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.
214
付録 演習の解答
v_edge = values @ vsobel_r
return np.hypot(h_edge, v_edge)
これを硬貨の画像に適用してみましょう。
sobel_mag = ndi.generic_filter(coins, sobel_magnitude_filter, size=3)
plt.imshow(sobel_mag, cmap='viridis');
■
A.4
解答：
SciPy
を使った曲線回帰
以下は「
3.5.1
演習：
SciPy
を使った曲線回帰」の解答です。
curve_fit
関数のドキュメントの先頭部分を見てみましょう。
Use nonlinear least squares to fit a function, f, to data.
非線形最小二乗法を使って関数
f
をデータに回帰する。
Assumes ``ydata = f(xdata, *params) + eps``
``ydata = f(xdata, *params) + eps``
を仮定。
Parameters
パラメータ
----------
f : callable
呼び出し可能
The model function, f(x, ...). It must take the independent
variable as the first argument and the parameters to fit as
図
A-2
水平と垂直のソーベルフィルタをかけた硬貨の画像
215 ...
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.