PA1

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Programming Assignment #1: 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 1 million, and that there may be as many as 100 values. Graphs should not be larger than 400 by 400 points.

Support all of the following:

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


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


LineGraph on: #(12 13 45) and: #(0.23 10 45 17.3).  "Display a line graph with both sets of values"
BarGraph 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 := BarGraph formOn: #(12 13 45).  "Return a Form with the BarGraph"
f display. "Display the Form"


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

Scenarios

• How do you handle huge spreads in data, say #(0.1 0.2 1000 2000000)?
• 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 color, line or bar width, and variable size graph.

Hints, Issues, Suggestions

• Grading will be based on Grading Policy page.
• Please follow Design Documentation standards.
• Discuss at PA1 Collaboration Space.
• Due on April 30 in class. Submit your code via the turnIn system. Please bring your written documentation to class on April 30.