Exporting Multiple Charts in a Single Image

Starting version 3.11.0, FusionCharts Suite XT lets you export all charts on a page in a single image at once, in the JPG and PNG formats. With this, you also have the option of customizing the exported charts for parameters like the width and height of the exported chart, the background color, transparency, and so on.

Multiple charts can be exported at once only in the PNG and JPG formats.

This article explains how you can:

• Export multiple charts at once and customize them<

• Selectively export charts

Exporting Multiple Charts at Once and Customizing the Exported Charts

To demonstrate how multiple charts can be exported in a single image, we've created a sample with four charts. The sample also includes a button that is to be clicked to download the charts in an image.

Take a look at the sample shown below. Click the Export Charts button to export the charts in a single image.

The image thus downloaded is as shown below:

Read on to know the methods, objects, and attributes that are used to export multiple charts using the default export configuration as well as how you can customize it.

The FusionCharts.batchExport() method enables batch export of charts. This method can take:

• No arguments

OR

• Object as an argument

The arguments taken by this method are explained below:

Note: All the above arguments listed below are case sensitive.

For the above exported image, we have specified the:

• Default file name of the exported image
• Format of the exported image

The data structure of the batchExport() method, to export the charts in the above sample is given below:

batchExportConfig = function() {
    FusionCharts.batchExport({
        "charts":[
           {"id":"chart-1"},
           {"id":"chart-2"},
           {"id":"chart-3"},
           {"id":"chart-4"}
        ],
      "exportFileName":"batchExport",
      "exportFormat":"jpg",
      "exportAtClientSide":"1",      
      });
};
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Selectively Exporting Charts

The previous sample has four charts—the sales report for Apple products from 2012 to 2015. Let's say that out of these four charts, you need to download only two charts—assume, only the ones for the years 2015 and 2012.

The charts object argument of the batchExport() method lets you configure this selection. All you need to do is, in the charts object, specify the IDs of only those charts that you need to export.

Take a look at the sample shown below:

When you click the Export Charts button in this sample, the image downloaded is as shown below:

For the above exported image, we have specified the:

• Width and height of the exported image
• Default file name of the exported image
• Format of the exported image

Therefore, to download only the charts for the years 2015 and 2012, this is how you code the batchExport() method:

batchExportConfig1 = function() {
    FusionCharts.batchExport({
        "charts":[
           {"id":"chart-1", x: 25, y: 25, width: 400, height: 225},           
           {"id":"chart-4", x: 25, y: 275, width: 400, height: 225}
        ],
      "imageWidth": 450,
      "imageHeight": 525,
      "exportFileName":"selectiveBatchExport",
      "exportFormat":"jpg",
      "exportAtClientSide":"1",      
      });
};
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