AutoCAD Civil 3D :: Clip Or Filter Point Cloud
Sep 1, 2011
I am working with a Lidar dataset that is over 34 million points. It covers an area far larger than I need for our project. I have experimented with point clouds and am able to process and generate a surface from the data by applying a clip boundary to the surface. The problem with this is the surface only has about 540k points out the total dataset and it appears that the points have been greatly reduced in density. I am thinking this is due to the way C3D limits large data sets to display only 1.5 million points and thus my surface data is highly filtered since it is extracted from a small area of the dataset. I have tried setting point cloud display to 100%.
can I somehow filter my point cloud so that I can reduce the area of coverage and thus increase the density that is extracted into my surface?
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Dec 11, 2011
I have been searching for a solution to a problem i have been having. I have a point cloud, and I am wanting to TIN it to create a surface.
When I use the Create Surface tool, no dialog box appears. Everything I have found seems to rely on this Dialog Box. How to get it to display?
Using AutoCad Civil 3D 2011.
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Aug 7, 2012
Point Cloud Index fails on Faro Scans that work in 2012???? Tools in 2013 seem better. Civil 3D and Point Cloud data.
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May 18, 2012
Using Civil 3D 2013, Faro Scene 4.8.2.25521, Kubit PointCloud Pro 8.0.4.7.
Is it possible to turn off the bounding box on a non-Civil 3D, .PCG point cloud that was indexed into Civil 3d directly from the Faro .FWS file using the "POINTCLOUDINDEX" command?
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May 23, 2012
How can I rotate my point cloud to have the front view on the top. I want to optimize the surface creation on the lateral surface of a deck and not on the ground (top) surface. I think to rotate 90 degrees on the X or Y axis.
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Nov 19, 2013
Civil 3D point cloud tools (ribbon) are different than AutoCAD's. Is there a way to bring up AutoCAD's point cloud ribbon in addition to Civil 3D's ribbon?I guess if the commands are the same, I can just copy the ribbon from AutoCAD's CUI and plop it into Civil 3D's CUI.
But, is there a better way or is there something I'm missing?I'm looking for the clipping tools and the point cloud display otions (scan colors, elevation, normal, intensity, etc.)
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May 28, 2012
while i am trying to load my point cloud files the points appeared in the model but not all points
i entered to the setting of the point cloud from the toolspace toolbar , i found that there are about 32 million points but only 700000 points are displayed in the drawing. Is there a way to display all the loaded points in my drawing to show all the points since i need to render a high resolution pictures for my lots.
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Feb 21, 2013
I have a point cloud with 161 million points in it. This is basically fine and works well but I need to create equally high resolution surfaces from certain regions of the point cloud. No matter what size I choose my export shape, it will only create a surface from a ridiculously small 750,000 odd points, a 'feature' which has been documented on these forums before. I have POINTCLOUDDENSITY set to 100.
My question is, how can I build a surface from this high resolution point cloud data that has more than 750,000 odd points?
I'm thinking about mosaic'ing - ie. making several smaller surfaces over the required area and pasting them together.
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Jul 10, 2012
2012 SP2. I get this very descriptive message while trying to create a point cloud: The following error occurred processing the point cloud data: An error ocurred in data processing.
I've previously created point clouds from the same data (ENZ comma delimited) without a problem. I believe this was done before applying SP2. Any problems creating point clouds since SP2?
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Feb 13, 2013
I might be missing somehting completely, but I am reading with Civil 3D 2013 you should be able to clip a Point Cloud, but I am not seeing the clipping panel under the point cloud tab.
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Mar 14, 2012
My surveyor gave me a Trimble .tsf point cloud file....how do I convert that dude to an AutoCAD .las file?
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Jun 7, 2012
I see that the Point Cloud Feature Extraction is now part of the Productivity Tools for Civil 3d 2012. Are these tools available in 2013? I am not seeing them anywhere. It seems goofy that there would be more tools available for the old release - what's the incentive to make the switch? Would you expect they will be available for 2013 sometime soon? I'm not complaining, I really like 2012
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Nov 1, 2012
See pic. Top pic is 2013 point cloud properties. bottom pic is 2011 point cloud properties. 2013 has a new 'point cloud adjust' option in properties.
Both drawings have same 'Lidar Classification' Style, but 2013 is all gray. I tried changing some fields inside the properties for 2013 under the point cloud adjust to no avail.
why this is like this and what I need to do to see the different colors for the different classifications.
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Apr 19, 2012
When I try to index a Faro fls or fws file the process fails with the error message "Point Cloud File Indexing has Errors".
Civil 3D 2012
HP Z210
OS Windows 7 64 Bit
Core i7 16GB Ram
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Dec 13, 2012
I have a surface based on a point cloud. I decided to add a few more tiles of data to the point cloud and was expecting that the surface would update (after rebuilding) to include the new extents - but there was no change. The surface doesn't have any boundaries or breaklines but does have edits.
Do I need to add points to surface again? Will this duplicate the orignal point data or would it just add the new data. I didn't want to lose my edits if possible.
Infrastructure Design Suite Premium 2014
Self-built i7-3930K, 16Gb RAM, P9X79 m/board
SSD(system), HDD(data), Win7Pro64, Quadro K4000
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Jul 12, 2012
It was in Feb - March 2012. I was then using AutoCAD Civil 3D 2012. I had faced a problem of getting ground data for a large surface by using satellite imageries processed by some government wing of USA (NASA?), have lost track of it.
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Mar 19, 2012
I have a point cloud dwg. Is there a way to increase the number of points displayed? The properties of the cloud say there is 14,000,000, but it only displays 34,000. Is there a way to increase the 34,000 number? See Image.
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Jan 7, 2013
I know that there is a limitation on the numbers of points added to a surface from a point cloud. But I'm curious how Civil 3D determines which points to exclude from the surface. Is there a special alorithm/criteria the software uses?
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May 30, 2012
how to match up certain points. I have imported 2 point clouds and have tried to use the 'align' tool to specify three points from the source object (cloud) and three points from the destination object (cloud). When doing this, it does not properly align them. The point cloud makes it difficult to select the exact point I would like to align, since there may not be a point at that exact location, but close to it. Does AutoCAD require the points in alignment to match up perfectly or is it capable of doing a best fit?
Also, is AutoCAD capable of creating a solid 3D piece from the point cloud? I would like to take all of my points and make a smooth object.
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Mar 29, 2010
AutoCAD 2011. C#
How to access the point positions within a Point Cloud using C#? Or is this function not provided in the managed class?
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Nov 9, 2012
i need to know if there is any way to control the points in the point cloud.
1. either only import the point cloud in a polyline area i specify
2. add all the points within a boundary not limited to the pointclouddensity = 100, freaking default is 15 almost cost my job today. extremely stressed out right now.
i am talking about extreme lidar surveys. 1km 1km LAS/0.5m contours/xyz files times 355 of them. covers a 2km wide corridor. but i only need 100m wide after i define the road alignment. no need to have all the extra points.
right now i densify the heck out of it and end up like 5-12m points. decent but not good enough because the geotech is bitching about that accuracy is not good for some feasibility study. or is there any software i can do this besides civil 3d.
what i want can also do is automate the 'add points to surface" under point cloud and have the software do multiple boundaries without having me baby it over the night. right now every click is 5 minutes and adds like 400k to 1 million points. Civil 3D 2012
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Apr 6, 2012
how to access the positions of every points in pointcloud(.pcg files)?
Isn't it available in ObjectARX.NET 2012?or should I write my own warpper for .NET?
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Mar 8, 2011
I can get my stylised map from Promap into Map3d 2011, and I have tried importing the point cloud data which I have as a esri ascii grid file, it is basically 3 columns of numbers:- for north, east and height.
Unfortunately when I choose to format as nez (when importing) it turns the whole lot round by 90degrees ...
I have tried importing it as enz but no joy, and also in niether case will it align with my map (have tried using coords and not using coords).
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Mar 27, 2012
I use POINTCLOUDINDEX to convert .las file to .pcg file, then I use POINTCLOUDATTACH to add .pcg file to model space.
How can I get the 3d coordinates of points in .pcs files?
I use ObjectARX in .net.
I can't find any Entity types related to pointcloud, should I find in other namespace?
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Jan 3, 2012
I am trying to trace part of my point cloud, which has been aligned according to a new UCS I set. Drawing on the top down view, a poly line works fine out in the black ether or the model space, however when I attempt to trace over the point cloud it shoots way off in the distance.
My node snapping is turned off of course, but this only happens when I click over a part of the point cloud, as if it was snapping to the cloud and getting confused.
When I turn snapping off completely I can click anywhere I want and I'm fine. This suggests to me that it is a snapping issue, although I was under the assumption that "Node" was the only snap setting that related to point clouds.
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Apr 20, 2012
AutoCAD 2013 point clouds can have a 3D bounding box displayed, and you can grab the grips to edit the box, x, y and z. It's a nice feature.
Using vb.net, will I be able to programmatically move those bounding box points?
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Mar 19, 2013
Supposedly there's a way "To Convert One or More Surfaces to Solids":
[URL]
However, I'm unable to find Home tabSolid Editing panelThicken.
I'm trying to take LIDAR/Point Cloud data and 3D print it (in the end, I need to make an STL file). I've created a 3D surface from Point Cloud data which results in a Raster Layer. I do not know how to convert the surface that's in the Raster Layer into a solid.
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Nov 22, 2011
I was wondering if there is a way to select specific 3D points out of a point cloud (.pcg). I am new with Autocad and handling of point clouds .
I can think of various things that you might want to do, as in clean up a bit the data or even delete some areas that you are not interested with. additionally, one might want to do some calculations, so selecting points first and the running a list script to use that points can be handy as well.
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Mar 7, 2013
I'm working with a point cloud in 2013. The color comes in when I convert to .pcg and import into Revit. But I can't get the color to display in CAD. I've heard it may be a visual style problem, or a setting in my hardware acceleration, but nothing seems to work.
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Apr 17, 2013
I'm trying to access the style manager to allow classifying LiDAR point cloud based on elevation. I have been able to attached the point cloud and see it on the drawing. For some reason I can't see the Point Cloud Menu, which I believe should be showing up beside "Express" menu on the top toolbar.
I have AutoCAD Map 3D 2011.
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Sep 12, 2013
I have a point cloud of an excavation surface, i want to create a surface from this points. 3d civil can do it but im not 3d civil user, is there any way to do it in autocad or in 3ds max.
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