AutoCad :: Converting 3D Polylines To Polylines With Elevation?
Jan 20, 2006
Is there a way of converting 3d polylines to polylines with an elevation?
I have a dwg of contour information, the contours are 3d polylines, because they are contours the z value is constant all along the line, so there no question what the elevation of the polyline would need to be.
I need to do this as I then need to import the dwg into a GIS programme called MapInfo whch doesn't read 3d polylines.
As the above mentioned, I have a drawing drawn using polylines with width from someone. The width of the line are suppose to represent area,
To put things into prospective, here is an example:
The polyline is 10 unit long and with a width of 2 unit wide. If i explode that polyline, it will become a single polyline without width. The line are suppose to represent 10 unit long and 2 unit wide; representing an area.
My question is is there a way to change the line above directly from polyline with width to a close polyline (4 x polylines) of 10 unit long and 2 unit wide.
is there a way to get a group of 3d polylines to elevation zero all at the same time. a 300 foot long 3dpoly i have might have a couple hundred grips on it.
I am producing concept earthwork designs using road layouts and plot pads. For speed I use 2D polylines set at an elevation as breaklines for the plot pads and with the generated corridor surface produce the FG surface to generate final contours and earthwork volumes. I find this method quick enough that a variety of options can be explored quickly. Q: Is it possible to dynamically link the road profiles as per the intersection wizard, but without creating an intersection? Q: is it possible to link the elevation of the 2D polylines used for plot pads to a point on a road corridor such that if the corridor changes then so doed the elvation of the plot pad.?
I have some polylines that mark the edge of roadway and around the curves there are arcs in the linework. How do I turn the polyline with arcs in it into a polyline with vertices, say, every .5' or so along the curve and turn the curve into a polyline? I tried the pedit and using decurve but it doesn't work well.
I've been sent a series of CAD drawings in which the author has used global width to define the appearance of features. I need to import this into our GIS, which for reasons too complex to bother with won't import any attributes such as width. I don't want to lose the information recorded so was wondering if it's possible to create a closed polygon to represent the shape of the line. I guess something might be possible using buffering, but I can't figure out how to use the existing line width.
I need to be able to convert "polylines" (as opposed to "2d polylines") to 3d polylines. Here is the issue: the polylines that I want to convert have object data attached to them and they are at the proper Z elevation. When I use the "Convert 2d to 3d polyline" function, the conversion does take place, but all of my object data is removed from the object. And since one of my attributes reflects the overall elevation of the object (which all of the verticies will be the same elevation - even though it will be a 3d polyline), there are too many objects to individually update the attribute information when I am pressed for time.I am working in Civil 3d 2010. Any way to do this using Civil 3d?
Any program or routine in lisp or net that can select a group of 3d polylines in the form of a tin and convert them all to 3d faces?
I know that I can take the 3d polylines and explode them to 3d lines. Then I can use map clean to delete the duplicate lines. Then I can create a C3D surface using the 3d lines. Then I can extract 3d faces from the surface.
Over the past year I have been working on quickly generating vertical cross sections through 2D lines. I have exhausted all of my connections with fellow AutoCAD users and I still haven't found an efficient solution.
The material I'm working with is a bunch of polylines that kind of resemble branching tree roots from dozens of trees. The polylines sprout from seed points and then branch and cross each other as they move down. I need to generate many vertical sections through the lines. Since the material is composed of lines a slice along a plane would only generate points. I need to take a slice of a volume of lines so that the paths are preserved.
I have tried creating two vertical parallel planes and then using the slice tool on each plane. This would break up all of the polylines at the intersection with the planes so I can manually delete all segments that are not between the planes. This is time consuming, and also leaves room for error when manually deleting line segments.
The ideal tool for efficiency and accuracy would be Section Line. I could create a section line, convert it to a volume, and generate a 3D section with the option to save the section to a new file. The problem with this is that the section tool only works on solid 3D objects. I have considered sweeping a small diameter circle along each polyline to give them volume, but this would take days to weeks of work.
Is there a better tool or method for creating 3D sections of a volume of polylines? Are there any tricks that can be used to allow the 3D section tool to work with the polylines? Maybe I could convert them to a different type of object.
I have a drawing that is a topigraphical survey in 2D its constructed of 2D polylines, I need to convert these to 3D polylines so I can add a Z vertex then move the lines/contours to their Z value currently illistrated by text on the plines.
change the line types and easily move the lines to their correct Z value?
I have drawings at the moment where I need to convert some lines to polylines. I know you can use PEDIT and PEDITACCEPT=1 but i want to match properties at the same time.
Just wondering if there is a comand or lisp routine that duplicates the MATCHPROPERTIES command but converts lines to plolylines at the same time, this way all i would need to do is type in the appropriate command and select my source polyline and get multiple duplicate polylines by clicking the lines I wish to change?
In the ipt. sheet metal file, we create the flat and export face as a dxf file to use in our cnc software.
The problem is that our shop guy cannot open the dxf in the cnc software (he gets an error) unless we open the dxf in Autocad and explode it and resave. For some reason, Inventor creates the dxf with the perimeter of the part as a polyline.
Is there a setting that could keep it from making it a polyline.
It is time consuming to have to go into Autocad, explode and resave every sheet metal part.
I have a task of finding the lines which are overlapping on each other (not completely). One Plines start or End point will be on another lines(without snapping). Need to find all those such lines..
We need to take polylines from AutoCAD Map 3D to 3ds Max and rename each polyline to have a name of something like "Building Number-Room Number", both of which are defined in our properties for each polyline. Because none of this data is kept on import to Max, we need to do this all in Map 3D, which we are not experienced with. Is there a way to do this, and if so what? We are importing the .dwg files in Max with polylines as splines.
The Project: Determining erosion setback elevations for hydroelectric requirements: increased water levels due to flooding.
I'm trying to create a DEM from contour polylines that were downloaded from a Government website.
The 2d shp file was imported and since the area in question is relatively small I've set the contour lines to the elevations they represent by hand. Now I'm trying to create a pseudo DEM from them. I need to create a 3d surface and then from there determine a rough idea of an erosion setback at a certain elevation.
Basically, the contour lines are set to 710', 725' and 750', the elevation setbacks are around 720' and 730'. Is there a way to create a surface between the three elevations and then show single solid polygons at the 720' and 730' elevations? And further is there a way to create a polyline at those two elevations to show an approximate setback on a sketch of the area?
How do you draw polylines in different planes? If I set the normal it does nothing. I would like to use polyline2d because you can use bulges and not with polyline3d.
<CommandMethod( "testpline")> _ Public Subtestpline() '' Get the current document and database, and start a transactionDim acDoc AsDocument = Application.DocumentManager.MdiActiveDocument [code].......
I'm trying to automate a simple yet massively tedious task at the moment. Certain layers of my drawings contain 3D Polylines that have to be converted to cylinders. What I need to do is select all 3D Polylines in a specific layer and automatically convert them to cylinders, these cylinders will all share the same hardcoded diameter, however will retain the x,y,z, positioning of the 3D Polylines. The way that I'm approaching i'm attempting right now is to use a selection filter to select all 3D Polylines, save their co-ordinates into an array, create the cylinders using these co-ordinates and then deleting the existing polylines.
Is there anyway to lock the direction of polylines? I have several drawings with diversion ditches. I use the linetype to show the direction of flow but antime I have to change ltscale or linetype, it reverses the direction. This can be an easily overlooked situation and a time consuming one to correct.
I have topo contours that are splines. I want to flatten them so they become polylines that I can give elevation values. When I flatten some, portions of the topo lines become circles.
I believe I have a settings issue for which I am stumped- My polylines are visually appearing grey when I open just this one particular dwg. I have rechecked my layers and plot settings and all seem correct. When I click on the polyline (or any of them) they are on the correct layer and also by color layer and in the properties box - everything seems to be correct. I can draw new lines and they are the correct color - UNTIL I close and reopen the dwg and all polylines change to gray - BUT only visually - the layers still have the correct color and they will not even plot in color.
I'm in search of a way to convert mpolygon objects to polylines in a way so they stay on its original layer. We use Layer Explode (lexplode) from Vianova but it doesn't work with Autocad Map 3D and they are not planning to develop it.
For my project, i'd like to convert Mtext into polylines (or lines or other...) with vb.net (why? because my company is working with laser, and laser can't write text like this, we have to convert it into lines/arcs/splines etc...)
Is there any way to have 3d polylines show a linetype? I need to have my contours that are created as a 3d polyline show up as a hidden linetype. These polylines came from an aerial mapping and have lots of vertices.
We just upgraded to 2013, and one computer is having a weird issue. There is nothing in the drawing. He draws two polylines. When he goes to fillet them, it says they are non-coplanar. The properties palette says both polylines are elevation 0. why this is happening and how I can fix it?
