AutoCAD Map 3D :: Lidar And Vertical Transformation?
Aug 2, 2013
I have Lidar files both IMG files and LAS files. I work in Civil 3D so have most Map 3D functions. We also have IDSP 2014 so I have a full version of Map 3D 2014 in there. The Lidar is in UTM - Meters. I need to create a Civil 3D Surface in State Plane - Feet.
Civil doesn't work with IMG files. I have no problem creating a Point Cloud from the LAS files using that to create a Surface. With the Zones set correctly in the drawings I can get the horizontal aspect of the data into State Plane. However the Elevations are still in Meters. If the LAS files were in ASCII. I would convert them directly, but they're not.
Is there any method in Map 3D to do a vertical transformation on either of these file types?
Civil 3D 2012 SP 3 / IDSP 2014
Dell Precision T7400, Xeon CPU 3.16 GHz
Win 7 Pro, 64-bit,12 GB RAM, Nvidia Quadro FX 4600
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Aug 17, 2010
I have several LAS files that I have brought into AutoCAD and created PCG point cloud files. You have the option to assign Civil3D properties so I assign the LAS classification properties but they don't apply to the file.
The classification style seems to work with the ISD file extension in Civil3D, but do the LAS classifications not work for the PCG format?? I can only view the PCG file by single color or by elevation range, not by classification.
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Dec 20, 2013
In Civil 3D 2014 while import .las or .asc file using point cloud I keep getting an error in processing data message.
I have in the past brought in the data successfully (2012, though not often)?
Datum and projection are correct, the data goings in to ArcGIS(had GIS group five the file a try).
The error message in not any more specific than "there was an error processing data"
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Jan 14, 2011
I have recently upgraded to Civil 3D 2011 when we started receiving LiDAR data. I have been playing around with the data a bit and have a few questions on how the data is dealt with. It appears that when a point cloud is added to a surface, it is using the point cloud display somehow to generate the TIN. I believe that the point cloud display is showing a percentage of points based on the maximum number of 1.5 million points. On these particular datasets (citywide LiDAR coverage, about 2,600' x 2,600' panels), we may have 4-7 million points in each LAS file. Is Civil 3D ignoring all points beyond 1.5 million in surface building operations? Also, when adjusting the slider, is there any way to know which points will be displayed...or maybe the points are reduced randomly??
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Nov 19, 2013
I'm working with an area around a couple miles of road running SW to NE. I have metric lidar tiles in GeoTiff format. The tiles are 1,500 meters on an edge. I'm working in US Survey feet.
I originally tried creating a Surface of all 9 tiles I needed and then cropped the resultant Surface. But that was too large for my computer to handle. So I created 9 drawing each with one tile Surface in it. Now I've created a Data shortcut Reference for them all in one drawing. I got all the Surfaces in but noticed that there were gaps between the borders.
I was wondering if it was a coordinate system conversion problem. But all the settings check out. Now I think that this may be an expected behavior. I measured the gaps between the Borders and found that they all ran very close to 6.56'. In metric that's almost exactly 2 meters. 2 m is the separation of points in the Lidar surface.
BTW I'm working this in 2014.
Civil 3D 2012 SP 3 / IDSP 2014
Dell Precision T7400, Xeon CPU 3.16 GHz
Win 7 Pro, 64-bit,12 GB RAM, Nvidia Quadro FX 4600
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Apr 19, 2013
I've been downloading whole tiles from OSIP for lidar surfaces. I've been using the grid files, and they work great. But, I don't really need an entire tile while working in my drawing, and I'd like to clip just my area of interest out of the tile. What is the fastest way to do this? These whole tiles are data hogs, and I fear they are slowing me down.
I used to have a computer at my old job that wouldn't slow at all using this stuff, so I haven't had a reason to learn how to do this until now when i'm forced to work on a laptop.
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Jun 20, 2013
I wanted to import a shape file from GIS, but all contours elevations are 0. The attribute data on contours have ID elevation. How do I query those ID elevation to the contours?
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Aug 14, 2012
We have lucky enough to obtain LIDAR for most of our small City as well as ground only points. My problem is that profiles produced using it are rough and jagged (see attached). I've tried contour smoothing to no avail as well as point removal. Perhaps I haven't just tried enough options.
Should mention also I have breaklines along the CL alignment as well as Edge of Pavement.
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May 10, 2012
Succesfully producing a slope analysis exhibit using LIDAR topographic base information with this version of Civil 3D? I have followed the instructions as best I can and have had no luck. I am using a trial version and this is a big factor in whether or not I will ultimately make the purchase.
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Jun 28, 2013
I have been using Elements 8 for some time and recently purchased an ASUS monitor that is at home in both vertical and horizontal modes. Can I change the Elements 8 format to work in a vertical format to accommodate the larger size possible with a vertical image. It is difficult to manipulate the functions in Elements when the mouse is working in a horizontal mode and you are viewing a large image in a vertical format. If the format of the Elements 8 software can be changes to vertical, any protocol (directions) to accomplish this?
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Feb 12, 2013
While using the 3D extrude and bevel tool, specifically the isometric preset from the position drop down menu. I am noticing that when I expand the shape (in this case a perfect cube), the vertical paths are not exactly perfect, and are not truly vertical, but off slightly. Is this something that can be fixed or adjusted in the settings, or is this how the tool works?
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Jun 17, 2013
I'm referencing in a WMS image (a momochrome LiDAR image) which shows fine on the screen. However when I plot, the image won't -- all other aspects of the drawing come through. It's not on a non-printing layer. I've fiddled with RASTERPERCENT, RASTERTHRESHOLD, and the plotter properties (currently using a PDF plotter but I have tried others with no success) but can't get the image to come through. Adding to the frustration, other images on the same server (i.e. color aerial) come through and plot without issue. Why this particular image won't plot? According to the WMS administrator, there is nothing on their end that "locks" the image prevening it from plotting.
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Mar 1, 2012
I have some transformation parameters from WGS84 to ED50 and I dont know how to use them...How can I use these transformation parametrs in Civil3d ?
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Mar 15, 2013
I am giving a drawing containing all the contour objects in a NAD 83 coordination, I need to transfer them to a project coordination system. I am given with the origins of both system. For NAD 83, it is N6360000 E467000, for the project it is N50000 E8000. I tried to do the transformation using Toolspace->Settings->Drawing Settings->Tranformation, and changed the Local Northing/Easting and Grid Northing/Easting, but does not seem to solve the problem.
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Mar 27, 2013
I am using Civil 3d 2012 and I have a dwg that is in AR North Nad83. The client needs it put in UTM 15 Nad83. Is there an easy way to do this?.
AutoCAD Civil 3D 2012 SP4
Windows 7 (64)
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Nov 20, 2012
My group is trying to convert a dwg from one coordinate system to another. The original drawing contains points, blocks, etc. in 1 system and we need it in a different one. We tried attaching the dwg to a new map with the new system using a layer query, but this did not appear to bring in the objects into the new system.
"Structures" is in the original system (OR83-NF), "StructuresHarn" is in the desired system (ORHP-NIF)
P.S. C3D 2011
Civil 3D 2013, HF3.0
Windows 7, 64-bit, SP1
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Feb 21, 2012
I am using Civil 3D and Map 3D 2010.
I have some points in a drawing set up in a coordinate system and using a specified point file format, I successfully exported them to another coordinate system for use by our surveyors. I also wanted the pipe route in my destination drawing so I created a shp file from a polyline representing the pipe route in the original drawing using Map 3D Export. When I imported the shp file into my destination drawing there appears to be a slight horizontal difference from the point locations. The shp file doesn't land directly on the points.
To try another comparison, I ran a query on the pipe route to perform a manual coordinate system transformation. The result of this is the exact same as the shp file.
My questions are, which method (exporting points vs. shp files) results in the correct coordinate transformation and why are they different? When exporting points I am not using any specific transformation settings, I am simply selecting the destination coordinate system. When exporting a shp file, Map 3D creates a prj file from the specified coordinate system in the drawing. Are there any other settings I need to adjust to get the same result with both processes? The only thing I can think of is I only have the coordinates out to 4 decimal places in my point file format, do I need to go out farther?
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Jul 9, 2013
I have a created a TIN surface with a DEM file. Drawing coordinates are State Plane NAD 83 feet. DEM file coordinates are UTM NAD27 meters. Surface is shifted approx. 835 miles east.
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Jul 18, 2013
The transformation settings are changing every time a drawing is reopened. The computation method is switching from "reference point" to "unity" - see attachment. This is causing the software to use a scale factor of 1 instead of the computed scale factor at the defined reference point when scaling our points from state plane to our local ground system. This completely screws up our entire survey workflow that we have been using for almost 2 years. We had no issues like this in the 2012 or 2013 versions.
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Feb 19, 2013
If you have a dwg that is, say, done in west zone but some agencies want you to provide a table of west and east zone coordinates is there a transform function that will do this in a label?
I would still wan everything in the dwg to be in west zone but be able to display coordinate values in other zones.
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Sep 16, 2013
i am located in Greece and the current progection is GGRS87 .
before the GGRS87 we had a system named HATT with the folowing info:
maps 1/5000 based on the Bessel ellipsoid (1841)
i have many drawings with point coordinates in the old system. is there a way to transform them in the new projection?
what else info is needed for the transformation.
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Jul 29, 2013
I have geotif images that I've purchased from Washoe County GIS. They have world files that work great with data connect. That is, as long as I want to work at sea level. We have a Combined Factor mandated by the County for all record maps. it's a simple grid to ground factor. I can set this factor in the drawing settings and import my sea-level coordinate files just fine. The pboblem is that I can't get the Data Connect to work with the transform settings.The problem is the same with Geotif files and SHP files. I've tried using an x-reference drawing to insert the Geotif and then scale up the geotif but the imagery doesn't scale up.
Is it a program bug that keeps Data Connect from recognizing the transformation settings?
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Sep 6, 2013
I'm using a transformation matrix to adjust objects scale.
Sub Scale()
[...]
''Definition of the matrix
Dim ScaleMatrix(0 To 15) As Double
ScaleMatrix(0) = X_ScaleFactor
ScaleMatrix(1) = 0
[Code] ......
If X_ScaleFactor = Y_ScaleFactor all works fine, but if X_ScaleFactor <> Y_ScaleFactor (e.g. X_ScaleFactor = 2 and Y_ScaleFactor = 4 I get the following exception: eCannotScaleNonUniformly.
It isn't possible to define different scale factors for X and Y axis? It seems a strange thing.
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Mar 22, 2011
I have acsii data that I need to add to a map. My coordinate system for the map is CANA83-3TM114
The coordinate system for the ascii points are unknown. How do I transform the data to the same coordinate system as my map?
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Apr 1, 2010
I have some UTM images that I need to convert to State Plane. If I import them into map with raster design and export them to the state plane coordinate system, they work just fine, but I can't figure out a way to get rid of the black wedge that it makes along the edges of images.
If I query them in using map I can transform the coordinate system, but then every time I open the drawing it takes like 5 minutes just to open.
What has everyone else done to use multiple images in a drawing and transform or convert the coordinate system of the images?
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Jan 6, 2014
Using ACAD2013, any command I try to execute requires two clicks. This specifically occurs with transformational commands - i.e. offset, rotate, mirror, but not line. For example I will enter the "OFFSET" command and hit enter, however instead of prompting me to input my OFFSET variables I will have to hit enter again and then enter the requisite variables. In effect I have to hit enter twice to execute any command of this sort. I have already tried changing my PICKFIRST settings, and AUTOCOMPLETE. I'm at a loss.
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Apr 15, 2013
I choose the vertical type tool or the vertical type on a path tool or the vertical area type tool...and all I get are letters that are rotated 90 degrees clockwise that go down in a vertical line. The effect is the same as if I took one of these lines that I am typeing here and rotated the entire line 90 degrees clockwise. That is not the effect I want. I am tying to get vertical letters stacked on top of one another in a line going vertical. I watched videos and they simply pick the tool and it functions this way, but when I pick the same tool I do not get this vertical orientation of the individual letters, but the 90 degree rotated letter.
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Aug 13, 2004
I am trying to create a CD cover and the back side is one solid color with the visual of a page turning down. How can I do this. I have been working with the 3D transformation, but not sure if this is the best way.
Also, the only way I can choose Filter - 3D Trans is when I am in Mask. At home I can choose it under a regular layer. Does anyone know why this is happening. I get the cone the way I want it, but when I hit OK it is in mask and not a solid cone.
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Aug 20, 2013
Does the transformation box offer a good and bad choice?
The pic below shows the box with red and green sections. Is that just an odd thing or is that there for a reason?
Something like "if it's red you shouldn't move it and if it's green you can move it" kind of thing.
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May 21, 2009
What happens to the image when I transform (Ctrl +T) the image regarding to its re-sampling interpolation aspects? By transform I mean make it bigger or smaller.
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May 21, 2009
In the image size dialog you can determine what gonna happened with the pixels when you change the size of an image by check or uncheck the re-samping. But what happens to an image when I commit a transformation operation (Ctrl + T)?
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