topic Re: Comparing LAS data to TIN data in 3D Questions https://community.esri.com/t5/3d-questions/comparing-las-data-to-tin-data/m-p/431536#M2563 <HTML><HEAD></HEAD><BODY><SPAN>The </SPAN><A href="http://resources.arcgis.com/en/help/main/10.1/index.html#//015w0000003z000000">natural conversion of the LAS data </A><SPAN>would be to a multipoint file. With the Multipoint file, you could then create a terrain and compare the Terrain and TIN.&nbsp; What might be preferable, but difficult to manage would be to convert the </SPAN><A href="http://resources.arcgis.com/en/help/main/10.1/index.html#//00170000003r000000">multipoint to a single part</A><SPAN> or individual points and then use the </SPAN><A href="http://resources.arcgis.com/en/help/main/10.1/index.html#//00q900000016000000">Add Surface Information</A><SPAN> tool.&nbsp; This will add the z value of the of the TIN to the point.&nbsp; From then you could compare the values.&nbsp; I am not sure what you are looking to get out of this analysis.&nbsp; Generally speaking, the las data should be certified to a certain vertical accuracy and is usually collected at a finer resolution than the TIN would have been.&nbsp; You could probably see this with a simple visual comparison of the Terrain compared to the TIN.</SPAN></BODY></HTML> Wed, 29 May 2013 11:43:10 GMT JeffreySwain 2013-05-29T11:43:10Z Comparing LAS data to TIN data https://community.esri.com/t5/3d-questions/comparing-las-data-to-tin-data/m-p/431535#M2562 <HTML><HEAD></HEAD><BODY><SPAN>I am trying to calculate the vertical difference (delta Z) between an LAS dataset and TIN data to test different data collection techniques. I am trying to avoid converting the data to raster for the comparison. Is this possible? Maybe using a multipoint feature? I have tried searching for an answer but may be looking in the wrong place.</SPAN></BODY></HTML> Wed, 22 May 2013 18:31:37 GMT https://community.esri.com/t5/3d-questions/comparing-las-data-to-tin-data/m-p/431535#M2562 NellHansen 2013-05-22T18:31:37Z Re: Comparing LAS data to TIN data https://community.esri.com/t5/3d-questions/comparing-las-data-to-tin-data/m-p/431536#M2563 <HTML><HEAD></HEAD><BODY><SPAN>The </SPAN><A href="http://resources.arcgis.com/en/help/main/10.1/index.html#//015w0000003z000000">natural conversion of the LAS data </A><SPAN>would be to a multipoint file. With the Multipoint file, you could then create a terrain and compare the Terrain and TIN.&nbsp; What might be preferable, but difficult to manage would be to convert the </SPAN><A href="http://resources.arcgis.com/en/help/main/10.1/index.html#//00170000003r000000">multipoint to a single part</A><SPAN> or individual points and then use the </SPAN><A href="http://resources.arcgis.com/en/help/main/10.1/index.html#//00q900000016000000">Add Surface Information</A><SPAN> tool.&nbsp; This will add the z value of the of the TIN to the point.&nbsp; From then you could compare the values.&nbsp; I am not sure what you are looking to get out of this analysis.&nbsp; Generally speaking, the las data should be certified to a certain vertical accuracy and is usually collected at a finer resolution than the TIN would have been.&nbsp; You could probably see this with a simple visual comparison of the Terrain compared to the TIN.</SPAN></BODY></HTML> Wed, 29 May 2013 11:43:10 GMT https://community.esri.com/t5/3d-questions/comparing-las-data-to-tin-data/m-p/431536#M2563 JeffreySwain 2013-05-29T11:43:10Z