Wrangle Some Data at the University of Arizona!

Feb 25-26, 2017

8:30 AM - 5:00 PM

Instructors: Marnee Dearman, Upendra Devisetty, Travis Struck, Frank Ventura, test

Helpers: Gaius Augustus, Tushar Garg, Uwe Hilgert, Amit Juneja, Jennifer Lumbres, Blake Joyce, Elizabeth Miller, Julian Pistorius, Andreina Siri, Edwin Skidmore, Anandraj Thiyagarajaperumal

General Information


The workshop is taking place during the annual Rodeo Week in Tucson, AZ.

Come for the rodeo, stay to wrangle some data!


Software Carpentry aims to help researchers get their work done in less time and with less pain by teaching them basic research computing skills. This hands-on workshop will cover basic concepts and tools, including program design, version control, data management, and task automation. Participants will be encouraged to help one another and to apply what they have learned to their own research problems. For more information on what we teach and why, please see our paper "Best Practices for Scientific Computing".

Who: The course is aimed at practicing researchers - postdocs, graduate students, and other researchers. Undergraduate students can be admitted if space is available.

Prior knowledge of the tools presented at the workshop is not required.

APPLY at https://cyverse-sdc.eventbrite.com

Where: Integrated Learning Center (ILC); 1503 E. University Blvd., Tucson, AZ 85721. Get directions with OpenStreetMap or Google Maps.

Requirements: Participants must bring a laptop with a Mac, Linux, or Windows operating sytem (not a tablet, Chromebook, etc.) that they have administrative privileges on. They should have a few specific software packages installed (listed below). They are also required to abide by Software Carpentry's Code of Conduct.

Accessibility: We are committed to making this workshop accessible to everybody. The workshop organisers have checked that:

Materials will be provided in advance of the workshop and large-print handouts are available if needed by notifying the organizers in advance. If we can help making learning easier for you (e.g. sign-language interpreters, lactation facilities) please get in touch and we will attempt to provide them.

Contact: Please email hilgert@email.arizona.edu for more information.


Schedule

Surveys

Please be sure to complete these surveys before and after the workshop.

Pre-workshop Survey

Post-workshop Survey

Day 1

08:30 Automate tasks with the Unix shell and GitHub
10:30 Coffee
12:30 Lunch break
13:30 Conduct scientific analyses with Python and GitHub
15:00 Coffee
17:00 Dismissal

Day 2

08:30 Conduct scientific analyses with Python and GitHub, cont.
10:30 Coffee
12:30 Lunch break
13:30 Bring it all together to manage and analyze data
15:00 Coffee
17:00 Dismissal

We will use an Etherpad (http://pad.software-carpentry.org/2017-02-25-CyVerse) for chatting, taking notes, asking questions and sharing URLs and bits of code.


For a history of all commands typed during the Saturday morning session click Command Line History Travis or Command Line History Upendra.


Syllabus/Learning Objectives

The Unix Shell

  • Files and directories - in vs. "underneath" the GUI
  • History and tab completion
  • Pipes and redirection
  • Loop over files
  • Create and run scripts
  • Find things

Programming With Python

  • Use libraries
  • Work with arrays
  • Read and plot data
  • Create and use functions
  • Use loops and conditionals
  • Use Python from the command line
  • Defensive programming

Version Control with Git

  • Access a repository and pull files
  • Create a repository
  • Record changes: add, commit, ...
  • View changes: status, diff, ...
  • Ignore files
  • Work on the web: clone, pull, push, ...
  • Resolve conflicts

Resources

Setup

To participate in a Software Carpentry workshop, you will need access to the software described below. In addition, you will need an up-to-date web browser.

We maintain a list of common issues that occur during installation as a reference for instructors that may be useful on the Configuration Problems and Solutions wiki page.

The Bash Shell

Bash is a commonly-used shell that gives you the power to do simple tasks more quickly.

Windows

Video Tutorial
  1. Download the Git for Windows installer.
  2. Run the installer and follow the steps bellow:
    1. Click on "Next".
    2. Click on "Next".
    3. Keep "Use Git from the Windows Command Prompt" selected and click on "Next". If you forgot to do this programs that you need for the workshop will not work properly. If this happens rerun the installer and select the appropriate option.
    4. Click on "Next".
    5. Keep "Checkout Windows-style, commit Unix-style line endings" selected and click on "Next".
    6. Keep "Use Windows' default console window" selected and click on "Next".
    7. Click on "Install".
    8. Click on "Finish".
  3. If your "HOME" environment variable is not set (or you don't know what this is):
    1. Open command prompt (Open Start Menu then type cmd and press [Enter])
    2. Type the following line into the command prompt window exactly as shown:

      setx HOME "%USERPROFILE%"

    3. Press [Enter], you should see SUCCESS: Specified value was saved.
    4. Quit command prompt by typing exit then pressing [Enter]

This will provide you with both Git and Bash in the Git Bash program.

Mac OS X

The default shell in all versions of Mac OS X is Bash, so no need to install anything. You access Bash from the Terminal (found in /Applications/Utilities). See the Git installation video tutorial for an example on how to open the Terminal. You may want to keep Terminal in your dock for this workshop.

Linux

The default shell is usually Bash, but if your machine is set up differently you can run it by opening a terminal and typing bash. There is no need to install anything.

Git

Git is a version control system that lets you track who made changes to what when and has options for easily updating a shared or public version of your code on github.com. You will need a supported web browser (current versions of Chrome, Firefox or Safari, or Internet Explorer version 9 or above).

You will need an account at github.com for parts of the Git lesson. Basic GitHub accounts are free. We encourage you to create a GitHub account if you don't have one already. Please consider what personal information you'd like to reveal. For example, you may want to review these instructions for keeping your email address private provided at GitHub.

Windows

Git should be installed on your computer as part of your Bash install (described above).

Mac OS X

Video Tutorial

For OS X 10.9 and higher, install Git for Mac by downloading and running the most recent "mavericks" installer from this list. After installing Git, there will not be anything in your /Applications folder, as Git is a command line program. For older versions of OS X (10.5-10.8) use the most recent available installer labelled "snow-leopard" available here.

Linux

If Git is not already available on your machine you can try to install it via your distro's package manager. For Debian/Ubuntu run sudo apt-get install -y git and for Fedora run sudo yum install -y git.

Text Editor

When you're writing code, you want to use a text editor that is optimized for writing code, with features like automatic color-coding of key words. The default text editor on Mac OS X and Linux is usually set to Vim, which is not famous for being intuitive. if you accidentally find yourself stuck in it, try typing the escape key, followed by :q! (colon, lower-case 'q', exclamation mark), then hitting Return to return to the shell.

Windows

Video Tutorial

nano is a basic editor and the default that instructors use in the workshop. To install it, download the Software Carpentry Windows installer and double click on the file to run it. This installer requires an active internet connection.

Others editors that you can use are Notepad++ or Sublime Text. Be aware that you must add its installation directory to your system path. Please ask your instructor to help you do this.

Mac OS X

nano is a basic editor and the default that instructors use in the workshop. See the Git installation video tutorial for an example on how to open nano. It should be pre-installed.

Others editors that you can use are Text Wrangler or Sublime Text.

Linux

nano is a basic editor and the default that instructors use in the workshop. It should be pre-installed.

Others editors that you can use are Gedit, Kate or Sublime Text.

Python

Python is a popular language for research computing, and great for general-purpose programming as well. All workshop participants should newly install Pyton (currently version 3.6), regardless of whether they already have Python or not, using the all-in-one installer Anaconda.

We will teach Python using the Jupyter notebook, a programming environment that runs in a web browser and is being inlcuded in the Anaconda installation. For this to work you will need a reasonably up-to-date browser. The current versions of the Chrome, Safari and Firefox browsers are all supported (some older browsers, including Internet Explorer version 9 and below, are not).

Windows

Video Tutorial
  1. Open http://continuum.io/downloads with your web browser.
  2. Download the most recent Python 3 installer for Windows. (Currently version 3.6.)
  3. Install Python 3 using all of the defaults for installation except make sure to check Make Anaconda the default Python.

Mac OS X

Video Tutorial
  1. Open http://continuum.io/downloads with your web browser.
  2. Download the Python 3 installer for OS X. (Currently version 3.6.)
  3. Install Python 3 using all of the defaults for installation.

Linux

  1. Open http://continuum.io/downloads with your web browser.
  2. Download the Python 3 installer for Linux. (Currently version 3.6.)
  3. Install Python 3 using all of the defaults for installation. (Installation requires using the shell. If you aren't comfortable doing the installation yourself stop here and request help at the workshop.)
  4. Open a terminal window.
  5. Type
    bash Anaconda3-
    and then press tab. The name of the file you just downloaded should appear.
  6. Press enter. You will follow the text-only prompts. When there is a colon at the bottom of the screen press the down arrow to move down through the text. Type yes and press enter to approve the license. Press enter to approve the default location for the files. Type yes and press enter to prepend Anaconda to your PATH (this makes the Anaconda distribution the default Python).