I have just received a large amount of ASCII DEM files. In total 564 Files each containing 40,000 point data (22.560,000 Points). I would like to convert this into a point cloud with a view to interpolating to raster for analysis and cartographic output. I have both ArcGIS Advanced and FME 2014 to work with. I did this before a few years ago and had problems importing into Excel due to restrictions on the amount of rows excel can read/write. Does anyone do this kind of work regularly and could advise me on suitable workflows to produce raster data from these files including the prep-work to create point cloud data, and also the interpolation process to create realistic and accurate raster data.
The data format is one point per line...unfortunately each file has the file name written on line 1, and there are other data written in the columns such as a code for the data source as well as slope (gon) and aspect (gon).