9.38.2 Greatest hits from previous weeks

9.38.2.1 Entering numbers in Scientific Notation?
9.38.2.2 Plot data from txt file?
9.38.2.3 QR Code in shopping cart handle
9.38.2.4 Where is Abbott? How to make logograms from the film "Arrival"?
9.38.2.5 Why round to even integers?
9.38.2.6 How do I clear all user defined symbols?
9.38.2.7 How to create effect like Van Gogh's stroke brush?
9.38.2.1 Entering numbers in Scientific Notation?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=36792

I need to play with a lot of powers such as  10^-3 .  1E-3  does not work for it. Is there any short form for it? 
[number-representation]
 
asked by hhh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2000 Score of 81
answered by Joe https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=44710 Score of 2
9.38.2.2 Plot data from txt file?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=5910

I have data in file.txt which can be expressed by 20000x11 matrix. I do not want to import all of these data. How can I plot graph of the column 1 & column 4? 
[plotting] [import]
 
asked by Gokce https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1297 Score of 21
answered by user1066 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=106 Score of 24
9.38.2.3 QR Code in shopping cart handle

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=26268

This week, the market people from my work wanted to put QR codes in shopping cart handles, but when they tested it, the QR code did not work. I noted that the cylindrical curvature (even small) ... 
[image-processing]
 
asked by Murta https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2266 Score of 202
answered by halirutan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=187 Score of 197
9.38.2.4 Where is Abbott? How to make logograms from the film "Arrival"?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=137156

The film Arrival showed Wolfram Language code in action analysing alien logograms. A recent 
blog describes some details and 
mentions 
a live-coding video by Christopher Wolfam. See also Stephen Wolfram'... 
[graphics] [generative-art]
 
asked by KennyColnago https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=3246 Score of 20
9.38.2.5 Why round to even integers?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=2116

According to the Mathematica help: 
Round rounds numbers of the form x.5 toward the nearest even integer. 
For example: 
 
 Round[{0.5, 1.5, 2.5, 3.5, 4.5}] 
 
 
gives 
... 
[numerics] [language-design]
 
asked by wxffles https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=427 Score of 88
answered by Per Alexandersson https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=488 Score of 54
9.38.2.6 How do I clear all user defined symbols?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=850

Is there some way to do this other than going to  Evaluation -> Quit kernel  and firing a new one up? 
[variable-definitions] [symbols] [faq] [clear] [persistence]
 
asked by niklasfi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=82 Score of 110
answered by Artes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=184 Score of 114
9.38.2.7 How to create effect like Van Gogh's stroke brush?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=39003

I need to apply Van Gogh's stroke brush effect to a random image 
Take the following image as an example: 
 
Thank you so much if you could help! 
[image-processing] [code-request] [generative-art]
 
asked by user10495 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=10495 Score of 34
answered by Simon Woods https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=862 Score of 53