AutoCad :: Extract Coordinates Along Polyline
Jan 3, 2008
Imagine i have a polyline(2d or 3d doesn't really matter),and i want to extract the coordinates info of every vertex on the polyline from start to end.
How do i do that in AutoCAD?And if not is there a way to do it on any of the verticals?
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Apr 4, 2012
I have to tabulate the X and Y co-ordinates along a polyline at 1 metre intervals. I have divided the polyline into segments of one metre and have tried to use a command called data extraction. So I use this command and individually click on each point. The end result gives me the X and Y coordinates in the order I have picked them however when I put it into a table on the drawing it messes up the order?
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Jun 11, 2013
Is it possible to extract coordinates to a spreadsheet or display them on screen of points in AutoCad. I would like to know the coordinates of all the intersections of the lines in the model shown in the attached pdf. The 3d model was drawn in Revit as model lines. If there is a simple way to draw this shape in AutoCad, it is part of a torus.I imported it into AutoCad as Revit had a few limitations.
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Dec 20, 2011
I am busy writing a small app to find a best fit circle through a series of points that roughly follow the profile of an arc. This data was scanned in using a Farro arm and imported to AutoCAD.
I would like to use VB.Express and the AutoCAD API. So far I have managed to write some code (loosely based on some examples from the AutoCAD .NET Developer's Guide) to allow the user to select the points to process.
I have three questions around this issue:
a.) How can I set up a selection filter to limited the user's input to 2d points only?
b.) Once I have the selection set of points, how can I extract the "X" and "Y" values of each of the points to be able to process further?
c.) Is there some sort of Object model diagram for the AutoCAD API that I can download, or any (downloadable) literature to get started with the API and VB.Express. I have looked online for some books and Amazon list them, but a. they are in hardcopy format and b.) the most recommended one (i.e. VB.NET Programming for AutoCAD Customization - Level 1 Jeremy Winters) is out of print. I am specifically looking for downloadable books because of the delivery times and shipping costs to get a hard copy.
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Mar 2, 2007
how to extract pile coordinates to excel or spreadsheets, or anything that works and is quicker than just individual pile coordinates. i have about 446 piles.
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Sep 16, 2011
I have some experience with Vb.net.
But I have a problem:
I have a polyline
I select it
The result to be a message box with the intersection points for all the lines, polylines that intersect this polyline.
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Sep 11, 2005
How can I extract text from polyline area. Ideally scaled by some factor (drawing in millimeters convert to area in meters).
I need to write a lot of areas of some room etc. into them and i want to know if there is another possibility than select polygon note the area and make text.
I'm unsing AutoCAD 2005 CZ.
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Nov 19, 2011
How to change coordinates of polyline ?
I know how to get the coordinates but I need to get and change one of the coordinate.
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Dec 9, 2012
I want extract a (x,y,z) point from a text file and want to put marker to that point in a dwg file. how can I accomplish that?
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Jul 8, 2008
is there a way to extract a 3D poly line where two surfaces intersect each other.
i have ground surface and i have dam surface. they would like to show the filler material in the cross section graph.. so i copied then raised the surface the required depth.
so now the surface and side slope of the dam intersect. and i would like to trim the filler material surface to be in line with the dam.
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Aug 27, 2013
in order to obtain a seabed profile for a school project, I need to get the Y coordinate of a polyline on several Kilometers with a fxed X step of 2m between each point.
For the moment, the only manual solution I have found is to create a vertical line every 2m and to get the distance between the intersection of this line with my polyline and an horizontal line representing the mean sea level.
Is there any way to automatize it because it is very long to do manually and I don't have enough time ?
I did not succeed in doing this with dataExtraction. I also found on the internet a LISP file which extract the coordinates of points contained in the window. Nevertheless, I was told it is not possible to create automatically points on a curved polyline with a fixed x step.
What I need at the end is an excel file of this type to use it in another software:
X(m) Water Depth (m)
0 15.121
2 15.134
4 15.147
... ...
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Apr 25, 2012
I have a inserted block with 4 tags for Length, Thickness, Elevation and Width.How can extract attributes tag values and draw a closed polyline + 2 internal lines, parallel to the block?
Block Name: ID_DATA
Tags: LEN, THI, ELE and WID.
Each internal line placed in a third width.
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Jun 10, 2013
I have a an angular polyline (not horizontal or vertical). I want to equally divide the polyline with a specified length and get all separation co-ordinates at each interval. The line remains as polyline, I need to get only the co-ordinates of all the possible divisions for a given length.
I need a C#.Net function for this.
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Sep 8, 2011
I have a 2 point LWPOLYLINE that has the following coordinates at its end point when I 'ID' the point.
Command: id
Specify point: end
of X = 709369.3214 Y = 7153039.9690 Z = 269.2143
However if I use..
(vlax-safearray->list (vlax-variant-value (vla-get-coordinates (vlax-ename->vla-object (car (entsel))))))
I get this
(-450567.0 269.288 -450570.0 269.214)
and if I 'dump' the object..
; Coordinates = (-450567.0 269.288 -450570.0 269.214)
; Document (RO) = #<VLA-OBJECT IAcadDocument 09855674>
; Elevation = 7.17399e+006
I don't have a clue where the '-450567.0' is coming from.
I'm in Model Space in 'World' UCS, and I'm confused.. why does the 'ID'd' value not reflect whats going on when I use the vla-get-coordinates approach.
There are many other LWPolylines within the same model that behave normally.
I've attached the drawing (I think!)
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Dec 21, 2011
Code that I can run to export the handles and x y coordinates of closed polylines and show results in a text file.
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Jun 18, 2012
i am trying to translate a Point coordinates from Paperspce to world coordinates in model space.The code i used in Land2006 worked OK but now in Civil3d 2012 it doesn't!
Private Sub GetPlais_Click()
Dim tmpnt1 As Variant, tmpnt2 As Variant, tmpPnt1 As Variant
Dim lole(0 To 2) As Double, upri(0 To 2) As Double
Dim returnobj As AcadObject
FrmGrid3.Hide
On Error GoTo Eline
ThisDrawing.Utility.GetEntity returnobj, tmpPnt1, "ÅðÝëåîå ôï ViewPort ðïõ èá äçìéïõñãçèåß ï êÜíáâïò!"
If TypeOf returnobj Is IAcadPViewport Then
[code]........
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Aug 21, 2013
I'm a GIS analyst trying to learn Cad. I'd like to place a single point in autocad model space at a specific Northing/Easting position. After reading several forum threads I don't think CAD allows me to change the coordinate system of model space from map coords to northing easting coords, as we can in GIS.
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Nov 6, 2013
Is there a way, when you are drawing a polyline, to have the tooltip box show the cumulative length of the polyline, rather than the length of the current segment being drawn?
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Jun 7, 2012
I would like to take all the vertices out of a multiple-vertices polyline so that it reduces to just its start and end points, can this be done?
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Sep 21, 2013
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.
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Nov 11, 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.
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Jun 29, 2013
I want to convert a 3D polyline to 2D polyline.
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Sep 16, 2011
Is there any way at all to draw a new polyline - from the endpoint of another polyline, and have it automatically join as one polyline from the existing section??
I know this can be done via PEDIT, but its so laborious and soo many clicks, and I have alot of segmented Polylines that I need to consolidate when I draft.
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Mar 22, 2012
Any way I can align a new polyline to a reference polyline (orig polyline).
The 2 polys will be generally the same length, however, the number of vertices will differ.
Also I need to mantain the same distance between the vertices on the new poly and the new and reference poly won't follow the same direction.
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May 18, 2011
How do you find 'if' a polyline is inside another polyline?
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Aug 15, 2012
The coordinates that we can apply in Revit (project/shared) aren't exactly the same to have real world projection coordinates (WGS84)??
If not how can we convert the revit shared coordinates to real world projection coordinates?
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Mar 2, 2012
How do you convert a closed Polyline to 2D Polyline? CONVERT does not work in reverse.
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Jun 25, 2008
I have 2D polylines and want to convert to polylines, but to no avail. Tried to 'spline2pline' this line, but ACAD refuse to select it.
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Aug 10, 2012
I can do this in AutoCAD Map but I have my doubts. I will explain in ESRI GIS terms (this is what I am familiar with) and I hope you can tell me if I can do this in AutoCAD Map. In ESRI ArcMap I can select a line and I can hit a Select by Location button. In this window I can select all of the objects that intersect my selected line. Then I can delete them or export them etc.
In AutoCAD Map I have a polyline selected. It is my road centerline. I want to be able to select all of the other polylines that intersect my selected polyline. Is there a way to do this? I need to erase those polylines. Usually I will pan to each of them and select them individually. It just seems to take a lot of time. My AutoCAD co-worker said I could use a fence and draw the fence through my polylines. It seemed to work ok but I accidently deleted extra things that I needed. So I'm back to manually selecting each one by one unless you know a different way.
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Mar 24, 2013
How to convert a 3D Polyline contour to Polyline contour.
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Mar 1, 2012
How to extract a section from a cad dwg that has contours and place on a graph like manner to show the different elevations of the particular section.
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