I am working on three different projects at once. For each project, I was sent a drawing with contours as polylines. Each contour is broken up into polylines about fifty feet long each at elevation 0. I am trying to set the polylines to proper elevation without editing each one individually. Each drawing contains several hundred polylines to modify. I was hoping for some sort of way to use a fence and interval (2') with a starting elevation.
I've searched the internet but haven't found a lisp routine to do this. I thought I remember Land Desktop having something like this, but can't seem to find it in Civil 3D 2012. I have found several threads asking the same question. Each time the poster was referred to a blog 7629. That blog unfortunately seems to have been taken down. If I can’t find an answer soon, it looks that my best option would be to retrace each contour which makes me glad to be paid hourly.
I have a sinusoidal curve, that I've created using a third party app, which has worked really well. But the app only produces the form in a straight line and i now need to fit it to a number of curves.
I have a form of 3 radii and a couple of flats, which the sinusoidal form needs to fit along. All this work is just in 2D as i need to output the dxf into a CNC machine.
Due to modeling purposes, I need to convert a 3D polyline to a spline. What I have been doing is:
- change polyline fit/smooth to cubic from properties - convert polyline to spline by typing spline -> object - method -> fit from properties
You can see the original 3D polyline (green) and the resulting spline (magenta) in the attached drawing.When I zoom in and measure the distance between the two entities at different points along them, at some points the perpendicular distance exceeds 5 millimeters, and I want to ensure the deviation remains under 1 millimeter or even less.
I know I can change the knot parameterization of the spline, and this does work at some locations, but the difference increases at others.Why is there a 5.6 mm difference between the spline fit point and 3D polyline vertex, as measure in the attached drawing?
Now, I can go and manually stretch the fit point to coincide with the vertex. Also, I can add fit points between existing ones to drag the spline closer to the original 3D poly.
However, some of my polys are really long, and it is very time-consuming to do this manually while measuring points along the entities to make sure the distance stays small enough.
how to automate this process? For example a lisp that would maybe take the original vertex points, add say maybe 3 (not too many) new ones between them, and then generate a spline while making sure the deviation is less than the set value of 1mm? I am using AutoCAD 2013.
I've been working on a custom polyline object, and I've got it functioning!!Having said that, I plan to run its creation around picking a point for bounary selection.
(Other than trying to step through every vertecies) is there a technique I can thow the polyline data from a traceboundary result into my custom object? I've been trying to add the polyline from traceboundary to my object BEFORE it's added to the transaction by the way...I assume that's right, since I want to put it's data in my custom object then add my custom object to the transaction instead.
When generating a line of contour labels with Contour-Multiple, most of the labels are orientated properly but some of them on the line are rotated 180 degrees. Why aren't they ALL orientated in the same direction?
Also, sometimes, all of them will be orientated in the wrong direction such that they are, essentially, upside down. Is this a bug or is there a setting to adjust?
I have recreated two surfaces for my design, existing and proposed. I had used polylines for contours for in each surface. I tried labeling the contours but it will not let me select the contour itself.
I then tried to make the contours to 3d polylines and again added them to the surface and rebuilt. I still am not allowed to label the contour since it doesn't let me select the polyline. I am able to select the surface however.
When I create a grid from our OSIP DEM files the contours come in as a block. I usually do 1' and 5' contours. I would like to break these so that when I select a 1' contour it will show up individually with elevation data still attached. If you select one now, it selects the entire grid. If you explode it, you lose the grid file. Is there a way to do this or will a just have to label the contours so I know where I am at?
I am using Civil3D 2012 and have a drawing that will not allow me to add Contour Labels.
Unable to create contour labels
Issue You were unable to create contour labels. When you tried to create a single contour label, you could not select any of the contour lines of a surface. When you tried to create multiple contour labels, the contour label line disappeared after you selected the second point.
I have a client that just started using C3D 2010. When I sent him a topographic survey with contour lines (I am also using C3D 2010) he called me and asked if there was a way to select an individual contour line and have it display the elevation in the 'properties' dialog box. I have not been able to find an answer for him.
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.