topic Re: LAS Point stats as Raster tool outputs in 3D Questions

LAS Point stats as Raster tool outputs

NeilAyres — Thu, 21 Aug 2014 09:23:10 GMT

Been processing some lidar / las data.

Built the las dataset no probs.

Then I wanted to do some qc / qa.

Pulse counts etc from this tool are pretty self explanatory. But then I looked at building a raster using the "PREDOMINANT_LAST_RETURN" option.

The help says this makes a raster from the "Most frequent last return value". I took this to mean that I could basically output a quickish raster dem image, but it doesn't do that. What I get is a raster consisting of a range of values from 1 to 5, with most being 1. ie not the value of the return but which was the last return.

Am I mis-interpreting what this tool can output?

Using ArcGIS v10.2.

Cheers,

Neil

Re: LAS Point stats as Raster tool outputs

XanderBakker — Thu, 21 Aug 2014 13:46:15 GMT

Hi Neil,

The range of values are actualy the return values. This function just returns statistics on the data, not the data itself. The "PREDOMINANT_LAST_RETURN" allows you to create a raster that indicates which return number was the predominant last return.

What you need is probably the LAS Dataset To Raster (Conversion).

Kind regards, Xander

Re: LAS Point stats as Raster tool outputs

NeilAyres — Thu, 21 Aug 2014 15:24:11 GMT

Thanks Xander,

that does look like the correct tool.

Now if I knew how to flag your post as correct I would do it....

Cheers, N

Re: LAS Point stats as Raster tool outputs

XanderBakker — Thu, 21 Aug 2014 15:34:49 GMT

I think you found out. Thanx, hope the tool will produce that data you're looking for...