Book Image

Visualforce Development Cookbook - Second Edition

By : Keir Bowden
Book Image

Visualforce Development Cookbook - Second Edition

By: Keir Bowden

Overview of this book

Visualforce is a framework that allows developers to build sophisticated, custom user interfaces that can be hosted natively on the Force.com platform. The Visualforce framework includes a tag-based markup language, similar to HTML that is used to write the Visualforce pages and a set of controllers that are used to write business logic to the Visualforce pages. Visualforce Development Cookbook provides solutions to a variety of challenges faced by Salesforce developers and demonstrates how easy it is to build rich, interactive pages using Visualforce. Whether you are looking to make a minor addition to the standard page functionality or override it completely, this book will provide you with the help you require throughout. You will start by learning about the simple utilities and will build up to more advanced techniques for data visualization and to reuse functionality. You will learn how to perform various tasks such as creating multiple records from a single page, visualizing data as charts, using JavaScript to enhance client-side functionality, building a public website, and making data available to a mobile device. With an interesting chapter on tackling common issues faced while developing Visualforce pages, the book provides lots of practical examples to enhance and extend your Salesforce user interface.
Table of Contents (16 chapters)
Visualforce Development Cookbook - Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface

Adding a third axis


Plotting multiple series on a single graph can be problematic if the values of the two series vary widely. For example, if the total value of won opportunities were plotted against the record count of won opportunities, the total value number would likely be several hundred thousand times the record count number. Plotting these on a single chart would result in the record count plot being so close to zero as to be indistinguishable from it.

The solution to this problem is to display the third axis. The axis is scaled appropriately to the data set that is plotted against it.

In this recipe, we will create a Visualforce page containing a chart that displays the total value of the won and lost opportunities per month for the last year. The won/lost information is displayed as a stacked bar chart. The chart also displays a line series chart where each point on the line series is the number of opportunities that were won/lost in that month. As the number of opportunities will...