cat3appr Posted October 6, 2021 Share Posted October 6, 2021 RPL coordinates.txtRPL.dxf Hello, I have the attached dxf , which represents a route, i have its XY coordinates in txt. Is there a way to reduce the density and give only a few points, for example where major alter points occour? for example, a point every 5 m in the steep curves and a point every 100m in the straight parts? Quote Link to comment Share on other sites More sharing options...
eldon Posted October 6, 2021 Share Posted October 6, 2021 As a matter of interest to judge the scale of the problem, what units are you using? Quote Link to comment Share on other sites More sharing options...
cat3appr Posted October 7, 2021 Author Share Posted October 7, 2021 Meters Quote Link to comment Share on other sites More sharing options...
BIGAL Posted October 7, 2021 Share Posted October 7, 2021 (edited) Been asked many times, there are some dirty solutions like skip every second point. To skip a point as its on same line BRG is more difficult but I think is out there, maybe at forums/autodesk, did you Google. Never used it weed.lsp is out there. Edited October 7, 2021 by BIGAL Quote Link to comment Share on other sites More sharing options...
eldon Posted October 7, 2021 Share Posted October 7, 2021 There is a considerable difference in the amount of data in two files you posted. The coordinate file has coordinates at one metre spacing, but the DXF file has lines which are about 30 metres in the curved sections and the straight section lengths vary between 200 to 11000 metres long. So if you want 5m spacing in the steep curves and 100m spacing on the straights, then the amount of data will increase in the DXF file. Any 'weeding out' of points will degrade the accuracy of the original data. What is the drawing to be used for? The amount of data loss depends on the acceptable degradation for usage afterwards. The line is drawn as a 3D polyline, but all at the same elevation. It is 620 km long which means about 620000 coordinate points. I would personally try a spread sheet to filter out excessive data. Quote Link to comment Share on other sites More sharing options...
lrm Posted October 7, 2021 Share Posted October 7, 2021 Autodesk's Civil 3D has a weeding feature. Here's an explanation of how it works. It considers the distance between vertices and the change in angle. Quote Link to comment Share on other sites More sharing options...
SLW210 Posted October 7, 2021 Share Posted October 7, 2021 AutoCAD Map3D toolset has the drawing clean-up tool as well. Not sure if it will do as well as the Civil3D tool. If the OP has AutoCAD 2011 as indicated, eldon's method might be best. 6 hours ago, eldon said: I would personally try a spread sheet to filter out excessive data. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.