Map channels add the realism of texture to a material.
Maps channels assign a pattern or texture to a material's color. The colors of the map replace the material's diffuse color when a map channel is selected.
After selecting a map channel you can use any , or one of the , such as wood and marble. For example, if you want a wall to be made out of brick, you can choose a texture map with an image of bricks. This is the most common kind of mapping. You can also used a procedural map, such as tiles or wood. The procedural maps have properties you can adjust for the effect you want; for example, the tiling size and mortar spacing for a brick patterned material or the spacing of the grain in a wood material.
The map you add to a material can be scaled or it can be fit to the object. The pattern can be tiled or rotated.
Maps are also available for other purposes. You can use more than one map for the same material and can create nested maps.
After you apply the map, you can adjust it to fit on the face or object by using material mapping.