1.准备用于gif动图的图片

https://graphics.reuters.com/OLYMPICS-2020/EXPLAINER/gjnvwnlwgpw/index.html#section-medals

 explainer2

archery

 handball

sailing

 

shooting


2.在线制作gif动图

2.1 访问网址https://gif.imageonline.co/

gif01

 

 

 2.2上传准备好的图片

保证同一个尺寸,例如本例都是600*600

gif02

 

 

 

2.3修改gif参数

  • 图片切换的时间间隔
  • 添加文字
  • 修改gif图片尺寸

gif02

 

 

 

 

2.4预览gif图效果

  • 如果满意,就下载gif图
  • 如果不满意,返回2.3进一步调整参数

gif04

 

 

 

 

2.5最终结果

olympics2020reuters

 

 

 

 

A4 paper size in different values.

A4 size in different values. The links below give you an overview. You will find the exact numbers for Micrometres (μm), Millimetres (mm), Centimetres (cm), Metres (m), Thou (th), Inches (in), Feet (ft), Yards (yd), Pixels, Pica, Point and HPGL. Click on the link to go to the appropriate size. You can calculate your A paper size in another unit with our calculator.

History ISO 216: ISO 216 the international standard.

The ISO 216 is used worldwide, except in North America and parts of Latin America. The standard includes the “A”, “B” and “C” series of paper sizes. The A4 size is the most widely used worldwide. The sizes A2, A3, B3, B4 and B5 were developed in France by the mathematician Lazare Carnot. These standards were published during the French Revolution in 1798.

At the beginning of the 20th century, Dr. Walter Porstmann changed Lichtenberg’s idea into a good system of different paper sizes. In 1922 Porstmann introduced his system. The DIN became the standard (DIN 476) in Germany. Porstmann’s standard replaced some other paper systems. The DIN system is used in Germany and Austria.

 

 

 

python很火,但是跟python类似的软件很多,例如RJulia等,参见编程语言的历史

就数据科学而言(data science),统计出身的数据科学家偏爱R一点,程序设计出身的数据科学家偏爱python一点;其实多数数据科学家是pythonR并用的——发挥各自的优势;很多数据科学还同时使用tableau、Excel、google spreadsheet。

python是通用的编程语言,是开源软件(open source)。简言之python类似安卓系统或苹果iso系统,python的活力在于有很多拓展功能包或功能库(library),类似手机操作系统上的app。所以从这个意义上讲,重点不是python,而是要做哪个方向的研究,选择响应的功能库(library)。例如常见的数据分析库是pandasnumpy,常见的数据可视化用matplotlib,常见的网页数据抓取是BeautifulSoupscapy

python的书非常多,通用的、针对特定的领域的,都是如此。

建议通过http://libgen.rs/免费下载英文电子书。

 

我推荐3本通用性强、有中译本的书(估计不同人的推荐会非常不同)

 

1.Automate the Boring Stuff with Python

1.1英文版

Sweigart, A. (2020). Automate the Boring Stuff with Python: Practical Programming for Total Beginners (2nd). No Starch Press.

http://libgen.rs/book/index.php?md5=BFE1E2B65DA651477404660AE468D148

https://automatetheboringstuff.com/

https://www.amazon.cn/dp/B07VSXS4NK/

https://www.amazon.com/-/zh/dp/1593279922

 automate-the-boring-stuff

cover automate python en

 

1.2中文翻译版(原书第1版)

Sweigart, A.(2016). Python编程快速上手——让繁琐工作自动化 编程快速上手——让繁琐工作自动化 (1st ). 人民邮电出版社. https://www.amazon.cn/dp/B01M68PABD

http://libgen.rs/book/index.php?md5=5EA4E155C46104B393AFF7366772476C

cover automate python cn

 

1.3原书第2版对应视频文件

https://www.udemy.com/course/automate/

automate udemy course logo

 

 

2.learn python in hard way

Shaw, Z. (2018). Learn More Python 3 the Hard Way: The Next Step for New Python Programmers. Addison-Wesley. http://libgen.rs/book/index.php?md5=5C39D11E8BDEE52F84E0F4A55B55F30D

learn python hardway en

Shaw, Z. (2018). “笨办法”学Python 3笨办法”学Python 3 (2nd). 人民邮电出版社有限公司. https://www.amazon.cn/dp/B07Y525WFQ

learn python hardway cn

 

3.python for data analysis

McKinney, W. (2017). Python for Data Analysis: Data Wrangling with Pandas, Numpy, and Ipython (2nd). O’Reilly Media, Inc. http://libgen.rs/book/index.php?md5=518B01712FF35354C5CF30B4913900FB

python data analysis en

McKinney, W. (2018). 利用Python进行数据分析 (2nd). 机械工业出版社. https://www.amazon.cn/dp/B07FW12FVC/

python data analysis cn

 

Tzachor, A., Richards, C. E., & Holt, L. (2021). Future foods for risk-resilient diets. Nature Food, 2(5), 326–329. https://doi.org/10.1038/s43016-021-00269-x
 
nature food2021May
 

 

Future foods for risk-resilient diets

Abstract

Future foods, such as microalgae, mycoprotein and mealworm, have been suggested as nutritious and sustainable dietary options. Here we consider one of the most profound, yet neglected, benefits of future foods farming systems—their potential to provide essential nutrition in the face of systemic disturbances—and discuss major barriers to realizing this prospect.

 

https://www.nature.com/articles/s43016-021-00269-x/figures/1

Current risk landscape of ASF PSF and future foods farming systems
Lazarus, J. V., Ratzan, S. C., Palayew, A., Gostin, L. O., Larson, H. J., Rabin, K., Kimball, S., & El-Mohandes, A. (2021). A Global Survey of Potential Acceptance of a Covid-19 Vaccine. Nature Medicine, 27(2), 225–228. https://doi.org/10.1038/s41591-020-1124-9
nature article01
 
nature article01b
 

nature article02
 

 
nature article03
 
osf logo
 
nature article04
 
R markdown file
 
 
 
data set