ABSTRACT
In recent sophisticated work, colours are related to the density and hardness of the materials encountered, with great enhancement of clarity-here one is looking for contrast rather than gradation.
Various pseudo-perspective effects can be produced using available software, or modifications of it. These are sometimes called ‘wire frames’. The effective plot of a resistivity survey at Farnham Castle (Fig. 108) was produced by David and Andrew Graham on an Apple Macintosh computer system, with experimental delineation of the moat by (appropriately) ‘flooding’ the lower reading levels with solid black. An attraction of this type of display is that it can be rotated to find the most telling view. Strata Software of Bradford have specialized in this type of presentation especially for archaeology, and have also combined it with colour.
