Google Chart Tools
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Getting Started With Charts - Google Chart Tools / Image Charts (aka Chart API) - Google Code
There's no limit to the number of calls per day you can make to the Google Chart API. However, we reserve the right to block any use that we regard as abusive. The quickest way to make a chart for your web page is to use our new chart wizard .Charts Gallery - Google Chart Tools - Google Code
Our gallery provides a variety of charts that are optimized to address your data visualization needs. These charts are based on pure HTML5/SVG technology (adopting VML for old IE versions), so no plugins are required. Adding these charts to your page can be done in a few simple steps .
Dynamic Icons - Google Chart Tools / Image Charts (aka Chart API) - Google Code
This page describes how to create a variety of callouts, bubbles, pins, and other graphics that can be requested by URL, or added as markers on top of other charts. The Chart API enables you to create a variety of interesting callouts, pins, or bubbles that mix text and images. These items are called dynamic icons .
A Datasource is a web service that supports the Chart Tools Datasource protocol. You can send a SQL query to a Datasource, and in response you will receive a DataTable populated with the appropriate information.
Data Queries - Google Chart Tools - Google Code
Simple encoding format lets you specify integer values from 0—61, inclusive, encoded by a single alphanumeric character.
Data Formats - Google Chart Tools / Image Charts (aka Chart API) - Google Code
