AutoCAD Civil 3D :: Surface Display - Weeding Contour Line?
Jul 24, 2012
Is it possible to weed contour lines displayed in a surface based on the slope? I am having an issue plotting construction plans due to steep cut slopes and flat adjacent areas. I have several cuts ranging from 33%-50% adjacent to flat areas around 1%. Due to the drawing scale required by the client and the .2FT and 1FT contours required to detail the flat areas, my steep cuts appear as dark hatches due to the tight contour lines.
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Nov 5, 2013
I want to do a simple thing : drop ortho-photo on surface generated from contour line.
First thing, I need the basic terrain. I did import my contour line in a new draw, using the import map feature. I then saved the draw under the name " topo ". At this point, the contour line are 2D break line with no elevation.
I then opened a new draw to which I did associate my draw " topo ". Then I used a query to modify the elevation of the line using the attribute " contour " in my table, thus resulting in my breakline to become 3-D. It works fine. Then I save the new draw as " 3D_Topo ". I then get a warning :
" The association between objects interogated in the current drawing and associated will be deleted once the current document of the draw is closed " (I made the translation from french to english, in french it stated like this : " L'association entre des objets interrogés dans des dessins courants et associés sera supprimée une fois le fichier de dessin courant fermé. " ).
Well question #1 : What does this warning mean / imply ?
Then, I have those .ecw files as ortho photo which I want to import. So I use the function " connect " with raster image, then I select my file, then I " add to draw ".... then something very strange happens.
Sometime, the image appears correctly...and some other times I get nothing and I get this " disconnected " message in the task pane ..and no matter how many time I actually connect again the .ecw files, it will not happen in the draw ! Then I simply close the draw, start map 3D again, then I do the exact same thing, and sometime it works, sometime it doesn't.
Question #2 : any clue on why the .ecw files sometime works, sometime doesn't?
Now, let's assume I finally made it to connect correctly and that Map3d didn't crash whilst I was doing it (because I don't know for you, but here, it does happens quit often), I now have (as shows in the picture I attached) two thing. A surface made (well, I went back in the civil 3-D module to make the actual surface from the breakline definition) with the contour line and a imported image. I now want to drap the image on my surface! So I use the option " drap " which is in the surfaces option (in the ribbon surface tools)... well it looks nice since it propose me to use the surface I made up with the contour line as the base and the imported .ecw files as the file to be draped upon. So I simply do that and.... well...nothing happens! My image isn't draped at all, it stays there,
Question #3 : How should I proceed to actually drap my image over my surface ?
Question #4 : Considering I made it to drap the surface, how can I save this new draw independently of the attached other draw or database?
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Sep 19, 2012
I am having problems viewing my contour lines after I create a surface. I create the surface using points. The contour lines will show up when I create the surface. After I close the program or the drawing, I am not able to see the contour lines again. The contour lines are on in the surface style. How can I see the contour lines without creating the surface again?
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Apr 27, 2011
I have a drawing set to UTM83 Zone 14 Meters and my drawing units is set to meters also. I created my surface from my point cloud. When i do the contour extract feature (surface object extract), the contours elevation is in the wrong datum or elevation? The surface contour is 620 but the same extracted contour says 188.97? Curious why this happens. It seems to me that it is back calculate elevation or datum to a different coodinate system.
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Mar 2, 2012
I have Civil3d2012 and have created a surface in one drawing and then referenced it to another. It appears to be working, but the contour labels will not work on the drawing where the surface is referenced. I have all the appropriate layers on.
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Jul 8, 2013
I just upgraded to Civil3D 2014 and Windows 8. When I create a TIN surface using a DEM file no contour lines are displayed. Points are processed and triangles are created and can be displayed but no contour lines. Contour line layers are set to display in the style file.
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Feb 24, 2012
I have drawing giving to us for a senior design project. I'm trying to create a surface to so that I can analyze cut/fill. Not sure if what i'm doing is right or wrong, I've never used civil 3d. But i'm getting break-line errors whenever i'm trying to create the surface from the contour lines.
Heres a link i took of what i'm doing on youtube [URL]........
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Mar 4, 2012
I am using Civil 3D 2011 and wondering how to create just one contour on an existing surface at a specific elevation. I need to show where floodwaters would get to at a specific elevation so that contour would be the easiest way if I can contour the surface with just 1 elevation. I don't want to have to create 0.1' contours all over the site and then remove all the extras.
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Mar 29, 2012
So I have an existing grade surface and I am laying out a number of different site designs. I've got all my surfaces from those site designs on different layers each displayed in a different layout. I need to label existing contours on each layout in different places. I've setup additional contour label styles (two for each design, major, and minor) and layers (two for each design, major, and minor). However, when I add labels to my existing surface, they come in on the right layer, but whenever I freeze any of the many layers my contour labels are on, they all turn off. The only workaround I can figure is to make copies of my existing surface for each design option and label each independantly. However, this is inacceptable as far as data management goes, since my one file will be hundreds of megs with all those surfaces.
Windows 7 x 64 bit
NVidia Quadro 2000 Dual Monitor
6.00 GB RAM
Intel Xeon W3550 @ 3.07 GHz
Civil 3D 2013 SP 2, Civil 3D 2012 SP2, Civil 3D 2011 V3, Civil 3D 2010 V3
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Nov 26, 2013
I have 400 files each represent a tile of contour at 0.5m interval, if I xref all into one dwg it is extremely slow. These files have some 3d blocks which represent xyz and I made a .net program to open each file with "readdwgfile" method. However turned out that the points are not dense enough to generate the same accuracy contours as the 0.5m contours.
I am going home now to use my home computer and see if it can handle all these files xrefed and then bind and explode.
Worst case in make another program to extract only the contours and insert into a blank database. Always difficult when not given raw lidar point files.
Total size for these contour files combined is 327mb.
We have microstation capabilities not sure if it can put in the file in an easier way. I can work with the xrefed bogged down file. But is there a way to only export what's shown ? I have frozen the layers for all other objects from all the references.
I estimated total points from contours will be 20 million. Since each generate about 50000 points. Which is still workable. The computer i use in the office just make this more difficult. Slow cpu. Difficult day. Spent 7 hours programming and got it figured out but didn't solve the problem. I should have known better 20 points are not enough to generate that look in the 0.5m contours.
Civil 3D 2012
Work: Xeon W3503, 12GB, Quadro 2000, Dell P2211H x 2
Home: 3930k, 12GB, GTX 590, U3011, QX2710
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Feb 11, 2013
I'm working on a topo survey and the contours are crossing each others (See attached pic) and what I did was edit the surface by adding points. I know that these points are fake, but how does this affect the terrain surface for design point of view? I did try swapping edge and deleting lines but makes it worse. Also as you can see in the pic, I don't see the added points like it did back C3D 2008.
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Nov 7, 2013
How to start pit excavation on a contour surface ?
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Apr 21, 2013
Which is better to do: contour smoothing or surface smoothing? I did a little test with a surface with no smoothing, a surface with contour smoothing set to medium, and a surface with surface smoothing. The results puzzled me. The contours in the surface with no smoothing matched the contours of the surface with surface smoothing. The profiile of the surface with no smoothing matched the profile of the surface with contour smoothing. Are these results typical? I was surprised that the contours of the surface with surface smoothing didn't look smoother. I was also surprised that the surface with no smoothing and the surface with contour smoothing generated the same profile.
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Jul 28, 2011
I would like to create surface from contours and extract points (with value) from on it. I had contours in my drawing; each major and minor contours are single polyline with elevation (Z value).
If I create surface form CONTOUR, some polylines (major or minor) are not included in to surface. After the creation of surface, I tried to erase the existing contour lines (Polyline) from drawing but the surface will be disappearing.
If I create the surface from ''DRAWING OBJECTS'', I'm not able to select the polylines (attachment 01) .
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Oct 24, 2013
I have this contour lines from dwg file (see attached) and I am trying to make a surface out of it. Initially i thought it is already a surface for C3D but i cant seem to follow tutorials. While browsing for solutions from the Internet, it seems it is not even a contour file that can be added in C3D. what is this file and how i can convert it into a surface in C3D?
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Nov 6, 2013
How to use the Surface Contour Label Group class in the .NET API.
My first guess was that I had to create an instance object of the class and name it, and then use a "Create" method (e.g., CreateMultipleAtInterval) from there, like this:
Dim labelgroup As SurfaceContourLabelGroup
labelgroup.CreateMultipleAtInterval(arguments)
However, this doesn't work, as Visual Studio told me "Warning: Access of shared member, constant member, enum member or nested type through an instance; qualifying expression will not be evaluated."
I tried just saying:
SurfaceContourLabelGroup.CreateMultipleAtInterval(arguments)
But that didn't seem to work either. How this class works and get it to add some contour labels to a drawing?
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Mar 2, 2012
I created surfaces in Civil 3d 2011 for existing and proposed and I did a surface volume between them. Is it possible to create a specific contour in the volume surface that represents the fill volume elevation (daylight line I think)? My proposed surface is a flood water elevation and I need to define the boundary at that elevation.
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Jun 20, 2012
Is there a way for Civil3D to create/generate/extract a contour of a specific elevation such as 105.53 from an existing surface?
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Mar 29, 2012
Is there a way to weed the PI lables of an alignment. so that no all vertices are labeled, short of the ctrl-select method?
C3D12-13
Win7x64 6gb
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May 31, 2013
I have been creating contour surface labels, which utilize a 3-point contour label line with grips to adjust, and this is my question:
when i create a single contour label, clicking specifically on a contour i want labeled, the contour label line with the 3-grips extends beyond several contours and thus places a label at every contour it touches. i can manually fix this by shorting the line, but this seems very inefficient.
1. is there a setting to have the label only placed on the center grip of the three?
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Jan 23, 2013
I have my existing surface data referenced into my production drawing. I am trying to label the existing surface contour lines in the production drawing. I only have one surface in this drawing right now, so, I don't believe this is a multiple surface issue.
When I try to add single and multiple contour labels to the existing surface, I cannot select a contour line. I try to click on a contour line, using osnap, and I just keep getting prompted to pick a contour line.
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May 13, 2013
When I label my Contour lines there is a blue line(perp) running right thru the middle of it.
I have looked to take it off but can not find it.
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Apr 24, 2012
It happens during many different commands. The command itself doesn't seem to affect this problem. It doesn't always happen, but every so often, as I'm in the middle of a command, when I scroll past a contour line the program freezes. Sometimes it comes back to life after a few seconds of thinking, but sometimes it just sits there non-responsive forever.
Possible ideas:
-Contour Labels set to "Mask Contour Line Only"
-Dynamic Inputs on
-Selection Preview is on (but it's disabled for "When a command is active")
-Surface is shortcutted into the drawing
-Contours are from an XREF
Civil 3D 2013
64-bit HP Desktop - HP Z420
Intel Xeon CPU E5-1620 0 @ 3.60 GHz
24GB RAM
AMD Radeon HD 6570
Windows 7 SP1
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Nov 16, 2012
The contour lines themselves are in model space. The contour texts are in paper space. How do I make the line hide under the text?
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Feb 23, 2012
How does a 97 contour pass through a closed feature line with elevations between 97.3 and 97.8?
C3D 2011 (latest updates)
Win 7 Pro, 64-bit
16 GB RAM
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Dec 11, 2012
I needed to remove a feature line that I used as a break line when creating a surface. When I removed the feature line from the definition of the surface, the grading did not change. It appears the points created by the feature line remain which is why grading didn't change. The only work around was to delete these points.
I noticed the same thing happens when I removed the surface boundary and inserted a new boundary. why these points remain and how to remove when I delete boundary and feature line from surface?
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Jun 3, 2013
I have a couple of questions regarding surface volumes/analysis in Civil 3D 2014. First, there used to be a way to determine the volume between two surfaces without creating a volume surface. The command is _AeccReportSurfaceVolume, but I can't find it on the ribbons in 2014 to save my life. Do I need to create a new button myself?
Second, and more important, dealing with the elevation analysis in 2014, and noticed that the colors reset anytime that the volume surface is rebuilt? It has always been annoying not to save a color scheme, but at least once you had set it up, the colors stayed as the surface changed. Is there a new setting that I am missing, or is this just a glitch with 2014?
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Aug 21, 2012
How do you apply certain contour label styles to certain surface styles (i.e. When I have an existing surface i want the default contour labels to be an "existing contour" style). Right now the default is a "finished contour" label style for all surfaces.
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May 28, 2013
I have a surface profile which has 2 surfaces in it. The surfaces overlap, and where there is overlap I just want to show one surface. Right now it looks like I'm going to have to smack a new boundary on the one surface to clip it, but I thought there might be a way to limit the display range of one surface in the profile.
Right now, I've only figured out how to do this so both surfaces are limited to the same range, but I can't figure out how to do it if you want to just control the range displayed of one surface and show all of the other surface.
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Oct 30, 2012
I have a project I designed and grading plan is almost done. My proposed surface lables read as 1256.50. How can I get them to read just 56.50? I have a FG surface I created and am labeling using surface elevations. I am running out of room and need to free up some space. I don't want do drop my surface 1200'.
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Jun 6, 2013
I am looking for either a corridor style or surface style to display slopes while in plan view while working on a corridor. I know you can turn on slope arrows as a surface style, but I am actually looking for the grade to be displayed next to a slope arrow. Hopefully I am explaining it properly.
I just am looking for a better way to spot errors before putting surfaces into machine control without checking station by station in the section editor.
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