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Google Visualization API Essentials by Traci L. Ruthkoski

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Data sources for Charts

The integrated nature of Spreadsheets and Fusion Tables as data sources make the coding of Charts with these external data sources for the Visualization API quite straightforward.

Spreadsheets

In Spreadsheets, two preparation steps must be addressed in order to use a Spreadsheet as a data source with the Visualization API. The first is to identify the URL location of the Spreadsheet file for the API code. The second step is to set appropriate access to the data held in the Spreadsheet file.

Preparation

The primary method of access for a Spreadsheet behaving as a data source is through a JavaScript-based URL query. The query itself is constructed with the Google Query Language (described in more detail later in this chapter). ...

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