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In the attached DWG file, a truncated pyramid was drawn with a unit of constants (UCS) on each face. The elevation of one of the polylines is 92.8477 and the other is 0.00, which does not correspond to the observations.

In the following image the green plane lies on the World XY plane while the red plane is above it and tilted. The white polyline was drawn on the red plane by setting the ucs so that it's Xand Y axes were coincident with it. Here's a front view with the World ucs active. Same view but with the UCS of the red plane active. The perpendicular distance from the plane of the polyline to World (0,0,0) is the polyline's elevation. Note that if the polyline is moved by 0.5 in the z direction of the red plane the elevation changes by 0.5. So the anser to the question "Can I change a polyline in my new coordinate system so that it has an elevation that conforms with the World system?" is, It Depends. The UCS of the polyline must be parallel to the world ucs but you would need to also make it coincident to the World UCS!

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These specialized features help professionals work more efficiently, reducing manual work and minimizing errors while ensuring designs meet industry standards. AutoCAD Web: Cloud-Based Design and Collaboration Introduction to AutoCAD Web AutoCAD Web is Autodesk’s cloud-based solution that brings core CAD functionality to your browser. Designed for flexibility and accessibility, AutoCAD Web enables users to view, edit, and create CAD drawings without the need to install desktop software. Whether you’re at the office, on a job site, or working remotely, AutoCAD Web provides secure access to your files from virtually any device. Browser-based CAD access provides the flexibility to work from anywhere, reduces dependence on high-powered hardware, and simplifies collaboration across distributed teams. Key Features and Capabilities of AutoCAD Web AutoCAD Web offers a suite of essential drawing and editing tools that will feel familiar to seasoned AutoCAD users. 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As this trend continues, we can expect even tighter integration between CAD tools, cloud storage, and project management platforms. Collaboration and Data Sharing of CAD Files The future of CAD file management is deeply tied to more seamless collaboration and data sharing across teams, disciplines, and geographies. As projects become increasingly complex and involve more stakeholders, the ability to collaborate in real-time will be crucial. We’re already seeing a greater adoption of common data environments (CDEs) and building information modeling (BIM) platforms that centralize design data, ensuring everyone works from a single source of truth. Moving forward, we can expect enhanced interoperability between software tools, more robust file-sharing protocols, and smarter tools for tracking changes and approvals in collaborative workflows. Automation and AI Automation and artificial intelligence (AI) are poised to transform CAD file management in powerful ways. AI-driven tools can already assist with tasks like layer management, error detection, and standards compliance. In the future, we can expect to see even more advanced capabilities, like automated file organization, intelligent version control, and predictive suggestions for design improvements. Automation will also streamline repetitive file management tasks, freeing up designers and engineers to focus on creative and technical challenges rather than administrative overhead. Autodesk AI is at the forefront of these advancements, integrating cutting-edge technology to enhance the design and engineering processes. By leveraging machine learning algorithms and data analytics, Autodesk AI provides intelligent insights and automation features that are tailored to the needs of each user. Whether it’s optimizing designs, automating routine tasks, or providing predictive analytics, Autodesk AI empowers users to achieve higher efficiency and innovation in their workflows. As AI continues to evolve, Autodesk remains committed to developing solutions that drive smarter, faster, and more reliable CAD workflows. Conclusion Understanding, managing, and converting CAD files are essential skills for anyone involved in design, engineering, or manufacturing. From creating precise drawings in AutoCAD or AutoCAD LT, to viewing and sharing designs through tools like Autodesk Viewer and AutoCAD Web, today’s CAD workflows are more flexible and collaborative than ever. We’ve explored the benefits of converting CAD files to PDF for easy sharing, as well as strategies for turning PDFs or hand sketches into editable CAD files. Along the way, best practices like version control, cloud storage, and careful file management help ensure accuracy, efficiency, and smooth collaboration. As CAD technology continues to evolve, adopting smart file management strategies will be key to keeping pace with increasingly complex projects. Efficient CAD file management not only streamlines workflows but also helps protect your intellectual property and deliver better design outcomes. If you’re ready to take your CAD workflows to the next level, explore Autodesk’s suite of tools and resources, from cloud-based platforms to specialized industry toolsets, to support your next project. The post CAD Files: Understanding, Managing, and Converting CAD Files appeared first on AutoCAD Blog. View the full article

When you draw a regular polyline (not 3D) in a coordinate system that is not the World system, it belongs to that system. Whatever the Z coordinate is for that first vertex, that's the elevation for the whole polyline. In other words, the whole polyline conforms to the XY plane for that system. You can draw a polyline in some random coordinate system, and if the first vertex is at Z=0, the elevation will be 0 no matter what the current system is. (I know because I just drew some polylines in random systems.) If you change the elevation, no matter what your current coordinate system is, the new elevation takes effect in the other, original system--the one it was drawn in. When you draw a polyline in the World coordinate system, and the first vertex is at Z=0, the same rules apply. The polyline belongs to the World system, and any changes to the elevation (or any of the vertices) are applied in World coordinates. Those changes will give you the results you probably expected. On the other hand, if you change a polyline that is not in the World system, you may get results you didn't expect. Your next question will probably be, "Can I change a polyline in my new coordinate system so that it has an elevation that conforms with the World system?" The answer is Yes, if you have Civil 3D. Otherwise you'll probably need to redraw the polyline in World coordinates.

No. I need to update. We're currently on c3d2024. I'm curious, what is "civil site design"? Is this a separate addon? I use corridors, intersections, etc. for roadway design. However, I haven't found anything better for site design than featurelines. If I am missing something, please educate me.

In this DWG file, we have 4 different UCS. where 4 polylines have been drawn, and two of them show an elevation other than zero. I don't understand the value 92.8477 for the elevation. UCS x Polyline Elevation.dwg

You need to post the .dwg and give a more detailed explanation.

Glad it works. Yes.

The black screen happens because AutoCAD 2007 isn’t fully compatible with Windows 10 graphics. To fix it: disable hardware acceleration in AutoCAD’s Options → System, run acad.exe in Windows 7 compatibility mode with administrator rights, and disable high-DPI scaling. Ensure .NET 3.5 and older Visual C++ runtimes are installed. If it still fails, using a Windows 7 virtual machine is the most reliable solution.

Hi thanks a lot. It works. how can i call multiple prior to calling APV? A friend of mine got me this vlx file but there is an annoying pop-up but it works as well addv.vlx

When I create a UCS and draw a polyline using it, the elevation value doesn't make sense when I check it. Can someone explain what this value means?

...Continue from previous post, experiment with imperial mod, quotient, division. ##********************************************************************************************** ## 45 UDF/ Excel name: impaMQD() - Similar Excel MOD() function with optional parmeters, ## return quotient or division [opt_1Quotient_or_2Division]. ## ## Note: This function uses todec() & toimpa() as sub-functions. ## ## Notes with optional parameters: ## ## [opt_1Quotient_or_2Division] = 1 , Similar Excel QUOTIENT() function - Returns the integer ## portion of a division ## [opt_1Quotient_or_2Division] = 2 , division calculation (varDividend/varDivisor) ## ## Optional parameters other than 1 & 2 will return error #N/A ## ## Rev. 1.0 - 9/2/2025 ##********************************************************************************************** =LAMBDA(varDividend,varDivisor,[opt_1Quotient_or_2Division], LET(optN,IF(ISOMITTED(opt_1Quotient_or_2Division),0, IF(AND(opt_1Quotient_or_2Division<=2,opt_1Quotient_or_2Division>0),opt_1Quotient_or_2Division,NA())), varD1,todec(varDividend), varD2,todec(varDivisor), answrM,varD1-(varD2*INT(varD1/varD2)), answrQ,ROUNDDOWN(varD1/varD2,0), answrD,varD1/varD2, SWITCH(TRUE, optN=0,IF(AND(ISNUMBER(varDividend),ISNUMBER(varDivisor)),answrM,IF(OR(AND(ISTEXT(varDividend),ISTEXT(varDivisor)),ISNUMBER(varDivisor)),toimpa(answrM),"Error!")), optN=1,IF(OR(AND(ISNUMBER(varDividend),ISNUMBER(varDivisor)),AND(ISTEXT(varDividend),ISTEXT(varDivisor))),answrQ,IF(ISNUMBER(varDivisor),toimpa(answrQ),"Error!")), optN=2,IF(OR(AND(ISNUMBER(varDividend),ISNUMBER(varDivisor)),AND(ISTEXT(varDividend),ISTEXT(varDivisor))),answrD,IF(ISNUMBER(varDivisor),toimpa(answrD),"Error!")), NA() ) ) )

Or just call MULTIPLE before calling APV.

Since Lee's Code only has you picking a point its easy enough. Just add a call at the end of APV (line 95) to call itself again. This will force a loop that you have to hit esc to exit. - Edit This is a better option. Has undo marks. You could also set your snaps before entering the command if you want to. ;;----------------------------------------------------------------------------;; ;; Add Polyline Vertex loop ;; Dependent AddLWPolylineVertexV1-1.lsp (defun C:APVL ( / ) (vl-load-com) (princ "\nStarting Add Polyline Vertex loop. Press ESC to stop.") (vla-StartUndoMark (setq doc (vla-get-ActiveDocument (vlax-get-Acad-Object)))) ;(setvar 'OSMODE 3) ;End and mid point snaps (while T (C:APV) ) (princ "\nAdd Polyline Vertex Loop ended.") (vla-EndUndoMark doc) (princ) )

So is your question really how to make these loop, keep picking points until you hit enter or escape?

That title does not ring a bell. Are you referring to the Oleson Village Project specifically or another project?

Thanks Lee yes during testing had a stuck loop a few times had to crash out CAD. Will use the full defun rather than the short version.

@kidznok Check your PM

Update found this from gile https://forums.augi.com/showthread.php?68868-Adding-vertexes-to-a-polyline&p=765721&viewfull=1#post765721 can it be modified so i can pick multiple points until I exit?

Does anyone have a lisp that can add multiple vertex for polyline? I found this Lisp from the great @Lee Mac and it works except that I need to be able to pick simultaneously even if it does not reside on the line then hit escape or enter when done. I will then move the added vertex to its proper location.

Type GRAPHICSCONFIG → Enter → Advanced Settings → uncheck “Fade inactive geometry” (or slide it to 0%) → Apply → OK. That’s it. Your prints will instantly look exactly like they did in AutoCAD 2022 – no more extra faint lines.

You're missing the double backslash ("*\\P*") Also, note that the use of vl-string-subst with a constant starting position and wcmatch to test the content is dangerous in general as this will result in an infinite loop if the replacement string contains the find string, e.g. consider replacing "new" with "knew" - your code would loop indefinitely.

Is it exporting to Excel direct or are you using the CSV ? I have a libre Calc output as well.

Thanks everyone, the answer sometimes is just looking at you and waving back. Need to double check help in future. (while (wcmatch txt "*\P*") (setq txt (vl-string-subst "\n" "\\P" txt 1)) ) Screen Recording 2025-11-24 093452.mp4