AutoCAD Civil 3D :: Interpolating Points From A Surface Based On The Sample Lines

Jul 21, 2013

I wanna interpolate points from surface but only in that area where my sample lines intersecting with the surface. There is a point creation tool that makes this based on polylines but I have to many data and it will get to much time to do this. So, for better understanding I attached some pictures, in the first picture it is shown the final result which I have made based on polylines, but here is also a problem, the tool is not putting points where the surface is changing ( on my second picture I highlighted with red circles). 

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AutoCAD Civil 3D :: Create Points At Surface Vertices Along Sample Lines

Jan 9, 2013

I need to create points with surface elevations along sample lines. The points need to represent the verticies one would see in the section editor. I've attached an image of my section editor for one of my sample lines. I need to create points that represent these 24 verticies along this sample line and do so for the rest of my sample lines as well. Is there an automated process to create these points?

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AutoCAD Civil 3D :: Assigning Elevations To Line Of Points Based On Surface?

Sep 11, 2013

I have a surface made by a wide array of points and a line of points that i need to use that surface to assign elevations to ..

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AutoCad :: Interpolating Coordinates From Poly Line Other Than Input Points

Jan 17, 2012

I have coordinates for an aerofoil which I put into Autocad and plotted using pline. I have 52 points, what I want is to have more points on the aerofoil, i.e interpolate. I can probably create more points by averaging two adjacent y-points and two adjacent x-points but it would be much better if Autocad did this

the LIST command only gives the points i put in the program.


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AutoCAD Civil 3D :: Sample And Extract Elevation From A Surface

Feb 27, 2012

I just got a topographic map of some land we plan to develope, and would like to work out some preliminary earthmoving analysis.

I would like to sample that surface at very specific locations --  I could produce the required points in PNE format.

What I want is to find the way to: (1) import those points, (2) sample elevation from the surface at those locations, and (3) export the 3D poitns in PNEZ format.

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AutoCAD Civil 3D :: Sample Line / Surface And Cross Sections

Nov 22, 2013

I'm working on cross sections and ran into a problem.  I had to edit my surface but it wouldn't cooperate with me.  So instead, I just erased the whole surface and restarted it.  After I got my surface the way I like it, I added my sample lines to where they are supposed to be.  Problem is, my cross sections turned out blank.

So for now, I skipped to create a surface profile and see both of my surfaces available on the bottom.  The old one I deleted and the newly created one.  It won't let me go to the bottom and erase the old deleted surface.  When I go into my only shows my newly created surface and nothing more.  Is this a reason why my cross sections come up blank?

I'll show you a pic of my toolspace with just the current surface and another pic of the "create a surface profile" showing that it still has both the old and new (all in CAPS) but it won't let me delete the original.

HP Compaq 8100 Elite
Win 7 Pro SP1 - 64Bit
i7 860 @ 2.80 GHZ
AutoCad Civil 3d 2012 SP1

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AutoCAD Civil 3D :: Sample Lines

Jul 3, 2008

I'm trying to create sample lines at sta. 0+58, 1+08, 1+58, 2+08......................

My alignment begins at 0+00.

In the Create Sample Lines - By Station Range I set the From Alignment Start?end both to false and set the start and end stations as 0+58 and 20+58 respectively. The 0+58 sample line plots at 0+58 but the rest of the sample lines plot at even 50' stations (1+00, 1+50...).

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AutoCAD Civil 3D :: Large Surface - Converting Points To Cogo Points

Mar 5, 2013

I have a large surface (over 1.5 million points and 20 000hectares)

I need to get a point file .csv from the TIN to be able to use it in another program.

-so i've extracted the points from my surface, but they are Autocad points.

-next step is to convert them to civil 3d points.

-I can not select them all when converting them or my computer crashes.

-so i select about 25 000 at a time, the converting takes roughly 10 minutes.

and i have over 1.5 million points to do.

how can i speed this up.

will more ram useful?

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AutoCAD Civil 3D :: Widths Of New Sample Lines

Dec 22, 2013

how to create a new sample line group and a new sample lines within that slg: URL....I have checked what is the default sample lines width  (create sample lines command):

Autodesk.Civil.Settings.SettingsCmdCreateSampleLines SobreanchosSamples = default(Autodesk.Civil.Settings.SettingsCmdCreateSampleLines); SobreanchosSamples = civilDoc.Settings.GetSettings<Autodesk.Civil.Settings.SettingsCmdCreateSampleLines>(); Settings Cmd Create SampleLines SettingsCmdSwathWidths anchos = SobreanchosSamples.SwathWidths; double anchoIzquierda = Convert.ToDouble(anchos.LeftSwathWidth); double anchoDerecha = Convert.ToDouble(anchos.RightSwathWidth);

But how can I put these values (left width and right width) for a new sample line?Sample line class doesn't have "left width" or "right width" property ¿? Do I have to create a new vertex? However I think that I can´t add new vertex in vertex collection.

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AutoCAD Civil 3D :: Add Sample Lines To Specific Group

Apr 11, 2008

How or if you can add sample lines to a specified group? I created a group only to realize that there are some specific stations I need. I do not want to re-create the group and re-assign the materials nor reproduce my volume reports. I just want the section plotted on my sheets.

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AutoCAD Civil 3D :: Cross Section With Sample Lines

Jan 13, 2013

I have my surface, aligment and sample lines created, but I cant get my sample lines profiles. 

The grid apperas without data, it is like I have never selected a surface, but I did ! 

This is what I get , totally empty

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AutoCAD Civil 3D :: Export Alignment And Sample Lines

Feb 15, 2013

I have an alignment with sample lines, I need to export these to a new drawing. i tried export/import land xml, but it did not work.

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AutoCAD Civil 3D :: Why The Sample Lines Don’t Appear On Prospector

Oct 18, 2012

Why the sample lines don’t appear on the prospector?

I’m wondering why the sample lines don’t appear on the prospector like other components such that we can have an access to delete them, for example.

How can I get a list for all the sample lines?

Software: AutoCAD 2014, AutoCAD C3D, AutoCAD M3D, Revit
Windows 7 (Ultimate 64 bits),
Firefox 20.0,
Kaspersky 2013.

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AutoCAD Civil 3D :: Creating Sample Lines At Vertical Curves

Sep 9, 2013

Can we automatically add sample lines at vertical curve points (e.g. BC, EC, Bottom of curve) ?I need to show the sections at these vertical curve key points.

I am using C3D 2011 but could not find that option when creating sample lines in a station range.

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AutoCAD Civil 3D :: Place Sample Lines Along A Very Sinuous Alignment

Jun 27, 2013

Im trying to place sample lines along a very sinuous alignment and about a third of the way down all of a sudden the little tracking marker jumps to what seems like thousands of kilometers away and starts tracking along some invisible alignment which does not exist?

I have tried everything I can think of from every type of sample line creation option to recreating the alignment and auditing the drawing. Nothing I do creates different results. Is this an alignment issue and being cause by all the tight bends?

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AutoCAD Civil 3D :: Sample Lines / Section Views - Unable To Change From Layer 0

Jul 15, 2012

I created sample lines and section views for my road projects. I set all line works to appropriate layers except for "Segment and Points". Cannot change from layer "0".

I right click the existing grade on my section views, click "edit section style", click "display", then change the layer of Segments and points and click "OK", "apply".

Go back to my drawing, verify the layer but  still layer "0". I tried so many times, read the manual, call friends but no luck. I am tempted to "explode" my drawing.

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AutoCAD Civil 3D :: Show Locations Of Cross Section Sample Lines On Profile View

May 15, 2013

recommend a good way to indicate the location of cross section sample lines in a profile view (of same alignment) as vertical lines? the sample lines have been created at user defined locations from polylines, and do not follow a particular station order. my first thought was to use transparent command to draw line in profile view using station from plan view, but i have in excess of 100 cross sections, and that may be time consuming.

Civil 3D 2013 SP1, Win 7-64 bit

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AutoCAD Civil 3D :: Import Point File And Assign Elevation Based On Existing Surface

Apr 12, 2012

I have a bunch (hundreds, so manual input not an option) of X,Y points without elevation data that I would like to import into a DWG and assign an elevation that is based on an existing surface object.  Is there a way to do this for a point file? The command for inserting individual points would be the "Create points - Surface > Random" but I don't see a way to do this in a batch type method where i have my PNE formatted input file to just move the points to sit on the existing surface. 

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AutoCAD Civil 3D :: Sample Line Volume Report And Surface Volume Give Different Quantities

Jun 18, 2012

I'm working with TIN surfaces, doing cut/fill comparisons for a surface mine.

My volume surface statistics show a cut volume of 5167.22 cy and fill volume of 8456.18 cy.

The sample line group volume report show cumulative cut of 5527.67 cy and fill of 8465.56 cy.

What could be some causes of this disparity. All reference surfaces are built from points and use a non-destructive boundary.

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AutoCAD Civil 3D :: Creating A Surface From Points?

Jul 30, 2013

I have a grid survey of points and I've entered these points into Civil 3D.  Now what I want to do is use these points to create a surface so that I can create a slope analysis of the surveyed area.  My problem is that I can't get the points into a point group.  

I have a generic grid (15 x 15) of points set up and I've only used a portion of them (defined by the dimensions of the site).  So I want to create a surface that includes all of the points that aren't set at an elevation of 0.  

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AutoCAD Civil 3D :: Cannot Remove Points From Surface

Mar 29, 2013

I have an "existing" surface built. But there has been some construction since my company surveyed the site. So, my surveyor went out and got the new points in the area of the new construction. I am trying to remodel the "existing" surface without rebuilding the entire surface. I have removed the old (demoed) points from the point group used to define the surface. But, the points are not being removed from the surface.

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AutoCAD Civil 3D :: Extracting Points From A Surface

May 31, 2013

I built my surface by importing points directly, ie, not through the ribbon, so i have no points listed in prospector.  i have been editing the points (mostly deleting errant survey points) and would like to export the final data set.  The only step i found, was to show points in surface style, and then Extract Objects (of which i selected Points).

This seems to have no placed all the points into my DWG, but HOW do I export this files into a single text file??

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AutoCAD Civil 3D :: Surface On Nearly Aligned Points

Sep 12, 2013

I have alignement of wall or embankment. I have existing ground including this corridor river. I have also CSV file with points (x,y,z). On my sketch there is drawn. Points present FDL (flow defence level) maximum level of river in case of huge rain or other things. These are almost aligned. I need to transform it (project) into alignment. I have to create profile of EG, FDL (based on this point) and then create new profile of height of wall or bank. What is the best solution for projecting this points. I tried with grading (distance and grade0%) I tried then with offsetting this feature line based on points and used it as breaklines. Created surface had holes.Even real is worst because alignment is perpendicular in same places to river.

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AutoCAD Civil 3D :: Adding Points To A Surface?

Apr 24, 2013

I have created a surface with a point group.  I have a few points on the edge of my surface that need to be added to the surface.  I can add them to the point group, but when I updated my surface nothing happens.  The triangles don't extend to my newly added points and my profile of the area doesn't show a surface where these new points should be. the new points I want to add have the same properties as the other points in the point group, they are cogo points.  

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AutoCAD Civil 3D :: Surface Creating Points That Do Not Exist

Jan 10, 2014

I am building a surface and started looking at the triangles and found that some are going to non-existant points. I have unfrozen, checked, etc. all of my points to make sure they are not in the drawing. 

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AutoCAD Civil 3D :: Volume Surface Width Points

Apr 18, 2013

What I have is a tin volume surface. I am asked to label the points with the thickness of the volume surface.So where there was survey data on the top layer I need to have the width of the surface at those same points.

Any commands that can make this possible?

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AutoCAD Civil 3D :: Surface Not Extending To All Included Points

Jun 25, 2013

2013 version. Long story short, I am having problems with pressure networks in my drawing so to simplify things I want to just show the top of the current watermain in my profiles because we are not doing anything with the water main, though it needs to be shown in the profile. To do this I created some points where the watermain is and made their elevation 1.8m lover than the existing surface at those points (due to the 1.8m of cover the watermain has).

I then created a surface using those points and an outer boundary surrounding the points. For some reason the surface stops at one point and doesn't continue to the rest (about 5 more points). So when I create my profile the surface stops short. The points are included in the point group the surface uses, and the outer boundary doesn't cut them out either. Not sure why the surface isn't referencing those points.

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AutoCAD Civil 3D :: Creating Surface From Existing Points?

Jun 11, 2013

I have been given a survey on AutoCAD which was orginally 2D with the levels written in text next to it. I changed each point (690) to include the level in the Z-direction. I am trying to calculate volumes of topsoil removal and then cut anf fill volumes. 

So I opened up Civil3D in metric template and imported my drawing as I have not been given a ddata file with the co-ordinates. Unfortunately I am having trouble creating a surface between the existing points. 

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AutoCAD Civil 3D :: Compare Points Perpendicular To Surface

Feb 11, 2012

I am working on drawings where we create dtm's from surfaces, use the dtm for layout, shoot the asbuilt of the final surface, and then compare hundreds of shots to the surface to develop an as-build report.

I want to be able to select a mass of points, compare the perpindicular difference in elevation to the surface, and have an excel spread sheet generated from the results.

My coworkers are able to do this in Terramodel but I am on a mission to eliminate Terramodel from my day to day work.

Windows 7 x 64
Dell Precision M6600 Mobile Workstation
16 GB Ram
i7 @ 2.5 ghz
Civil 3D 2012 SP 1
Civil 3D 2011
Autodesk Inventor 2011
AutoCad Map 3D 2011

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AutoCAD Civil 3D :: Add Points To Surface Not In Point Group?

Mar 7, 2012

Is it possible to add points to a surface without adding them to a point group?  I've got a bunch of ponds I'm doing and it will save me some time if I could just select the points, and not have to put them in a point group then add the point group.

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AutoCAD Civil 3D :: Creating A Surface From Existing Points?

Jan 16, 2013

I am having some trouble creating a TIN from a point layer in Civil 3D 2011. Would the best course of action be to extract the points from the drawing and creating a surface from there, or is there a way to create the TIN around the existing points in Model space?

I'm much better versed in AutoCAD, but excited about furthering my understanding with Civil3D.

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