Raster DEM to Tiles based on shapefile???

JeffLangella — Mon, 14 May 2012 16:51:20 GMT

Hello,

A little bit of a background. We are receiving LIDAR Data for whole counties at a time, this can be anywhere from several 100 to several thousand tiles. Each LAS tile has a specific name that we will eventually want to have a raster for each LAS tile. I currently created a GeoDatabase, was able to convert the LAS files to multipoint and generate a terrain for all the tiles. I then converted the Terrain to a raster. I want to be able to now take that one raster image and clip it to the shapefile grid, so if it has 700 tiles i am given 700 raster DEM's and have them automatically name the raster to the tile name.

I was able to use "split raster" and input the cell size, and it works. However, the names of the tiles are generic. Any thoughts?

Thanks,

Jeff

Re: Raster DEM to Tiles based on shapefile???

JeffreySwain — Tue, 15 May 2012 12:55:47 GMT

The Point File Information tool will create a series of polygons based on the lidar data. That could be used for the index grid, since it will have the original LAS data there. What you could use is the tool at 10.1 that will convert the LAS Dataset directly to a raster if that is your preferred display method. You would have to create the LAS dataset, but the process is simply adding the LAS data directly to the LAS Dataset, no pyramid creation is necessary like a terrain.

However at 10, I do not know of a way unless you cyclically process each individual file from LAS to terrain to raster for you to end up with the 700 LAS and 700 DEMs. I suppose since you have the larger terrain, you can convert it to a raster and then iterate through the point file information polygon and clip each one. I am not sure which one would be faster based on what you have already done.

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Raster DEM to Tiles based on shapefile???

Re: Raster DEM to Tiles based on shapefile???