Assignment 2 - Graphing Tool

Note: There is a discussion page set up for this at http://pbl.cc.gatech.edu/cs2390/1557.html

Programming Assignment #2: A Graphing Tool

I want a reusable tool that takes an array of values (or two) and returns a Form of a graph of the set of values. Support both LineGraphs and BarGraphs. Display them, but also return them for use later. By default, include labels on the axes for values and for positions in the list. Assume that values will be between 0 and 1000, and that there may be as many as 50 values. Graphs should not be larger than 350 by 350 points.

Support all of the following:

MyGraphTool type: 'line' on: #(12 13 45).
"Display a line graph with these three values"


MyGraphTool type: 'bar' on: #(12 13 45). 
"Display a bar graph with these three values"


MyGraphTool type: 'line' on: #(12 13 45) and: #(2 10 45 20).
"Display a line graph with both sets of values"

MyGraphTool type: 'bar' on: #(1 2 3) and: #(4 5 6). 
"BarGraph's with two sets of values will always have the same number of 
elements in each set."


|f |
f := MyGraphTool type: 'bar' formOn: #(12 13 45).  
"Return a Form with the BarGraph" 
f display. 
"Display the Form"

MyGraphTool type: 'bar' on: #(12 13 45) with: #('City1' 'City2' 'City3'). 
"Label the bar graph with these names on the horizontal axis"

MyGraphTool type 'line' on: #(12 13 45) with: #('City1' 'City2' 'City3'). 
"Label the line graph with these names on the horizontal axis"

MyGraphTool type 'line' on: #(12 13 45) color: #('red' 'blue' 'yellow'). 
"Show this line graph with the data in the specified colors"

Scenarios

• How do you handle huge spreads in data, say #(1 2 900 975)?
• How do you handle large numbers of data points?
• How do you handle two different data sets (using and:)?
  Visually, how do you differentiate them?
• How do you decide where to put the labels?

Extra Credit
If you do any of these, clearly document how the user accesses these features!

• 7 points extra credit for providing an interface for entering in values and generating a graph of user's choice.
• 5 points extra credit for providing an option to (a) convert the graph to a GIF and (b) FTP it to a given site (using FTPSocket).
• 5 points extra credit for providing more user-controlled features, such as choice of line or bar width and variable size graph.

Hints, Issues, Suggestions

• Grading will be based on Grading Policy page.
• Please follow Design Documentation standards.
• Due on September 27 in class. Submit your code directly to your TA. Please bring your written documentation and a hard copy of your code to class on September 27.