November 2022
Intermediate to advanced
392 pages
10h 8m
Chinese
Content preview from Python算法交易
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.
238
｜
第
7
章
图 7-3：在不同子图中的流式价格数据，对数收益和动量数据
7.4.4
流式数据与柱线图
时间序列（散点图对象）并非是所有流数据可视化的最好选择。例如，某些流数据
使用高度变化的条形图效果更好。
7.7.4
节包含一个
Python
脚本，该脚本提供了适
用于条形图的示例数据。单个数据集（消息）由八个浮点数组成。下面的
Python
代
码会生成一个流式条形图（见图
7-4
）。在这种情况下，
x
轴数据通常不变。为了让
下面的代码能够工作，
BarsServer.py
脚本需要在单独的本地
Python
实例中运行。
In [21]: socket = context.socket(zmq.SUB)
In [22]: socket.connect('tcp://0.0.0.0:5556')
In [23]: socket.setsockopt_string(zmq.SUBSCRIBE, '')
In [24]: for _ in range(5):
msg = socket.recv_string()
print(msg)
60.361 53.504 67.782 64.165 35.046 94.227 20.221 54.716
79.508 48.210 84.163 73.430 53.288 38.673 4.962 78.920
53.316 80.139 73.733 55.549 21.015 20.556 49.090
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.