JMap.MapContext.setPreviewImageSize
Set the preview image size, by default size is :
preview image size
if given size is not an object having positive and greater than zero width and height
// set the review image sizeJMap.MapContext.setPreviewImageSize({ width: 100, height: 200}) Copy
// set the review image sizeJMap.MapContext.setPreviewImageSize({ width: 100, height: 200})
JMap.MapContext.setPreviewImageSize
Set the preview image size, by default size is :