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ooo...thanks for the info..=) then, how to manually classify those data..? I really do not have any idea.. Mr Jeff, you said that there is a tool that may help in classify,but it needs the data to be in LAS format..I just want to ask, is there any method that the ascii format can be converted into LAS format...?
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04-26-2012
04:43 AM
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Hi..I'm a student, nedd help for my thesis project 😃 Does anyone know how to filter the LiDAR data? I had created the raster file from LiDAR ascii format. I need to produce an EDM. The problem is, I do not know how to filter the non ground data from the raster, so that there are only ground data left. Any help is much appreciated 😃
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04-25-2012
05:11 PM
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vattarai, Sorry for not updating my progress..yes, I did re-creating the terrain and it works... terrain was successfully generated.. then, I created a raster files using 'Terrain to Raster' under 3D Analyst Tools in ArcToolbox.. however, the raster created looks so rough..Is it because of the 'Pyramid Level Resolution'..? because I've choose 2 for the Pyramid Level Resolution...what does it mean by 'Pyramid Level Resolution' and how it affect the raster file..?
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12-20-2011
02:05 AM
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Can anyone explain to me why is the terrain generated only half...?
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12-16-2011
03:20 PM
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Thanks vattarai..! 🙂 I think it helps a lot by creating terrain to create raster. I've tried the method, and it works. However, almost half of the data cannot be generated into terrain. Herewith I attach the image of the terrain that I snapped from ArcGIS.
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12-15-2011
09:04 PM
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Thanks for the advice! 🙂 I've tried the 'Add XY Data' using sample data (the one that I've simplified) which contains only 1048576 points instead of using the full data and yes, it works..! I can proceed to generate TIN and also raster files. However, when I tried using the full data which contain 51424541 points, TIN cannot be generated. Is it because of the file size..?
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12-14-2011
03:30 AM
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here is the sample of the file...hopefully u can help...thanks...
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12-11-2011
05:07 AM
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Hi everyone, I'm an undergraduate student, need help for my final year thesis. I have a LIDAR data which is in .XYZ format. How can I process the data to generate a raster files? I have tried using ASCII 3D to Feature Class tool under 3D Analyst/Conversion toolset in ArcCatalog, however, the .shp files generated is problematic. The points do not have height information, hence, I cannot proceed to generate TIN. I do not understand why the software cannot read the Z information from the .XYZ files. Is there any other way to create raster files from the .XYZ files? Really need help..(Note : I'm using ArcGIS 9.3 and the .XYZ files using TAB separator) Thank you
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12-08-2011
05:20 AM
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