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Web Map Specification


Defines an image or a chart to be displayed in a popup window.

Referenced by: popupElement, popupInfo


Property Details
altText A string providing the alternate text for the media.
caption A string caption describing the media.
refreshInterval Refresh interval of the layer in minutes. Non-zero value indicates automatic layer refresh at the specified interval. Value of 0 indicates auto refresh is not enabled. If the property does not exist, it's equivalent to having a value of 0. Only applicable when type is set to image.
title A string title for the media.
type A string defining the type of media.
If property is present, must be one of the following values:
  • barchart
  • columnchart
  • image
  • linechart
  • piechart
value A value object containing information about how the image should be retrieved or how the chart should be constructed.
Must be one of the following values:


  "mediaInfo": {
    "title": "Chart stats",
    "type": "barchart",
    "altText": "This chart shows statistics",
    "caption": "For a better idea...",
    "value": {
      "fields": [
      "tooltipField": "relationships/2/Official"

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