--- Start of Idrisi List message Hello, I would prefer to use TIN interpolation to create a raster from a vector point file. I realize I must use the TIN function followed by the TINSURF command to get a raster image. The TIN command creates two files, one a vector image of the vertices between points and the other a text file detailing the relationship between vertices. Here's my problem: There are some vertices that I would like to remove since they constitute a portion of a triangle for which I would prefer no coverage. In my case, the triangulation included areas over land for points that represent data from oceanographic observations. In essence, points separated by land were connected as part of the mesh. Using the export function it is possible to identify and remove individual vertices so that the mesh more accurately represents areas of water where interpolation is wanted. I can then import the file and can display a more accurate mesh. However, to proceed with interpolation I also need to include the text file (.tin) that describes the relationships between the vertices. Of course, the old file does not reflect changes I made to the .vxp file. Is there a quick way to create a new .tin file from the new mesh or must I also (tediously) delete lines from the .tin file so that interpolation may proceed? Any ideas or hints would be helpful. Cheers, Daniel
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