The Mudcat Café TM
Thread #59418   Message #1700449
Posted By: Amos
22-Mar-06 - 03:09 PM
Thread Name: BS: The Mother of all BS threads
Subject: RE: BS: The Mother of all BS threads
Here's the big question, relating to transubstanding or any other damn thing:



"Bilinear interpolation and cubic convolution techniques combine a greater number of nearby cells (4 and 16, respectively) to compute the value for the transformed cell. These two techniques use a weighted averaging method to compute the output transformed cell value and thus are only appropriate for continuous data such as elevation, slope, aerial photography, and other continuous surfaces.

"Resampling is part of the georeferencing process; however, it can also be used to adjust the cell size of a raster dataset or can be part of a geoprocessing operation to alter the values of cells.


Should you rectify your raster?



"You can permanently transform your raster dataset after georeferencing it by using the Rectify command on the Georeferencing toolbar. Rectify creates a new raster dataset that is georeferenced to map coordinates. You can save this in GRID, TIFF, or IMAGINE format.

"MOAB doesn't require you to rectify your raster dataset to display it with other spatial data. You might choose to rectify your raster dataset if you plan to perform analysis with it or want to use it with another software package that doesn't recognize the external georeferencing information created by MOAB."


See what I have to deal with, just to keep body and soul together on the same relative planar continuum?

Oi! Such Tsuris! But I can think of a few raster sets around the Cat that deserve being rectified, but good.


A