shawnbot/topogram

Feature? Absolute scaling of cartogram regions

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#21 opened on 2015年7月19日

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help wanted

説明

Would it be possible for the cartogram to scale features absolutely as well as relatively? Only the latter seems to occur at the moment that is, total area seems to preserved as U.S. states are scaled against one another. For example, with the dataset being presented in the attached image, the US should being nearly twice as large as it actually is, yet the cartogram is roughly the same size as the unmodified map. usef2010cartogram-scalingref

コントリビューターガイド

技術スタック
javascripthtml
領域
frontenddata
Issue 種別
feature
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
4
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
over 1 week
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
stale
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
mostly clear
前提条件
Basic knowledge of D3.jsUnderstanding of cartogram algorithmsFamiliarity with TopoJSON
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
15
調査方針
The current cartogram implementation in topogram likely computes relative scaling based on the total area of all features. To implement absolute scaling, modify the scaling logic to allow features to scale proportionally to a given value (e.g., population) without preserving total area. Look at the main cartogram function in the repository, possibly in index.js or similar, and check how the area of each feature is calculated and adjusted. Review D3.js documentation on path generation and area calculations. Consider adding a new parameter for scaling mode (relative vs absolute) and adjusting the algorithm accordingly.
Feature? Absolute scaling of cartogram regions · shawnbot/topogram#21 | Good First Issue