ricounet67/tips

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John Minter's Helpful Tips

J. R. Minter

Started: 2013-07-16, Last modified: 2020-08-05

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This repository contains the John Minter's useful tips in Rmarkdown format.

USB drives

Note to self: Only buy USB-3.1 thumb drives, They are a lot faster than USB 3.0...

see Amazon for a nice drive...
Fix for annoying git message:
```
git config --global pull.rebase false
```
Quotes I Like

Plod. don't sprint. Be fruitful like a tree, not efficient like a machine. Use the gifts God has given you. - Douglas Wilson

The greatest value of a picture is when it forces us to notice what we never expected to see. - J.Tukey

All models are wrong, but some are useful. - G. Box

Make everything as simple as possible but not simpler. - A. Einstein
Your closest collaborator is you, six months from now. You do not respond to email.
- Karl Browman
From DataArtisan:

Skills that make you stand out in #DataScience

Being good at
- making presentations
- public speaking
- explaining complex concepts
- listening
- changing plans on short notice
- receiving feedback

First, some quickies:

Checking Author/date properties in a PDF

**Q: How do I find out when a PDF doc was originally created there is nothing under File/Properties? **

Answer by RahulTyagi (Adobe Employee)

Generally, it is shown under the document properties window in Acrobat (As shown in the following snapshot).

However, if the sender/Author has removed metadata from the pdf then there are chances that original file creation date is not displayed.

Key greek and other characters

Φ(ρ𝑧)
𝑧  script z

Happily, Rmarkdown handles these well in html documents. Haven't been able to use them in LaTeX. Need to try XeLaTeX...

UC LC Name
-- -- ----
Α	 α	Alpha	
Β	 β	Beta
Γ	 γ	Gamma
Δ	 δ	Delta
Ε	 ε	Epsilon
Ζ	 ζ	Zeta
Η	 η	Eta
Θ	 θ	Theta
Ι	 ι	Iota
Κ	 κ	Kappa
Λ	 λ	Lambda
Μ	 μ	Mu
Ν	 ν	Nu
Ξ	 ξ	Xi
Ο	 ο	Omicron
Π	 π	Pi
Ρ	 ρ	Rho
Σ	 σ,ς  Sigma
Τ	 τ	Tau
Υ	 υ  Upsilon	
Φ	 φ	Phi
Χ	 χ	Chi
Ψ	 ψ	Psi
Ω	 ω	Omega

Today I learned (TIL)

2020-05-25:
It appears that now I need to run RStudio as an administrator on Windows 10 to install packages.

Two ways to do it:
- Right click on a Desktop RStudio icon and choose Run as Administrator
- Right click on the tool-bar RStudio Icon, pull up, and choose Run as Administrator.
This really annoying since my profile is an administrator...

2020-05-14:
Do not update your iPhone OS right before a run. The update appeared to be done, but my music was skipping for about 20 min. Guess there was processing in the background.

2020-05-18:
Update Microsoft Office
- Open an Office application, such as Word, Excel, or PowerPoint. ...
- Click on Account or Office Account on the list.
- Under Product Information, click on Update Options next to Office Updates.
- From the list of options, click on Update Now.
Chrome Bookmarks - How to move a folder...

From here.

Under Bookmarks, open Bookmark Manager. If you want to move FOLDERS that are within another folder (parent folder) you need to select the parent folder in the left window. Then you click on the NAME of the folder you want to move in the right side window. DO NOT click on the little 'folder' icon-- it will not work.

Keyboard shortcut for the dplyr pipe operator

Win: `%>%` - Ctl + Shift + M    
Mac: `%>%` - CMD + Shift + M

Fix a recurring guthub credential problem - run:

Sys.unsetenv("GITHUB_PAT")
Sys.getenv("GITHUB_PAT")

The R janitor package is your friend. It cleans up non-standard column names .
CDC Corona Virus Recommendations

The CDC recommends washing with soap and water for at least 20 seconds after using the bathroom, before eating and after blowing your nose or sneezing. It also advises not to touch your eyes, nose and mouth and to clean objects and surfaces you touch often.

“These are all things you can do to prevent the spread of pretty much any respiratory virus,” Brewer said.
Closed captions in CBS All access

Go to www.cbs.com. Find a full episode of a series that you're interested in and click on it. To turn the captions on, bring your cursor into the middle of the video to see the menu show up. Look for and click on the plus sign for "More" on the lower right hand side, click again on "CC captions" just once.
The Feynman technique of learning:
- Step 1: Pick and study a topic
- Step 2: Explain the topic to someone, like a child, who is unfamiliar with the topic
- Step 3: Identify any gaps in your understanding
- Step 4: Review and Simplify!
More here...
Install command line tools on MacOS

xcode-select --install
Reset a Fitbit Ionic watch

Press and hold the left and bottom right buttons at the same time until you see the Fitbit logo. Let go of the buttons, and your tracker will restart.
Regex for youtube time stamps. Useful in SublimeText3!

\d\d:\d\d
Symbolic links. I always get this backwards...
```
file     link
ln -s source destination
```
Fun snippets
Your closest colaborator is you, six months from now
... and you don't respond to email
- Karl Broman
DRY (do not repeat yourself) vs WET (waste everyones time) coding styles
- Peter Baker (UseR 2018)
Getting started with data science
- A very helpful article from Datacamp.
Clear the Chrome Cache
- Press "CTRL" + "Shift" + "Delete" keys in Windows or Linux
- Press "Command" + "Shift" + "Delete"" keys on MacOS.
Delete Specific Cookies in Chrome for Mac OS X

From osxdaily.com You can remove a specific website cookie from Chrome by doing the following This skips several steps from original article!
- Open chrome://settings/siteData as a URL
- Scroll to look at the list or use the Search box if you want to quickly find a specific site URL.
- To remove the cookie(s), then select the site and click the trash can icon to delete cookies for the site.
- Rinse and repeat for other sites...
- Avoid cookie placement and cache generation in the first place by using the Chrome Incognito Mode private browsing feature.
Automatically download all files in a directory

Let's also exclude all the index.html files...
```
wget -r --no-parent --reject "index.html*" http://my/url
```
How to block someone on Facebook
- Click at the top right of Facebook and choose Settings.
- Click Blocking in the left side menu.
- In the Block users setting, enter the name of the person you want to block and click Block.
- Select the specific person you want to block ans click Block > Block [name]
Convert .mkv to .mp4 from the command line
```
ffmpeg -i vid.mkv -c copy vid.mp4
```
HTML Syntax

A link
```
<a href="https://...">Label</a>
```
A paragraph
```
<p>A paragraph</p>
```
A quote
```
<q>A quote</q>
```

A blockquote

<blockquote cite="https://www.w3schools.com/tags/tag_blockquote.asp">
<p>A long paragraph of text.</p>
    
<p>A second long paragraph of text.</p>
    
</blockquote>

Topics

Carbon Film Thickness