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# CreateClass

Adds a new object class to a classifier.

You can add images to the new object class by setting either the `imagedata` parameter or `imagepath` parameter. Alternatively, add images at a later time using the action AddClassImages.

Type: synchronous

Parameter | Description | Required
--- | --- | ---
`classifier` | The name of the classifier to add the object class to. The classifier must already exist. | Yes
`identifier` | A unique identifier for the object class (maximum 254 bytes). If you do not set this parameter, Media Server generates an identifier automatically. | No
`imagedata` | The training images to add. Files must be uploaded as multipart/form-data. For more information about sending data to Media Server, refer to the Media Server Administration Guide. | No
`imagelabels` | A comma-separated list of labels to identify the images that you are adding (maximum 254 bytes for each label). Every label added to the same object class must have a unique label, so the number of labels must match the number of images provided using either `imagedata` or `imagepath`. If you do not set this parameter, Media Server generates labels automatically. | No
`imagepath` | A comma-separated list of paths to the training images to add. The paths must be absolute, or relative to the Media Server executable file. | No

## Example

The following example adds a new object class named "cars" to a classifier named "vehicles", without providing any training images:

    curl http://localhost:14000 -F action=createclass
                                -F classifier=vehicles
                                -F identifier=cars

The following example simultaneously creates the object class and adds training images. This example provides the paths of the images by using the `imagepath` parameter:

    curl http://localhost:14000 -F action=createclass
                                -F classifier=vehicles
                                -F identifier=cars
                                -F imagepath=image1.jpg,image2.jpg

Alternatively, you can create an object class and add training images by sending the image data, for example:

    curl http://localhost:14000 -F action=createclass
                                -F classifier=vehicles
                                -F identifier=cars
                                -F imagedata=@image1.jpg,image2.jpg

## Response

    <autnresponse xmlns:autn='http://schemas.autonomy.com/aci/'>
      <action>CREATECLASS</action>
      <response>SUCCESS</response>
      <responsedata>
        <identifier>cars</identifier>
        <images>
          <image>
            <index>1</index>
            <label>label1</label>
          </image>
          <image>
            <index>2</index>
            <label>label2</label>
          </image>
          ...
        </images>
      </responsedata>
    </autnresponse>

## See Also

- If you haven't created a classifier, first run the action CreateClassifier.
- To add training images to an object class that you have created, use the action AddClassImages.
- To add custom metadata to the object class, use the action AddClassMetadata.
- To complete training for the classifier, use the action BuildClassifier.

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