The point-interpolation gives a height map which is more or less reliable. Its reliability depends strongly on the density and the distribution of the input pointmap. But also on the interpolation method (Moving average, moving surface. Kriging, coKriging etc.).
The resulting rastermap can be sliced. See the ILWIS online help on the Slicing operation. It belongs to the image proceccing operations and it reuires to make a group domain of height intervals. These intervals will define the contour spacing. The resulting sliced map is a polygon map and one can convert it to a segment map (the final contour map) -----Original Message----- From: Yasir Abbas Mohamed Sent: Wednesday, March 12, 2003 08:08 To: Ilwis list; Ilwis list Subject: (ilwis-list) contour map Dear friends, Please how one can make a contour lines with ILWIS 3.0 from a point map. I just want to draw rain isoheyts out of rain data at the ground stations. I tried with point interpolation I got raster maps and not the (classical) contour lines. Any advice is very well appreciated Regards and thanking you in advance Yasir A. Mohamed phD student ________________________________________________________ To leave the ILWIS-LIST discussion list, send a email with 'unsubscribe ilwis-list' in the body to '[EMAIL PROTECTED]'
