WMS:Images

Images are one of the four basic object types that is supported in the Map module. An image is typically a scanned map or aerial photo in TIFF or JPEG format. Images can be imported to WMS and displayed in the background to aid in the placement of objects as they are being constructed or simply to enhance a plot. Images can also be draped or "texture mapped" onto a TIN or 2D grid.

WMS supports the following image types:

• TIFF

• JPEG

• MrSID

• ECW

Image Display Options

Once an image is imported, the Display Options command in the Display menu can be used to control how the image is displayed. The Image Display Options button of the Map tab brings up the Image Display Options dialog. The following display options are available:

Draw on XY plane behind all objects

If this option is selected, the image is drawn in the background prior to drawing any other objects. This mode is used to aid in the creation of new objects or to simply enhance a plot. The image is only displayed in plan view.

Texture map to surface when shaded

If this option is selected, the image is "draped" or texture mapped over the designated surface (TIN or 2D Grid). The image must be registered such that the surface lies within the domain of the image. The surface is texture mapped when the image is shaded using the Shade command.

Image Crop Collar

Many of the images available for use in WMS are the standard USGS map series. These maps have been scanned as is and contain the information on the collar (border) of the maps. This information is okay and in fact you may want to see it, but often it is convenient to remove the collar (especially when you are tiling multiple images together).

The Crop Collar command, available by right-clicking on an image in the Project Explorer, can be used to automatically remove the collar from the image for display.

Related Topics

• Map Module
• Importing an Image
• Screen Capturing an Image