I am not experienced in Apex Code, but I need a Radar Chart as a dashboard component. Is there anything on the appexchange, or sample code to get started?
You can check this link: https://developer.salesforce.com/blogs/developer-relations/2012/10/animated-visualforce-charts.html or go to Visualforce developer's guide: http://www.salesforce.com/us/developer/docs/pages/index.htm
The blog already has a lot of good information and sample code for the controller class and Visualforce Charting. You should start by downloading the sample code from there.
In the Visualforce developer's guide, here is the direct link to the chart page http://www.salesforce.com/us/developer/docs/pages/Content/pages_charting_appearance_radar_charts.htm I think they use the class from the following link for the controller http://www.salesforce.com/us/developer/docs/pages/Content/pages_charting_example.htm
Once you have a Visualforce page for the radar chart, you should be able to select it as a dashboard component.
or go to Visualforce developer's guide: http://www.salesforce.com/us/developer/docs/pages/index.htm
The blog already has a lot of good information and sample code for the controller class and Visualforce Charting. You should start by downloading the sample code from there.
In the Visualforce developer's guide, here is the direct link to the chart page
http://www.salesforce.com/us/developer/docs/pages/Content/pages_charting_appearance_radar_charts.htm
I think they use the class from the following link for the controller
http://www.salesforce.com/us/developer/docs/pages/Content/pages_charting_example.htm
Once you have a Visualforce page for the radar chart, you should be able to select it as a dashboard component.
Good luck