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If you've set up a real-time chart that renders initially, but doesn't update in real time, do the following:

  • Check if you've specified a correct and valid path for dataStreamURL in XML/JSON data
  • Check if you've specified a valid value for refreshInterval in your XML/JSON data
  • Check if dataStreamURL is returning proper data. To test this, just open your browser and run this page. It should return the data in text format.
  • Make sure the output data doesn't contain any carriage returns (new-line characters) or HTML elements. In many scripting languages, these are automatically added. You'll need to remove them.
  • You also need to make sure that the page which provides the incremental update data to the charts must be hosted on the same sub-domain in which the charts are hosted - otherwise, owing to security restrictions, the charts won't be able to receive updated data. Due to security restrictions, charts are allowed to retrieve data only from the same sub-domain in which the charts are residing. Data can only be loaded from a domain that is an exact match to the location of the charts, including sub-domains. For this reason, a chart residing at will not be able to access data from

    If you wish to load data from a different domain, you can set up a proxy page at the same sub-domain that will actually request data from the distant domain and then relay it to the charts. You must be able to upload and run a server-side script on a server in the same domain as the charts. In this method, a chart accesses the script, which loads the information, retrieves it and returns the information back to the chart. This method is best if the server hosting the data is not under your control (for example, a public source or a web service).

  • If you are using Flash charts, switch on the debug mode of chart. It will provide you with a lot of valuable information when debugging.