AutoCAD Civil 3D :: Converting Poly To Feature Line?
Oct 25, 2012
So I am attempting to create a simple grading daylight. I began with a 3D Polyline that has only 2 verticies. When I "Convert Feature Lines from Objects," it creates a feature line with 4 verticies. The 1st and last have the initial elevations from the 3D Poly, but the 2 new verticies seem to be pulling elevations off the surface below where I am working.
My questions are: 1) why are new verticies added? 2) can this be prevented?
I know that I can overwrite the slopes in elevation editor, but this seems like an unnecesarry extra step.
Civil 3D 2013, HF3.0
Windows 7, 64-bit, SP1
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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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Sep 26, 2013
Is there any way to project feature lines into a profile when the plan view is xref'd? I have my plan view "existing topo" with all existing features/Figures and a existing surface.
My profile is a separate dwg with plan view xref'd and surface a data shortcut. Of course there are feature lines and Survey Figures in the existing top I want to project into the profile, but can't because it is an xref. Besides copying .
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Oct 31, 2013
C3D 2012. I am trying to get the distance from the start of a featrue line to a selected point. My object is "FLobj" and my Point is PT1. I am using the method Get2dDistanceAtPoint. This is the line of code.
(vlax-invoke-method FLObj 'Get2DDistanceAtPoint pt1 'pDistance)
I keep getting "too many actual parameters".
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May 19, 2013
I am wanting to add the name of my feature line to a label style. I am trying to create a label style that will show Lot Number and Area. I know i can create parcels, but i dont want to! I have also created a map table that can do exactly what i want on polylines, but will not work on an xref. Labelling featurelines does work in xrefs.
how to add the name into a label style?
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Jul 11, 2007
Is there a way to decurve feature lines like how we do it with polylines? I am labeling my feature lines but don't want the curve labels to show up
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Jan 7, 2014
I am building a surface and have back of curb, curb face, and curb flowline going around a curve. I cannot create the lines with the usual pline as they will cross due to poor field collect. I created the curbs with multiple arcs. I was then going to change them into Feature Lines and am wondering if I can then use them as breaklines in a surface.
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Mar 1, 2013
I have a roadway alignment with FG profile and I want to place a feature line on the roadway centerline that represents the FG profile elevations.
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Apr 11, 2012
We have cooridors with features such as terrace drains and flowlines, but we cant seem to get the linetypes to show up correctly. For example a flow line should have arrows but it shows up without the linetype and looks continuous.
LTSCALE =1
MSLTSCALE=1
PSTSCALE=1
DRAWING SETTINGS - 1"=40'
CIVIL 3D 2012
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Jan 7, 2014
I am building a corridor with the right side of the pavement fitting to the existing surface.The subassembly used to link the edge of pavement to the existing ground is LinkSlopeToSurface.
On the corridor created, the feature line (code P2) of the corridor surface (top) starts from the station 0+025, instead of 0+000.
I was wondering why there is no feature line P2 for station range 0+000 to 0+025? Does that mean the linkage to the existing ground surface not exist for the slope defined in the subassembly?
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Mar 25, 2013
We are running Civil3d 2012. When converting a line or 3d poly to feature line, or just creating one it adds elevation points where it crosses surface breaklines even if you do not assign elevations. We want the feature to just have 2 elevations. The beginning and end. Is this a bug? Or is there another setting somewhere?
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Sep 4, 2013
I created a label for retaining wall that takes the z value from the start and end of a feature line. Works great except that it isn't dynamic. I have created the feature line in a grading sheet where the surface is data shortcut into it and I'm just using grips to make sure the ends are on the bottom and top of the retaining wall. Is there any way to dynamically pin/tie the feature line to a surface that has been data shortcut?
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Apr 6, 2012
AutoCAD C3D 2012 has been crashing nonstop over the past 3 days on me whenever I try to "Create a Feature Line from Object". I know that it is a localized problem as a co-worker has been in the same drawing and done grading work without any problems. The error has occurred in multiple drawings.
Product Version: F.107.0.0. AutoCAD Civil 3D 2012 SP1
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Jul 15, 2013
is there a way to draw a line in the profile view and create that line into a feature line? and if there is can i project that line into the plan? i know that you can make a feature line in the plan and project that feature line into a profile view, just wondering if you could basicly do the reverse. i don't want to make a coridor.
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Apr 19, 2012
I Created a Feature Line from Objects (a polyline). I added it to Site 1, gave it a name, layer. Do I Assign elevations during creation (conversion options)?
I set the Elevation to 8.5 (NOT From surface)
Then I go to
Modify Feature Line -
Elevation Editor.
Why are the elevations locked? I want to set them.
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Oct 15, 2013
Why do they do this? I am trying to quick elevation edit a featureline but my edit glyph jumps to a completly different featureline that is near.
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Apr 11, 2012
why this particular FL has this type of a display?
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Jul 28, 2011
I often use feature lines for parking lots and ponds. They're great when they work, but they drive me NUTS when they don't - which is a lot of the time. For parking lots and ponds, my feature lines usually close back on themselves. That's when I have trouble breaking the feature line. When I use BREAKFEATURE, I choose two points and this should, in theory, leave a gap in the feature line between those two points. That's not what happens. I end up with a huge gap between the first point I picked and a vertex point 5 or 6 vertices away. It doesn't matter where I pick the breaking points.
I've also tried TRIMFEATURES. I draw lines across the feature line where I would have chosen the breaking points. But the portion that I want to remove is the portion that always remains. It doesn't matter where I select the feature line to be trimmed (inside or outside of the cutting edges).
I think there may something wrong with the feature line itself. Sometimes, if I erase the original and draw a new one, it will trim just fine. But that's such a headache, and it doesn't always work. If I knew what was causing the feature lines to go squirrely, I would aviod it. Unfortunately, it seems like breathing the wrong way can screw up a feature line.
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Jul 12, 2013
I was wondering if there is a way that I can take an existing grade surface and apply a designed pond surface.
Right now I have the pond as a set of 3d Polylines in the proper geometry.
I want to place the pond into this surface and cut/fill at a 3:1 from that pond to the existing surface.
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Mar 26, 2012
I have a problem about creating feature line. When I want to create feature line between two red points, another point come into being by itself (blue point). If you look at the file I have attached, you will understand well what I want to express. I cant make any changes on this point. I cant delete, modify etc.
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Oct 22, 2012
I have a complex grading situation with a sewer near a drainage channel. Long story short.... I need to somehow look at my alignment section by section and try to establish a feature line that will represent my proposed top of slope. There are a ton of different constraints that I will not go into. My ultimate need is the ability to establish a feature line or 3d pline from the section view. I know that this is somehow possible via corridors. Im working with just an aligment and cross sections at every 25 feet. Is this possible?
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Jun 12, 2013
We are working on a road widening scheme where one edge of the road is retained as far as possible while other edge being widened. I like to design a retained channel line by extending the cross fall between the existing center line and the exiting channel line on to the design one.
It is possible in civil 3d to extend the gradient between two feature lines at some offset from reference feature line?
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Apr 6, 2013
I've been researching the options to deal with tessellation of my corridor. I see the option to extract feature lines from the corridor and to maintain a dynamic link.
I've now found a link in the docs for converting tessellated lines to arcs. Can I use this command with a dynamically linked FL? And will it maintain the dynamic link? [URL] ....
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Nov 12, 2013
I am drawing a few feature lines within my surface and it is creating split points.....not even sure how they are created and how do I get rid of them....is there a way? I read a little about them and what I have read so far indicates that it is a point where two feature lines cross? I don't have another feature line created anywhere near this one.
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Jul 13, 2011
Feature lines are easy to make and great for grading. However, when I try to save the drawing into *.dxf, all the feature lines disappeared. Does this mean DXF files do not take feature lines?
I need the DXF files to up load into GPS. Do I have to redraw everything in 3D polyline?Or is there an easier way to convert feature lines into 3D polylines?
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Jun 24, 2013
I would like to know how to get the feature line information using lisp?
At this point I'm looking for the angle between the end point where I pick the feature line.
My goal is to rotate the crosshair to match the feature line. I can do this with a line or polyline.
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Jul 17, 2012
I have a rogue feature line that I do not know where or why it appeared from. (Somehow it is a duplicate of my curb line, but offset.)I cannot delete this feature line. It is not applied to any surface as a break line, but when I go to delete it, it freezes autocad.
I have done all the basic steps of purging, audit, recovering, even tried mapclean and I still cannot delete it.
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Mar 23, 2012
I need to start a Feature Line at a point on another Feature Line 0.100m below the beginning of the existing Feature Line.
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May 16, 2013
I have a corridor with the two daylight points marked as BOUL BOUR.
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Mar 21, 2012
I am trying to extract feature lines from my road corridor to use as breaklines, and I don't see a center line crown feature line. I have no problem extracting edge of travel ways, etc. but not the crown of the road.
Win 7 64BIT
C3D 2013
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Oct 9, 2012
I use the create feature lines from object command from the Survey pull-down menu and choose a "Associate figure survey point to vertices" I get a survey figure that uses point elevations at some vertices and 0 at others. However, if I use Create Feature Lines from Objects under the Grading pull-down, and use a surface made of just the points, I get a a figure with all the correct elevations.
I checked the vertices where the survey figure drops to 0 and the line is snapped to the point, distance = 0.0000. What gives?
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