mb1005

Nearest neighbor on a globe

Discussion created by mb1005 on Mar 22, 2013
Hi, I hope someone can help me. I have point data in a shapefile that depicts selected locations aroudn the world and I am trying to use that data to create a raster image using the nearest neighbour to assign a value to each raster cell.

So far, that is ok - I am using natural neighbour function. But it only creates a raster image within the confines of the points:

[ATTACH=CONFIG]22874[/ATTACH]

What I really want is for the rest of the globe to be filled in. Is there a way this can be done? I tried using the 'set extent' function to the global map I have but it still gave the same result.

Also, is there a way of Arc considering the northern and southern extents of the map linked, and the east and west linked, so that the values are nearest neighbor across teh globe, rather than the 2D map?

I hope someone can help!

Mirianna
University of Southampton

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