ESRI has finally undated their rubber-sheeting functions in ArcMap (9.2) to allow for Spline georectification and full rubber-sheeting. The new function also allows for the use of raster data making it much easier to compare the features of old and new maps and to display them in a pleasing and informative way. Below is a georectified sheet of the Waldseemüller 1516 Carta Marina that shows how it must be rotated in order to get the best spline fit.
For more information on splines see http://mathworld.wolfram.com/Spline.html
Monday, February 12, 2007
New Spline Interpolation Function
Click on figures to enlarge