Hello there, I have a large number of pts files containing xyz data and i'm interested in creating a raster surface via IDW. So far I have imported the pts files as txt to ArcGIS but when i ran the Merge tool from Arctoolbox it gives an error and doesn't complete the process. I have tried so far the function for both txt as well shapefiles, after plotting XY data but i get the same result. The reason why i do this is that IDW requires only one file to be used as input. Any advice or help would be really appreciated, Stathis
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