https://jsvine.github.io/intro-to-visidata/index.html

An Introduction to VisiData
[                    ] 
  * About This Tutorial

The Big Picture

  * What Is VisiData?
  * Installation
  * VisiData In 60 Seconds

Basic Usage

  * Getting Out of Trouble
  * Opening Files
  * Navigating VisiData
  * Understanding Sheets
  * Understanding Rows
  * Understanding Columns
  * Sorting and Filtering
  * Summarizing Data
  * Working With Excel Spreadsheets
  * Saving Sheets

Intermediate Usage

  * Creating New Columns
  * Joining Sheets
  * Reshaping Data
  * Working With Large Cells
  * Working With Large Files

Advanced Usage

  * Configuring VisiData
  * Extending VisiData With Plugins
  * Debugging VisiData
  * The Command Log

Practical Examples

  * High-Flying Birds
  * Distinctive Birds

An Introduction to VisiData

  * Docs >>
  * An Introduction to VisiData
  * 

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An Introduction to VisiDataP

VisiData is a free, open-source tool that lets you quickly open,
explore, summarize, and analyze datasets in your computer's terminal.
VisiData works with CSV files, Excel spreadsheets, SQL databases, and
many other data sources. The interface looks like this:

  File  Edit  View  Column  Row  Data  Plot  System  Help               Ctrl+H for help menu       
 OPERATOR           ||count#| percent%| histogram                                         ~|
 UNKNOWN            | 23076 |   31.42 | ************************************************** |
 SOUTHWEST AIRLINES |  7752 |   10.55 | ****************                                   |
 BUSINESS           |  5868 |    7.99 | ************                                       |
 AMERICAN AIRLINES  |  4337 |    5.90 | *********                                          |
 DELTA AIR LINES    |  2817 |    3.84 | ******                                             |
 FEDEX EXPRESS      |  2709 |    3.69 | *****                                              |
 UNITED AIRLINES    |  2194 |    2.99 | ****                                               |
 US AIRWAYS         |  1885 |    2.57 | ****                                               |
 UPS AIRLINES       |  1773 |    2.41 | ***                                                |
 SKYWEST AIRLINES   |  1769 |    2.41 | ***                                                |
 JETBLUE AIRWAYS    |  1740 |    2.37 | ***                                                |
 EXPRESSJET AIRLINES|  1347 |    1.83 | **                                                 |
 AMERICAN EAGLE AIR...|  1041 |    1.42 | **                                                 |
 ENVOY AIR          |   883 |    1.20 | *                                                  |
 ALASKA AIRLINES    |   835 |    1.14 | *                                                  |
 REPUBLIC AIRLINES  |   804 |    1.09 | *                                                  |
 MESA AIRLINES      |   693 |    0.94 | *                                                  |
 AIR WISCONSIN AIRL...|   623 |    0.85 | *                                                  |
 PSA AIRLINES       |   577 |    0.79 | *                                                  |
 PRIVATELY OWNED    |   516 |    0.70 | *                                                  |
 PHI INC            |   491 |    0.67 | *                                                  |
2> faa-wildlife-strikes_OPERATOR_freq|                                 Shift+F         282 bins  *0 

Very quickly, VisiData has become the tool I reach for first when I
encounter a new dataset. I think you might enjoy it, too.

About This TutorialP

Note

This tutorial is not officially affiliated with VisiData, and is not
intended as a comprehensive reference. You can learn more about
VisiData from these official sources:

  * VisiData.org
  * VisiData's GitHub repository
  * Saul Pwanson's Patreon page
  * Saul Pwanson's case studies on YouTube

Tutorial StructureP

This tutorial is divided into five sections:

+-------------------------------------------------------------------+
|    Section     |          Description          |      Status      |
|----------------+-------------------------------+------------------|
|The Big Picture |If you read nothing else ...     |Draft complete    |
|----------------+-------------------------------+------------------|
|Basic Usage     |All you need to know to get    |Draft complete    |
|                |started                        |                  |
|----------------+-------------------------------+------------------|
|Intermediate    |Some of the handiest           |Draft complete    |
|Usage           |power-features                 |                  |
|----------------+-------------------------------+------------------|
|Advanced Usage  |How to bend VisiData to your   |Two chapters      |
|                |whims                          |drafted           |
|----------------+-------------------------------+------------------|
|Practical       |Step-by-step walkthroughs      |Two examples      |
|Examples        |                               |drafted           |
+-------------------------------------------------------------------+

To be notified of new material and/or major updates, sign up here.

Tutorial StatusP

+--------------------------------+
|Tutorial last updated|2021-09-22|
|---------------------+----------|
|VisiData version     |2.6       |
+--------------------------------+

About the authorP

Jeremy Singer-Vine is the data editor at BuzzFeed News. He also
publishes Data Is Plural, a weekly newsletter of useful/curious
datasets.

Feedback / questions / corrections?P

File an issue on GitHub or email the author at jsvine@gmail.com.

AcknowledgmentsP

Many thanks to the following people for their feedback, suggestions,
and fixes: Saul Pwanson, Anja Kefala, John Templon, Scott Pham,
Andrea Borruso, Felix Rosencrantz.

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(c) Copyright 2018-2020, Jeremy Singer-Vine

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