January 2012
Intermediate to advanced
584 pages
11h 56m
Chinese
Content preview from 操作介面設計模式 第二版
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312
|
第七章
資料刷色（
Data Brushing
）
圖
7
-
26
BBN Cornerstone
這是什麼
讓使用者在一個檢視畫面中選擇資料；在另一個畫面中同步顯示被選擇的資料。
何時使用
你可以同時顯示一個或多個資訊圖形。例如有兩份折線圖和一份散佈圖、或有一份
散佈圖搭配 一個表格、 或是一份圖 表與一個樹 狀結構、或 是一份地圖 與一段時間
軸……無論如何，只要各個圖表都是顯示相同資料集，即可使用本模式。
為何使用
資料刷色提供了一個格式非常豐富的互動式資料探索。首先，使用資訊圖形本身作
為「選取器」，使用者能夠選取一個資料點。有時候，直接用眼睛看，反而比較容
易找到興趣點（例如比沒那麼直接的動態查詢更容易）— 比方說圖表上的離群值
就很容易看出來並直接予以操作，但想要從數字上定義離群值則可能要多花幾秒鐘
（可能更久）。「我真的想要得到所有滿足 X > 200 且 Y > 5.6 的點嗎？不太確
定，先讓我把這個範圍框起來。」
接下來，在其他圖表中同步將這些資料點「刷上色彩」，使用者至少可在另一份圖
表的環境中觀察這些點。該點可能是相當具有價值的。再次以離群值為例，使用者
可能想要知道，這些離群值在不同資料空間中、用不同變數做索引時，會有什麼不
同的呈現 — 藉由這樣學習的過程，使用者對於產生資料的現象，有可能立即得出
觀察結果。
這裡有一個較大的原則，在於採用「
協作的檢視畫面
」（coordinated view）或「
互
有連結的檢視畫面
」（linked views）。同樣資料的多個不同檢視畫面，可
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.