var countryGroups = nbviz.countryDim.group().all(); #
❶
//
メインデータを作成する
var data = countryGroups.map( function(c) { #
❷
var cData = nbviz.data.countryData[c.key]; #
❸
var value = c.value;
// 1
人当たりの受賞者の場合は人口で割る
if(nbviz.valuePerCapita){
value = value / cData.population; #
❹
}
return {
key: c.key, // Japan
など
value: value, // 19
(受賞者数)など
code: cData.alpha3Code, // JPN
など
};
})
.sort(function(a, b) { #
❺
return b.value - a.value; //
降順
});
return data;
};
❶
countryDim
は
Crossfilter
の次元の
1
つ(「
15.4.7
Crossfilter
によるデータのフィルタリング」を参照)。
ここではグループキーとカウント値を提供する(例えば、
{key:Argentina, value:5
}
)。
❷配列の
map
メソッドを使い、国データセットから追加した要素で新しい配列を作成する。 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.
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.
Head of Cybersecurity
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.
Field Engineer
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.
Data Platform Tech Lead
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.