Difference between revisions of "Data Analysis"

From TeleCafeWiki
Jump to navigation Jump to search
(→‎Data Scrape: Web scraping with R and rvest (includes video & code))
(→‎RegEx Tutorials: Learn Regex The Hard Way)
Line 53: Line 53:
 
* [http://www.rexegg.com/regex-uses.html The Many Uses of Regex]
 
* [http://www.rexegg.com/regex-uses.html The Many Uses of Regex]
 
: Regex is the gift that keeps giving. Once you learn it, you discover it comes in handy in many places where you hadn't planned to use it.
 
: Regex is the gift that keeps giving. Once you learn it, you discover it comes in handy in many places where you hadn't planned to use it.
 +
 +
* [http://regex.learncodethehardway.org/book/ Learn Regex The Hard Way]
 +
: This is an in-progress book that quickly teaches you regular expressions.
  
 
=== RegEx Tools ===
 
=== RegEx Tools ===

Revision as of 13:29, 6 November 2015

Business Intelligence

A section from the Creative Commons book Getting the Most Out of Information Systems: A Manager's Guide.

Data Analysis Tools

D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG and CSS. D3’s emphasis on web standards gives you the full capabilities of modern browsers without tying yourself to a proprietary framework, combining powerful visualization components and a data-driven approach to DOM manipulation.
Take control of your R code. RStudio is the premier integrated development environment for R. It is available in open source and commercial editions and runs on the desktop (Windows, Mac, and Linux) or over the web with RStudio Server. Download RStudio (for Windows, Mac, or Linux).
Open Refine is a standalone open source desktop application for data cleanup and transformation to other formats, the activity known as data wrangling. It is similar to spreadsheet applications (and can work with spreadsheet file formats), however, it behaves more like a database.
Wrangler allows interactive transformation of messy, real-world data into the data tables analysis tools expect. Export data for use in Excel, R, Tableau, Protovis, ...
HTSQL is designed for data analysts and other accidental programmers who have complex business inquiries to solve and need a productive tool to write and share database queries. HTSQL is free and open source software.
Jigsaw is a visual analytics system to help analysts and researchers better explore, analyze, and make sense of such document collections.

Learn Data Science

Also See: Computer Productivity Hacks#Educate_Yourself

“ Academic credentials are important but not necessary for high-quality data science. The core aptitudes – curiosity, intellectual agility, statistical fluency, research stamina, scientific rigor, skeptical nature – that distinguish the best data scientists are widely distributed throughout the population.

We’re likely to see more uncredentialed, inexperienced individuals try their hands at data science, bootstrapping their skills on the open-source ecosystem and using the diversity of modeling tools available. Just as data-science platforms and tools are proliferating through the magic of open source, big data’s data-scientist pool will as well.

And there’s yet another trend that will alleviate any talent gap: the democratization of data science. Autodidacts – the self-taught, uncredentialed, data-passionate people – will come to play a significant role in many organizations’ data science initiatives. 		”
 
Start analyzing real data today, for free. Join 50,000 other learners from around the world.
The open-source curriculum for learning Data Science. Foundational in both theory and technologies, the OSDSM breaks down the core competencies necessary to make data useful.
The Internet is Your Oyster: With Coursera, ebooks, Stack Overflow, and GitHub -- all free and open -- how can you afford not to take advantage of an open source education?
Numerous "flash card"-style data science lessons.

Regular Expressions

In theoretical computer science and formal language theory, a regular expression (abbreviated regex or regexp and sometimes called a rational expression) is a sequence of characters that forms a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations.

RegEx Tutorials

Includes:
- Interactive Tutorial › Learn to use Regular Expressions
- Practical Examples › Practice your Regular Expressions
- RegEx Cheatsheet › Regular Expressions in PHP & More
Any non-trivial regex looks daunting to anybody not familiar with them. But with just a bit of experience, you will soon be able to craft your own regular expressions like you have never done anything else.
Regex is the gift that keeps giving. Once you learn it, you discover it comes in handy in many places where you hadn't planned to use it.
This is an in-progress book that quickly teaches you regular expressions.

RegEx Tools

Regex101 allows you to create, debug, test and have your expressions explained for PHP, PCRE, JavaScript and Python. The website also features a community where you can share useful expressions.
Regular expression tester with syntax highlighting, contextual help, video tutorial, reference, and searchable community patterns.
Pythex is a real-time regular expression editor for Python, a quick way to test your regular expressions.
JavaScript regex tester. Highlights matches on the fly.

Text Extraction

PDF Conversion

pdftotext.org is the best online service for easily extracting text from your PDF files. Conversion from PDF to TXT is really fast thanks to our in-browser conversion architecture. Your PDF files are never uploaded to the Internet, so even private PDF files are safe to convert with this service. The conversion is done locally in your browser – you can even convert when you are offline! There is no need for any registration or sign-up, and the service will always be free to use.

Convert PDF to HTML without losing text or format.
Lists several options.
Capture2Text enables users to do the following:
  1. Optical Character Recognition (OCR)
  2. Speech Recognition
Extracts plain text from documents in all popular formats.
Detexter is an app designed to extract text from PDF files.

Data Scrape

Tools and tips compiled by journalists from PBS and Omaha World-Herald.
Watch (video) how easy it is to import data from a Web page into R.
Scrapinghub's list of open source scraping projects.
Monitor website links with ease. Sitestalker supervises websites and notifies you when your desired content hits the web.Stop wasting your time constantly refreshing websites.
Sitestalker is great for:
Finding jobs
Searching for an apartment
Getting the best bargains
Clipping
Tools for gathering data from public sources.

Text Search

Makes tools to search text content, including:
  1. FALCON - Text Search Java Project: JSON based text search Java Project
  2. HAWK - PDF Text Search Java Project: Taking initiative for Document Text Search
Xpdf is an open source viewer for Portable Document Format (PDF) files.
Windows installer: Short Programs/Scripts (Look for the xpdf3.exe / poppler.exe links in left sidebar.)

Text Transformation

Do you have a list of text strings that you want to modify the format on? Copy and paste the list into the a box, then provide an example of how you want each text string formatted. The hope is that Transformy will do the rest.

See Also

References

Retrieved from "https://www.telecafe.org/smw/index.php?title=Data_Analysis&oldid=764"