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Overview of Processing

From: Interactive Data Visualization with Processing

Video: Overview of Processing

In this movie I'll introduce you to Processing and outline some of its key features. The first thing you see when you open Processing is the Processing Development Environment or PDE. In most other programming applications this is known as the IDE or Integrated Development Environment. And what you have here at the very top is the Files Edit Sketch menus. Beneath that you have the Processing toolbar with a play and stop button as well as a button to get a new sketch, to Open, Save or Export an application.

Overview of Processing

In this movie I'll introduce you to Processing and outline some of its key features. The first thing you see when you open Processing is the Processing Development Environment or PDE. In most other programming applications this is known as the IDE or Integrated Development Environment. And what you have here at the very top is the Files Edit Sketch menus. Beneath that you have the Processing toolbar with a play and stop button as well as a button to get a new sketch, to Open, Save or Export an application.

Beneath that is a tab with the name of the file. Right now it just simply says sketch and it gives the date and the little section sign at the end means that there are unsaved changes. When you begin to have sketches that use, for instance, objects created in various classes, you might have additional tabs. But, many simple sketches don't have any extra tabs at all. Beneath that the large white area is the Text Editor, where you type in your code. The next section down is the message area, where Processing will let you know, for instance, that it has imported a file or let you know that there are error messages.

The black area beneath that is the console, where it will print out a text of an error message or if you ask it to print out some text as part of your sketch, that's where it will appear. Now, whenever you run a sketch in Processing, you'll also get a display window. I'll do a very quick one. All I'm doing here is setting the size of the display window and I've put size 600 pixels wide, 200 pixels tall, finish with a semicolon(;). If I hit Run, there's my display window.

Right now it's got nothing in it, except a gray background. But, you see that it has the same name as a sketch that I just ran. Even if you run a sketch that has no graphics, you'll always have a display window pop up. If you're doing a graphics-free one you can simply ignore it. Now, if you're accustomed to using an external code editor like Textmate or a Notepad ++, you can also arrange to do that in Processing, by simply changing the Preferences. I'll close this sketch window. And I'll go to the Preferences by clicking Ctrl+, on a PC or Cmd+, on a Mac, and what you see here is first; the Processing sketchbook location, set that wherever you want, that's where your sketch is as well as any imported libraries will need to go.

You can change the Editor font size. You have the option of selecting Use smooth text in the editor window, I did that. You can Increase the maximum available memory. I bumped it up to a 1 GB of memory. And then you see it a few steps where you can use an External editor if you want. I, on the other hand, prefer to use the Processing Editor because it does color coding and because it gives better information on error messages. I'll close this now. Now, one of the neat things about Processing is that it comes with a really wide selection of sample sketches.

All you need to do is go up to File and down to Examples and then you can click open the examples that you have in here. For instance, I have Lights, Directional Lights which will be a 3D sketch and I can click Run and then by moving my mouse I can control the direction of the light in this 3D drawing. I can close that.

I can close that sketch and I can open up another one for instance, Typography. And this loads the fonts that are available. I can also close the sketch by hitting Ctrl+W. When you add external libraries or collections of code, they will also bring in their own sample sketches in the same folder as the other ones that we just saw.

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This video is part of

Image for Interactive Data Visualization with Processing
Interactive Data Visualization with Processing

72 video lessons · 13663 viewers

Barton Poulson
Author

 
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  1. 3m 16s
    1. Welcome
      58s
    2. What you should know
      1m 22s
    3. Using the exercise files
      56s
  2. 11m 51s
    1. Overview of data visualization
      11m 51s
  3. 11m 53s
    1. Installing Processing
      3m 38s
    2. Overview of Processing
      4m 5s
    3. Exploring libraries
      4m 10s
  4. 1h 1m
    1. Basic setup
      7m 31s
    2. Drawing points
      4m 37s
    3. Drawing lines
      5m 6s
    4. Drawing ellipses and circles
      5m 24s
    5. Drawing arcs
      6m 54s
    6. Drawing rectangles and squares
      4m 58s
    7. Drawing quadrangles
      3m 25s
    8. Drawing triangles
      2m 55s
    9. Drawing polygons
      3m 37s
    10. Drawing simple curves
      4m 54s
    11. Drawing complex curves
      6m 46s
    12. Drawing Bézier curves
      5m 38s
  5. 54m 3s
    1. Introduction to variables
      10m 44s
    2. Understanding variable scope
      6m 53s
    3. Modifying variables
      9m 8s
    4. Creating arrays
      9m 53s
    5. Modifying arrays
      6m 37s
    6. Creating strings
      7m 3s
    7. Modifying strings
      3m 45s
  6. 1h 2m
    1. Incorporating randomness
      7m 59s
    2. Using Perlin noise
      4m 24s
    3. Shuffling with Java
      3m 30s
    4. Specifying line attributes
      8m 2s
    5. Changing placement modes
      5m 45s
    6. Understanding color attributes and functions
      4m 16s
    7. Exploring color spaces
      7m 44s
    8. Using color palettes
      7m 5s
    9. Transforming the grid
      8m 38s
    10. Exploring the attribute matrix
      5m 33s
  7. 52m 7s
    1. Building code blocks
      5m 57s
    2. Writing a while loop
      3m 52s
    3. Using for loops
      5m 35s
    4. Creating conditionals
      14m 50s
    5. Working with easing
      10m 51s
    6. Creating spirals
      11m 2s
  8. 18m 55s
    1. Mouse tracking
      3m 54s
    2. Hovering and clicking
      11m 16s
    3. Understanding keyboard interaction
      3m 45s
  9. 27m 32s
    1. Specifying fonts
      6m 43s
    2. Using images
      5m 51s
    3. Playing a video loop
      6m 20s
    4. Exporting video
      3m 47s
    5. Adding sound
      4m 51s
  10. 20m 49s
    1. Creating functions
      11m 48s
    2. Creating classes and objects
      9m 1s
  11. 31m 10s
    1. Using embedded data
      5m 26s
    2. Working with appended text data
      6m 4s
    3. Working with appended tabular data
      10m 26s
    4. Reading XML data
      9m 14s
  12. 48m 17s
    1. Generating dot plots
      11m 11s
    2. Building scatter plots
      10m 0s
    3. Making line plots
      9m 55s
    4. Creating bar charts
      9m 12s
    5. Checking out examples of maps, hierarchies, and networks
      7m 59s
  13. 20m 57s
    1. Introducing some principles of 2D design
      13m 44s
    2. Understanding color theory
      7m 13s
  14. 24m 46s
    1. Interacting with zooming, rotating, and sliding
      6m 26s
    2. Implementing slicing
      6m 47s
    3. Using rollovers
      5m 58s
    4. Introducing the GUI libraries
      5m 35s
  15. 10m 35s
    1. Sharing via OpenProcessing and other sites
      3m 19s
    2. Saving as a desktop application
      2m 42s
    3. Saving as JavaScript
      1m 47s
    4. Saving as an Android application
      2m 47s
  16. 2m 38s
    1. Where to go from here
      2m 38s

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