November 2018
Intermediate to advanced
272 pages
6h 51m
Japanese
book
エレガントなSciPy ―Pythonによる科学技術計算
by Juan Nunez-Iglesias, Stéfan van der Walt, Harriet Dashnow, 山崎 邦子, 山崎 康宏
Content preview from エレガントなSciPy ―Pythonによる科学技術計算
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,
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.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.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.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.
13
1.4 正規化
Genes in data_table: 20500
Genes in gene_info: 20503
遺伝子長データには、実験で実際に計数されたものより多くの遺伝子が含まれていました。フィ
ルタをかけて関係ある遺伝子だけを抜き出し、リード数データと同じ順番に並べてみましょう。
ここで、
pandas
のインデックス付けが役立つのです。
2
つのデータソースから遺伝子名の交点
（
intersection
）が得られるので、それを使って両方のデータセットにインデックスを付け、同じ遺
伝子が同じ順番に並ぶようにします。
# Subset gene info to match the count data
リード数データの遺伝子と一致する遺伝子の情報を抜き出す。
matched_index = pd.Index.intersection(data_table.index, gene_info.index)
次に、遺伝子名の交点を使ってリード数データにインデックスを付けます。
# 2D ndarray containing expression counts for each gene in each individual
各標本の各遺伝子の発現リード数が格納された
2
次元の
ndarray
counts = np.asarray(data_table.loc[matched_index], dtype=int)
gene_names = np.array(matched_index)
# Check ...
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.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.