AutoCad 2D :: How To Convert Polylines To Polygons
Sep 20, 2012
On my file I have some polylines that are the streets. So, they look like rectangles and curves, etc. I am working also on a 3D Model, and what I have to do next is to extrude them. The problem is that those polylines are not polygons, and so, they are not solids when I extrude them. I tried to use the command BO but it says that the lines are not closed, and I checked with OSNAP and they are! Is there any way to convert those polylines into polygons?
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Oct 9, 2013
How to draw 3D polylines, or convert single lines to polylines?
this.JPG
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Oct 17, 2007
While exporting polylines to polygons as an autocad shp file I get an error when trying to open the file in ArcExplorer 9.2 Java edition. The error code in an invalid field length in the dbf file. Is it specific to Autocad map export issues. The attribute table is an Access file (link template).
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Sep 11, 2012
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.
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Jan 4, 2012
How can i convert more polylines to one?
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Dec 22, 2011
I've create a large scene with a lot of mrPoxy trees. I realize now that I need a velocity map and some volumetric lights for post, and the scanline render seems like a better option. Is there a way to get these mrProxy objects to render with the default scanline engine without changing there position?
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Aug 29, 2012
I am building a compass rose by using the star tool with 4 points and adding straignt lines from the end points to the corresponding end point. Ultimately, I'll replicate the whole image with some scaling, copy it 3 times, and rotate each 22.5 degrees to create the final rose.
I want give some 3D effects by shading half of each point on the star but it's actually a polygon (the star) with a straight lines splitting the points. To shade I need to have the star actually be 8 triangles that I can fill (4 of them).
Other than tracing to create one of the triangles (and then do some replacation and transforms to locate) is there another way to convert to star polygon and the straight lines into the triangles?
Using CS5.
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Nov 27, 2013
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.
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Oct 10, 2011
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...)
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Jun 25, 2011
I've got ObjectIds of a bunch of arcs that I need to convert to polylines for further processing.
I was thinking of using the COM interface and sending the PEDIT command and converting the arcs.
The only problem is I don't know of a way to put the objectids into a selection set, then call the pedit command and use the previous selection.
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Jul 15, 2011
how to convert a bunch of lines into one continuous polyline?
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Jul 1, 2013
is there a way to change a lofted surface into a polygon?
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Aug 26, 2011
There seem to be some errors in the code for Modify > Convert > Displacement to Polygons with History. My scene uses an animated displacement map, coming from an image sequence. The displacement works as advertised, but I keep getting execution errors. Here is the code for the offending expression, which was created silently when I issued the conversion command:
if(!Disc1_MeshShapeDisplacement1.disableDisplacementUpdates){
updateAnimatedDisplacement( "Disc1_MeshShape","Disc1_MeshShapeDisplacement1","displacementShader1.displacement");
}
//Setting the following attribute here dirties the mesh so Mental Ray updates properly
Disc1_MeshShapeDisplacement1.featureDisplacement = 0;
//The next two lines cause the expression to trigger when editing attributes that affect the displacement
float $dummy = displacementShader1.displacement;
Disc1_MeshDisplacement1.inheritsTransform = true;
The only way I can stop the constant error messages is to comment out the code or disable expression evaluation.
The error messages are annoying, but I can live with that. The real problem comes when I try to select keyframes in the timeline. I shift-drag across keys to select them, and they highlight at first, but then the highlighting immediately goes away. I am forced to use the Dope Sheet instead. Disabling expressions doesn't work, so I don't know if this problem is related to the displacement expression or not.
Displacement in Maya has a very bad reputation, and based on my experience, it's well-deserved. Another issue I have is that after conversion with history, multiple shape and transform nodes are visible in the Outliner, and it is not clear what's going on. The documentation for this feature is only two lines long, and does not explain anything. Apparently there is a pre-displacement shape and a post-displacement shape in the scene, sort of like how nCloth has an input and output mesh. But with displacement w/ history, users get no guidance on how all of this is supposed to work.
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May 18, 2012
I have a contour set created using polylines and I want to convert this to points. Can I do this in AutoCad 3D Map?
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May 6, 2013
I want to turn this shape on the left, into one like the one on the right... i.e., not so many points.
I basically want to convert the polylines into arcs or something. i can do this by redrawing, thats no problem, but this is a very simple drawing compared to what i normally have to deal with, this is just an example.
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Oct 13, 2013
Is there a method of converting ellipses to polylines?
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Jun 5, 2012
how do I convert a section that I created using an alignment and surface into a polyline. I want to be able to manipulate and easily use the section for another program.
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Feb 4, 2011
How do i convert a series of polylines to one closed polygon (so i can calculate an area, hatch it, etc)?
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Mar 17, 2011
I need to convert all polylines on layer to blocks. Each polyline gets replaced with a block that is near the approximate center of polyline. it can also be at the first or last node of pline. or just near the center. (polylines are rectangular).
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Jul 1, 2013
I have a drawing that started as a pipeline network and am trying to easily convert the pipes to polylines or something of the sort to export to shapefiles.
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Nov 1, 2012
On several occasions I have had to convert a group of lines to polylines but had to select and convert each line one after the other. Instead of one after another is there a way or a command to select all the lines and convert them as group into polylines?
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May 22, 2012
I have many segmented polylines that I need to turn into arcs. See the attached image for the method I use to create an arc from a single polyline. I need to do this to thousands of polylines. Does some other method that can do many polylines at once?
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Sep 15, 2011
is there any possiblity to convert the Polylines containing object data to a 3D Solid so that the object are also copied?
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Dec 14, 2011
I don't know what is going on but it is getting on my nerves. I created an OBJ file for my Glock model that I'm working on and re-imported it into 3ds Max to remove any five sided polygons. 3ds Max fixes them automatically this way. This fixed model won't export as an editable mesh, it gets stuck on "preparing polymesh for poly export" and I have to ctrl/alt/del to shut the program down. After some research, a few boards say to change the mesh to a poly. Tried that and I have random black polygons appear and I don't know what to do to fix it. I've attached both the file and an image to this post. The glock on the left is my original model and the one on the right is the OBJ I imported to have four sided polys throughout.
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Oct 31, 2012
In autocad 2013 is the best way still to convert data you have connected to, for example a shape file, as feature data in order to convert that into polylines and text is the best method saving it all as a seperate drawing using the "save as autocad drawing command"? Is there way to do it individually in the current drawing so that I do not always have to be saving things out as seperate drawings and then copy and pasting them back into my working drawing?
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Oct 16, 2012
I drew a cube using polylines by changing ucs. I want to join the polylines so that the cube contour becomes one single object.
Since the lines are in different planes I can not join them. How could I unite those 12 lines so they become a cube non solid(I plan on placing a sphere inside some of the cubes and then use "shade" for visualization so if the cube is solid I won't see the spheres).
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Feb 10, 2012
I need a function that allows to convert the polylines selected with a width globalize defined in a double closed line (spaced by the same width of the polyline), with a hatch inserted automatically defined.
Brilliant idea to draw raceways quickly: instead of making handmade double lines, connect, enter the hatches all by hand, you could quickly draw the polyline with width identical to the size of the duct, and then the lisp transform it into a duct more aesthetically pleasing if compared to the full polyline!
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May 9, 2013
When converting metric 3d polylines to feature lines with units set on metric, drawing properties metric and using the australia/new zealand settings and command "create featureline from objects", for some reason the resulting 3d featurelines end up imperial?
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Jan 2, 2014
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.
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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.
I have access to AutoCAD 2004 or 2005LT.
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Feb 13, 2012
I'm working with a SHP file that contains 56,000 polygons, but I want to export 18 of these that are relevant for my area. Is there an easy way to do this if I create a filter based on a unique data field?
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