{
    "dataRoles": [{
        "displayName": "urls",
        "name": "urls",
        "kind": "Grouping",
        "description": "Urls of pictures, example: 'http://www.example.com/xx.png'"
    }],
    "objects": {
        "layout": {
            "displayName": "layout",
            "properties": {
                "rowsCount": {
                    "type": {
                        "numeric": true
                    },
                    "displayName": "rowsCount",
                    "description": "How many rows?"
                },
                "rowGap": {
                    "type": {
                        "numeric": true
                    },
                    "placeHolderText": "{value}%",
                    "displayName": "rowGap",
                    "description": "The distance moved during each cycle.(%)"
                },
                "columnGap": {
                    "type": {
                        "numeric": true
                    },
                    "placeHolderText": "msec",
                    "displayName": "columnGap",
                    "description": "How long a cycle takes? (msec)"
                }

            }
        },
        "animation": {
            "displayName": "animation",
            "properties": {
                "feet": {
                    "type": {
                        "numeric": true
                    },
                    "placeHolderText": "{value}%",
                    "displayName": "feet",
                    "description": "The distance moved during each cycle.(%)"
                },
                "interval": {
                    "type": {
                        "numeric": true
                    },
                    "placeHolderText": "numeric",
                    "displayName": "interval",
                    "description": "How long a cycle takes? (msec)"
                }

            }
        }
    },
    "dataViewMappings": [{
        "categorical": {
            "categories": {
                "for": {
                    "in": "urls"
                },
                "dataReductionAlgorithm": {
                    "top": {}
                }
            }
        }
    }]
}