fmt, cmap, center, cbar_kws,
227+ cbar_pos, dendrogram_ratio
222228 - id : LM-02
223229 name : Distinctive Features
224230 score : 5
225231 max : 5
226232 passed : true
227- comment : sns.clustermap with hierarchical clustering is a distinctive seaborn
228- feature not easily replicated elsewhere
229- verdict : REJECTED
233+ comment : sns.clustermap integrates hierarchical clustering + heatmap + dendrogram
234+ — a feature unique to seaborn
235+ verdict : APPROVED
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