If you want to display a background image in your map view, then you should add an Image overlay. The available image formats include: .bmp, .gif and .jpg.
Area Coordinates - Since image files do not contain geographic information, you must specify the spatial location of the image. This is done by specifying the map coordinates of the lower left corner of the image (Minimum X and Y) and the upper right corner of the image (Maximum X and Y).
Import geo reference from file... - Some DHI programs allow you to geo reference an image file, in which case either a .bpw or a .bmpw file is created that contains the origin coordinates and some scaling information.
Image Styles - The Image Style is related to the way the pixel colours are averaged (or not averaged) in overlying grids and images. The Image Style variables have little influence on the image display when the image is displayed in the Background. However, in the Foreground, the Image style is very important. The best results are obtained with the Blend Colours selection., in which case the Transparent colour option is not used.
