Special

Introducing the “Welcome to Xojo” Bundle!

New to Xojo and looking for guidance? We've put together a terrific bundle to welcome you! Xojo Bundle

This bundle includes six back issues of the magazine -- all of year 14 in printed book and digital formats -- plus a one-year subscription so you'll be learning all about Xojo for the next year. It's the perfect way to get started programming with Xojo. And you save as much as $35 over the non-bundle price!

This offer is only available for a limited time as supplies are limited, so hurry today and order this special bundle before the offer goes away!

Article Preview


Buy Now

Print:
PDF:

Review

Chart Part

Issue: 3.5 (May/June 2005)
Author: Greg Fiumara
Article Description: No description available.
Article Length (in bytes): 3,480
Starting Page Number: 8
RBD Number: 3503
Resource File(s): None
Related Link(s): None
Known Limitations: None

Full text of article...

Every once in a while there is a code example that really strikes me. Chart Part from Corey Redlien is a development example that is both visually and functionally stunning.

Originally created for use with his phenomenal application, Redlien Account Executive, Redlien has decided to benefit the REALbasic community by releasing Chart Part as well as several other code snippets under the LGPL. This means that developers can view the source code and use it in their own applications under certain conditions. Chart Part is a new solution to graphing with REALbasic. Supplied with a set of data, Chart Part can create remarkable bar, line, and pie graphs on the fly.

Giving Chart Part the information to plot is the "hardest part" of the entire graphing process. Simply pass a value, caption, color, and label for each point to be plotted and Redlien's hardworking code will handle the rest. Redlien even completes the entire trigonometric math involved with pie graphs to create professional looking results. If you want to further customize the graph, you may pass a title and even a way to format the points to be plotted, such as with currency values.

Although these graphs look good by themselves, this code is open source, so one can easily change their appearance to better fit the appearance of a company or any other setting.

Another benefit to open source software is the ability to learn from the code and mistakes of others. Chart Part is listed on Source Forge, a giant open source community. One can view earlier versions as well as comments and changes from other Chart Part users. In addition, most of the code in this project contains comments so developers can educate themselves as they follow along in Redlien's code. Aside from the code comments, there is no documentation that comes along with the example project.

Redlien indicates that there is still much that can be added to Chart Part with a minimal amount of effort, however, the project has not been updated from its 2.0b1 state since almost one year ago. In fact, Redlien indicates the only major change from version 1 to version 2 is that the graph is now drawn to a picture object instead of directly to canvas. Although this does provide the end developer with more ways to manipulate the graph, Redlien has not made any examples of this public.

If there is any need to add light graphing functionality to your application, look no farther than Chart Part, as it will more than fill the void.

IN BRIEF
 
Product
Chart Part 2.0b1
 
Manufacturer
Corey Redlien
 
Price
Open Source
 
Contact Info
http://www.redlien.com/realbasic/chartingpicture/
 
Pros
Produces beautiful graphs with minimal effort

Can be incorporated into almost any setting

Commented code

 
Cons
Hasn't been updated in quite some time
 
Rating (1.0-5.0):
4.8

End of article.

Article copyrighted by REALbasic Developer magazine. All rights reserved.


 


|

 


Weblog Commenting and Trackback by HaloScan.com