The width of the picture marker symbol. The width of the symbol spanning from the left to the right side of the image. The default value is 0.0. You can use this property to override the width of the symbol. Note that if you set the PictureMarkerSymbol.height or PictureMarkerSymbol.width to 0.0, then the picture fill symbol will adopt the height and width of the loaded PictureMarkerSymbol.image.