The MSDL has SDK Samples for DHTML/AJAX Visualizations:
https://resource.microstrategy.com/MSDZ/MSDL/940/docs/DeveloperLibrary.htm#mergedProjects/vissdk/topics/VI_AJAX_SDK_Samples.htm
The AJAX Google Graph sample provides an example of how to integrate Strategy with Google Graphs, where the data from which the graph is constructed is passed from Strategy.
https://resource.microstrategy.com/MSDZ/MSDL/940/docs/mergedProjects/vissdk/topics/VI_Samples_AJAX_GoogleGraph.htm
What this visualization sample does, is check the graph type defined in the report, then it generates the corresponding Google Graph Visualization. The graph type has to be one of the following in order to use this sample:
•Pie
•Horizontal Bar
•Vertical Area
•Vertical Bar (default)
(https://resource.microstrategy.com/MSDZ/MSDL/940/docs/ReferenceFiles/com/microstrategy/web/app/transforms/ReportGoogleGraphVisualizationTransform.html)
Users do not have to make any code changes for this to work. Follow the steps below:
1. Deploy the AJAXVisualizationSamples plugin. Steps in the MSDL: https://resource.microstrategy.com/MSDZ/MSDL/940/docs/mergedProjects/vissdk/topics/VI_AJAX_SDK_Samples.htm
2. Restart App server/Web server.
3. Enable the custom visualizations editor in Web. Steps 1-3 here: https://resource.microstrategy.com/MSDZ/MSDL/940/docs/mergedProjects/vissdk/topics/VI_Enabling_the_Visualizations_Editor.htm
4. Create a report with 1 attribute and 1 or more metrics.
5. Switch to Graph mode and first define one of the Graph types listed above. SAVE the report.

4. Next, go to Tools > Custom Visualizations.
5. Enable that top check box.
6. Scroll the list and select "Sample - Google Graph Visualization".

7. Click Ok. You should see the graph now render as a Google Graph.

The example provided in this document is provided “as-is” to the user and assumes that the user:
PREREQUISITES:
For the sample to work, the Strategy Web JAR files must be accessible by the Java Runtime
Environment. The Strategy Web JAR files can be found under:
Note:
More elaborate programs will require additional library files and are out of the scope of this document.
ADDITIONAL INFORMATION:
The Strategy SDK allows you to customize the standard Strategy Web interface, and extend and integrate the Strategy business intelligence functionality into other applications. However, before changing the way Strategy Web products look or behave, it is helpful to understand how the application is built. For more information regarding the Strategy Web architecture or the process of customizing Strategy Web, please refer to Strategy Developer Zone (https://resource.microstrategy.com/msdz/).
To access the Strategy Developer Zone, you must have access to the Strategy Knowledge Base, you must have purchased the Strategy SDK, and you must be current on your Strategy maintenance agreement. If you are a US-based business and believe that you satisfy all three of these conditions but you do not have access to the Strategy Developer Zone, please contact Strategy Technical Support at support@microstrategy.com or at (703) 848-8700. If you are an international business, please contact Strategy Technical Support at the appropriate email address or phone number found at http://www.microstrategy.com/Support/ContactUs.asp.
CUSTOMIZATION WARNING:
This customization is provided as a convenience to Strategy users and is only directly applicable to the version stated. While this code may apply to other releases directly, Strategy Technical Support makes no guarantees that the code provided will apply to any future or previous builds. In the event of a code change in future builds, Strategy Technical Support makes no guarantee that an updated version of this particular customization will be provided. In the event of a code change in future builds, Strategy may not be able to provide additional code on this matter even though this customization is provided at this time for this specific build. For enhancements to this customization or to incorporate similar functionality into other versions, contact your Account Executive to inquire about Strategy Consulting assistance.