---
title: 'S4: Diagonal iso-value tier grid overlay with toggle'
type: task
status: completed
description: >-
  Create react-table/src/scatter-plot-overlay/scatter-plot-tier-overlay.js with
  build_tier_series({x_values, y_values}) returning Highcharts line-series for iso-value (x+y=k)
  diagonals at fixed quintile cuts of {x_i+y_i}. Low-opacity dashed series,
  enableMouseTracking:false, excluded from regression-stats. Toggled via show_tier_grid in
  scatter_plot_options. See parent plan.
base_uri: user:task/github/mistakia/league/293-s4-tier-grid-overlay.md
created_at: '2026-04-29T16:17:13.570Z'
entity_id: 73ccf23f-ec6b-4927-b1dc-bc5650ba277c
finished_at: '2026-04-29T17:52:49.726Z'
observations:
  - ████████████████████████████████████████████████
  - ████████████████████████████████████████████████
owner_identity_uri: █████████████████████████
priority: Medium
public_read: true
relations:
  - subtask_of [[user:task/github/mistakia/league/293-tracking-issue-for-data-view-scatter-plot.md]]
  - blocked_by [[user:task/github/mistakia/league/293-s3-settings-panel-scaffolding.md]]
started_at: '2026-04-29T17:48:52.447Z'
tags:
  - user:tag/league-xo-football.md
updated_at: '2026-06-08T16:58:19.983Z'
visibility_analyzed_at: '2026-11-05T23:48:03.893Z'
---