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如何使用 IQ Option 交易加密货币?

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About

This is a Python wrapper for TA-LIB based on Cython instead of SWIG. From the homepage:

  • Includes 150+ indicators such as ADX, MACD, RSI, Stochastic, Bollinger 如何使用 IQ Option 交易加密货币? Bands, etc.
  • Candlestick pattern recognition
  • Open-source API for C/C++, Java, Perl, Python and 100% Managed .NET

The original Python bindings use SWIG which unfortunately are difficult to install and 如何使用 IQ Option 交易加密货币? aren't as efficient as they could be. Therefore this project uses Cython and Numpy to efficiently and cleanly bind to TA-Lib -- producing results 2-4 times faster than the SWIG interface.

Install TA-Lib or Read the Docs

Examples

Similar to TA-Lib, the function interface provides a lightweight wrapper of the exposed TA-Lib indicators.

Each function returns an output array and have default values for their parameters, 如何使用 IQ Option 交易加密货币? unless specified as keyword arguments. Typically, these 如何使用 IQ Option 交易加密货币? functions will have an initial "lookback" period (a required number of observations before an output is generated) set to NaN .

All of the following examples use the function API:

Calculate a simple moving average of the close prices:

Calculating bollinger bands, with triple exponential moving average:

Calculating momentum of the close prices, with a time period of 5:

Abstract API Quick Start

If you're already familiar with using the function API, you should feel right at home using the abstract API. Every function takes the same input, passed as a dictionary of Numpy arrays:如何使用 IQ Option 交易加密货币?

Functions can either be imported directly or instantiated by name:

From there, calling functions is basically the same as the function API:

Learn about more advanced usage of TA-Lib here.

Supported Indicators

We can show all the TA functions supported by TA-Lib, either as a list or as a dict sorted by group (e.g. "Overlap Studies", "Momentum Indicators", etc):

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终于有人把 Wifi 6 说清楚了

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小米近期发布了10周年梦幻手机——小米10,正式进入高端手机市场。除去各项参数,产品本身没有什么惊喜,但是小米10引入了一个重大技术升级,引起了广泛关注。雷军在发布会上专门用了5分钟来讲这个技术——WiFi 6,可能每个人都是第一次听说WiFi 6,那么这个雷军花5分钟来讲的WiFi 6到底是什么?

WiFi6是什么?

WiFi 6,其实就是第6代无线技术——IEEE 802.11 ax,802.11 是什么?你估计不知道。

1997年,全球最大的专业学术组织电气电子工程师协会(Institute of Electrical and ElectronicsEngineers,IEEE)推出了世界上第一个无线局域网标准IEEE802.11,工作频段为2.4GHz,数据传输速率为2Mbit/s,实现了无线上网,解决了上网受网线束缚的问题。为满足日益增长的无线上网需求,IEEE先后推出了802.11a,802.11b,802.11g,802.11n,802.11ac等标准(见下图),得到了大量厂商支持,获得了广泛应用,特别是广泛应用于宾馆、饭店、机场、车站、体育馆、会场、大学教室、图书馆、办公室、家庭等室内。

随着手机和平板电脑等无线终端的普及和应用,人手1部或多部无线终端成为常态。无线终端接入数量的大幅提升,对无线接入带宽、并发数量、时延等提出了更高要求。为满足人们对无线接入的需求,IEEE802.11工作组从2014年开始研发新的无线接入标准802.11ax,并于2019年中正式发布,是IEEE 802.11无线局域网标准的最新版本,提供了对之前的网络标准的兼容,也包括现在主流使用的802.11n/ac。电气电子工程师学会为其定义的名称为IEEE 802.11ax,负责商业认证的Wi-Fi联盟为方便宣传而称作WiFi 6。

WiFi6有哪些特点?

WiFi 6在160MHz信道宽度下,单流最快速率为1201Mbit/s,理论最大数据吞吐量9.6Gbps。跟前五代比一比:第一代 802.11b(Wi-Fi 1),最快11Mbit/s第二代 802.11a(Wi-Fi 2),最快54Mbit/s第三代 802.11g(Wi-Fi 3),最快54Mbit/s第四代 802.11n(Wi-Fi 4),单流带宽最快150Mbit/s第五代 802.11ac(Wi-Fi 5),单流带宽最快867Mbit/s 相对WiFi 5(802.11ac),提升至1.4倍;相对WiFi 4(802.11n),提升至8倍。

这里的续航针对连接上WiFi 6路由器的终端。WiFi 6采用TWT(目标唤醒时间),路由器可以统一调度无线终端休眠和数据传输的时间,不仅可以唤醒协调无线终端发送、接收数据的时机,减少多设备无序竞争信道的情况,还可以将无线终端分组到不同的TWT周期,增加睡眠时间,提高设备电池寿命。

③ 延迟 WiFi 6平均延迟降低为:20ms,WiFi 5平均延迟是30ms。

WiFi6核心技术

WiFi 6与前面几代无线技术不同的地方在于引进或者升级了两大技术,MU-MIMO(Multi-UserMultiple-Input Multiple-Output,多用户-多输入多输出)和OFDMA(正交频分多址技术)。

WiFi 5在下行用了MU-MIMO技术,WiFi 6 则延续了WiFi 5 所带来的MU-MIMO (多用户多输入多输出系统),但WiFi 6 支持完整版的MU-MIMO 技术,支持上下行,可以一次同时支撑8 个终端设备上行/下行传输更多数据,如何使用 IQ Option 交易加密货币? 是WiFi5 的两倍。WiFi 6让路由器利用多天线同时跟多个终端设备进行沟通,做到“一心多用”。比起过去只能单天线单设备同时通信的设计,MU-MIMO更能胜任提升网络速率,连接更多设备的需求。

与WiFi 5采用OFDM(正交频分复用技术)技术不同,WiFi6借用了蜂窝网络采用的OFDMA,多个终端可同时并行传输,不必排队等待、相互竞争,从而提升效率和降低时延。举个例子,原来一个时间段只能有一个载波去传输一个数据包,采用OFDMA 后就相当于在一个时间段可以有多个载波同时传输多个数据包。

WiFi6值得拥有吗?

答案是肯定的,但不是现在。

由于WiFi 6 技术刚出来,芯片还没有成熟,产量不高,所以现在市面上WiFi 6 相关路由器价格还是特别昂贵,动辄上千元。

如果你家庭有较多的WiFi 6终端手机(iPhone11、三星s10/note10、小米10等手机),较多支持WiFi 6的笔记本电脑和其他的设备,内网有NAS及影音服务;那么WiFi 6非常值得投资,如果没有的话,可以等WiFi 6路由器普及,升级路由器可以考虑WiFi 5先过度。

WiFi6和5G

WiFi 6和5G 对比怎么样呢?

5G是蜂窝数字移动通信技术,既可用于广域高速移动通信,又可用于室内无线上网,具有传输速率高、时延小、并发能力强等优点,但系统复杂、成本高。WiFi 6是无线接入技术,主要用于室内无线终端上网,具有传输速率高、系统简单、成本低等优点,但不适用于高速移动通信。5G和WiFi 6具有以下特点:

(1)5G上行峰值传输速率达10Gbit/s,下行峰值传输速率达20Gbit/s。WIFI 6在80 MHz带宽下,单条空间流的峰值速率为 600Mbit/s,在带宽为160MHz、8条空间流的情况下,峰值速率达 9.6Gbit/s。

(2)5G在eMBB场景下时延小于4ms,在uRLLC场景下时延小于1ms。WIFI 6平均时延为20ms,远高于5G的时延。因此,在时延方面,5G优于WIFI 6。

2020年不仅是5G商用年,也是WiFi6 商用的元年,5G理论速度达到了10Gbps,而WiFi5 在网速、连接设备数等都被5G完爆。5G是否会取代 WiFi? 针对这个问题大家都认为,5G网络和WiFi都各有自己的使用场景和对象,网络使用选择取决于用户,随着技术的发展,5G 和 WiFi 会相互配合,在不同场景下,发挥各自优势,满足最终用户的需求。