Chart 4 (model predictions vs. observed) was picking the first row for a
given wave/model instead of summing across selected groups, so any district
whose first-returned group had zero counts (e.g. a suppressed race group)
showed a collapsed, flat modeled marker instead of the real aggregate
interval. Also fixes the rightmost wave label ("2021-22") clipping off the
edge of the small-multiple panels by anchoring edge ticks away from the
viewBox boundary instead of centering on it.
Chart 6's y-axis group labels (e.g. "American Indian / Alaska Native
Female") were wider than their margin and clipped past the left edge of the
SVG. Adds a shared shortGroupLabel() to colors.js and uses it here, matching
the convention already used in charts 2 and 5.
Chart 2 previously drew a plain bar to the modeled median next to an
observed diamond that often sat well past the bar's end, reading as if the
bar itself were an uncertainty range when it wasn't. Replaces it with an
actual horizontal box-and-whisker: whisker = the API's reported 90%
interval, box = the fitted approximation's 25th/75th percentiles (via a new
fit.quantile() inverse-CDF, exact round-trip of fitSkewedInterval's own
construction), median tick, observed diamond overlaid.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Rebuilds all 6 charts around a validated categorical race palette, row-based
sex encoding, and a consistent observed-vs-modeled mark convention (diamond
vs. filled bar/density) instead of ad hoc per-chart color schemes. Adds a
shared student-group filter (defaults to all 8 groups) that scopes every
chart's data from one place in ChartPanel.
Drops the D3 dependency entirely in favor of plain SVG, removing the
imperative-DOM bug class behind this app's repeated "fix the fix" commits.
Replaces the fake symmetric-normal posterior approximation with a skewed,
median-preserving fit to the API's interval bounds, clearly labeled as an
approximation. Fixes two broken SVG fill attributes, a decorative model
dropdown that never affected its chart, dead code, an orphaned component,
and a broken CSS token reference.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
- Create AGENTS.md: comprehensive agent guide covering architecture,
data flow, error bar convention (90% intervals), D3 usage patterns,
null safety pitfalls, deployment checklist, and related repos
- Update HANDOFF.md: mark CORS as resolved, document chart improvements
(Chart 5 ridgeline rewrite with synthetic draws + smooth rendering)
- Refresh README.md: accurate tech stack (D3 v7), updated file structure
with new chart files, corrected API endpoint table
- Rewrite RateDensityRidgeline.jsx with proper histogram-to-density conversion
- Build top-edge points from binned draws, then smooth with d3.curveBasis
- Construct complete area path: bottom edge + smoothed top + close
- Position observed rate diamonds above the ridge peak
- Add fetchDistrictDraws call in ChartPanel for all 4 quadrant models
- Pass modelDraws to ModelDrawsComparison component
- Rewrite Chart 4 with D3 showing:
- Density histogram from raw draws when available (per-year distribution)
- Fall back to interval-based rendering otherwise
- 90% credible intervals from quantile calculation
- Legend explaining colors (red=observed, teal=one-year, navy=three-year)
- Install d3@7
- Add fetchDistrictDraws API function (for future use with raw draws)
- Create RateDensityRidgeline component using D3.js
- Density ridges showing posterior distributions per race group
- Diamond markers for observed rates (matching R design)
- Dropdown to switch between model specifications
- Matches Civilytics color palette (navy fill, danger diamonds)
- Increase SVG dimensions in all 6 charts to prevent label truncation
- Fix ModelDrawsComparison: pass quadData so predictions render for three-year models
- Change error bars from 95% to 90% (legend text + SD calculation)
- Widen chart viewport: max-width 70rem vs default 60rem text width
- Fix deep link: fetch district name from API instead of showing 'Loading...'
Charts and their titles/captions need more horizontal space for readability. Single column layout ensures each chart renders at full container width without cramped side-by-side placement.
Source maps cause harmless but noisy 404 errors in browser dev tools when deployed to git-pages, since the hashed filenames change between local and CI builds. Disabling them eliminates these warnings without affecting app functionality.
The obsWidth, lowerX, upperWidth, and medX variables were declared inline within the SVG <g> element's children, which is invalid JavaScript/JSX. This caused 'ReferenceError: obsWidth is not defined' at runtime when rendering Chart 5.
Fix: Moved all const declarations to the top of the map callback, before the return statement.
- Add missing data/national_rates.json fixture (was only in src/data/, not served by Vite)
- LoadingAnimation.jsx: Use import.meta.env.BASE_URL for national rates path
- Ensures file is available at /crdc-demo/data/national_rates.json on git-pages
- App.jsx: Use import.meta.env.BASE_URL prefix for civilytics-logo.svg (was hardcoded as '/civilytics-logo.svg' → 404 on pages.civilytics.org/crdc-demo/)
- ChartPanel.jsx: Same fix for /data/national_rates.json path — was causing JSON.parse errors because the 404 HTML response couldn't be parsed
- App.jsx: Fix 'search another district' button href to use /crdc-demo/ instead of / (root)
- LoadingAnimation.jsx: Replace broken inline fetch helper with centralized api client from useApi.js — was bypassing envelope unwrapping ({status:'success',data:[...]}), causing all 43 API calls to fail silently
- ChartPanel.jsx: Same fix — replace raw fetch() calls with api.fetchDistrictEstimates(), fix national_rates.json path (remove hardcoded /crdc-demo/ prefix that breaks in dev), parallelize wave/model fetches with Promise.all for faster loading
Root causes fixed:
1. Navigation button linked to site root instead of app subdirectory → users lost their way after selecting a district
2. Dual API client implementations — inline fetch helpers didn't unwrap the JSON envelope structure, causing data parsing failures that made the page appear stuck on 'Organizing data...'
3. Sequential fetches in ChartPanel caused slow loading; parallelized for better UX
- Add VITE_PROXY_URL env var to route requests through a CORS proxy when
deployed as static site (CRDC API doesn't send Access-Control-Allow-Origin)
- Update useApi.js, LoadingAnimation.jsx, and ChartPanel.jsx to respect proxy
- Add nginx.conf with /api/v1/ reverse proxy + CORS headers for Docker deployment
- Include proxy.php — simple PHP CORS proxy for git-pages hosts that support PHP
- Document CORS workaround in README
Without this fix, browser fetch() calls are blocked by same-origin policy and
the app shows a blank white screen despite serving correct HTML.
- Set vite.config.mjs base to '/crdc-demo/' so asset paths resolve correctly
when served from a subdirectory (not root)
- Add favicon.svg in public/ folder
- Update index.html with correct absolute paths including /crdc-demo/ prefix
Replaces the GitHub Actions reference with .gitea/workflows/pages.yml,
following the sln-school-comparison deployment pattern. Documents the
git-pages.civilytics.org/crdc-demo/ URL and token configuration.
Adapts the sln-school-comparison pattern: builds Vite static site in CI,
then copies dist/ to a pages branch served by the git-pages webhook at
pages.civilytics.org/crdc-demo/
React + Vite static site demonstrating the CRDC School Arrest Rate API.
Features 6 interactive charts comparing observed arrest data against Bayesian
model estimates across U.S. school districts, with Civilytics visual identity.
- State selector and district search with 'interesting' suggestions (top arrests)
- Animated histogram loading grid showing posterior draw progress
- Charts: time series, rate by group, district vs national, model comparison quadrants, density proxy, exceedance probability
- Static JSON fixture for national rates (no API changes needed)
- Dockerfile + docker-compose.yml for self-hosted deployment
- GitHub Actions workflow and _config.yml for Git Pages
jaredandClaude Sonnet 5