Increasingly, landscape designers are being asked to use aerial photographs as a base for design work. Many of these image files are very large. Standard CAD software often struggles to display and manage them. gCADPlus can load and display GIS files with the extension ecw. The figure below shows an example showing an ecw image file from an aerial survey of part of the coastline from South Australia. The file is a massive 1.5 Gig in size and yet displays quickly. Note the inclusion of contour data. It is possible to zoom in on small parts of the photograph and use it as a base for new design work.