Held: Thursday, 30 January 2014

Back to Outline 01 - Version Control with Git. On to Outline 03 - Processing (1).

Summary

We consider some basics of a simple Racket library I've written for playing with the (Problem Solving + Abstract Images + Functions) (ImageMath?) model.

Related Pages

• Reading (sketch) An Intro to PsAiF/R
• Lab: An Intro to PsAiF/R
• Assignment 2: PsAiF/R
• EBoard (Source) (HTML) (PDF)

Overview

• Project overview.
• Primary Scheme procedures.
• Building image functions.

Administrivia

• Yes, there were some interesting Git issues. And we'll learn a bit from looking at them.
• I'd encourage you to attend Friday's CS table.
• Given how my semester has started, it seems unlikely that I'll be able to get readings done for very many classes.
  • But I will try to set up some appropriate lab experiences.
• First- and Second-year students: The TC Corps is recruiting! Ask one of the TCCs (Christine, Hannah, Tyler, and Sydney, I think).
• Assignments:
  • Assignment 3: PsAIF/R
  • Read something on the Web about Processing.

Overview

• PsAiF/R (or just psaifr) is my quickly cobbled-together system for exploring the model I have for joining Problem Solving, Abstract Images, and Functions. The "/R" is because it's in Racket.
• It was really a quick hack, so the interface is a bit inconsistent.
• We typically use lists (or single symbols) to describe the functions.

Main Procedures

• (psaifr-greyscale-image FUNCTION WIDTH HEIGHT BORDER)
• (makefun SEXP)
• (psaifr-greyscale-illustration SEXP SIZE FONTSIZE)

Building functions

• Zeroary: -1, 0, 1, x, y, ...
• Unary: -, abs, sign, sine, cosine, anything else that makes sense
• Binary: , add (not +), wrap, *anything else that makes sense

Lab

• Do the lab on PsAiF/R.
• Be prepared to discuss and/or reflect.