topic Re: Create a Boundary around a set of disconnected polyline objects in AutoCAD Forum

Create a Boundary around a set of disconnected polyline objects

Terence3YCFB — Tue, 30 Jul 2024 17:13:54 GMT

I design irrigation in and around landscape beds for large gated communities. Often, when we recieve the plans for the landscape beds, instead of getting a plan showing the edges of each landscape bed, we get a plan showing the segments of each bed where different plants are grouped.

I've been tasked with simplifying these beds, to show a continuous plant bed edge, regardless of planting segments.

I'm attempting to use Boundry and have had some luck.

im using exoffset to overlap the segments before using boundry, but the issue im running in to is exoffset doesnt work on closed polylines that overlap themselves, and boundry doesnt work consistently on large selections.

am I over complicating this? there must be a way to manipulate tolerances for the Boundry command. In this example, each planting segment is seperated 6" off of the adjacent segment. but it isnt quite uniform. if i could just set a 1' tolerance I could wrap all thes pretty easily into each landscape bed through the whole community all at once....

Any help would be appreciated tremendously...

Re: Create a Boundary around a set of disconnected polyline objects

Patchy — Tue, 30 Jul 2024 17:51:38 GMT

It's best to ask this group for help:

https://forums.autodesk.com/t5/visual-lisp-autolisp-and-general/bd-p/130

Re: Create a Boundary around a set of disconnected polyline objects

TerryDotson — Tue, 30 Jul 2024 20:30:00 GMT

Have you tried creating a RECTANGle around all the islands, then using the BOUNDARY command and picking inside one corner? If there aren't too many vertices, it could create boundaries around all your islands.

Re: Create a Boundary around a set of disconnected polyline objects

Terence3YCFB — Wed, 31 Jul 2024 14:25:18 GMT

I have tried this. This only replicates each existing planting beds. Im attempting to draw a landscaping bed edge around the larger groups of planting beds without connecting each individually.

Re: Create a Boundary around a set of disconnected polyline objects

Kent1Cooper — Wed, 31 Jul 2024 16:09:21 GMT

@TerryDotson wrote:

Have you tried creating a RECTANGle around all the islands, then using the BOUNDARY command and picking inside one corner?....

[That doesn't get the overall-groupings boundaries because of the "each planting segment is seperated 6" off of the adjacent segment" issue.]

Re: Create a Boundary around a set of disconnected polyline objects

parkr4st — Wed, 31 Jul 2024 19:35:24 GMT

This is a mapping problem. See the attached dwg. The left upper set of beds is within a line on the 111_Bed1 layer.

Is this what you are aiming for?

If you are on subscripion you can install Map3d and do this.

the basics are to select a group of beds and move those to a layer i.e. Bed1, Bed2, etc

mapimport the layer and buffer each bed group first out a distance and then in the same distance (15 out -15 in for example.

The resulting object is mapimported to the polygon in this dwg attached.

Better yet is to georeference to data so it is located on the earth and other data can be related to it.

Re: Create a Boundary around a set of disconnected polyline objects

Terence3YCFB — Wed, 31 Jul 2024 20:18:14 GMT

This is an interesting solution, and i thank you for the detailed response. Unfortunately I'm looking for something with a much simpler result. Preferably without a boatload of vertices 😂

Prior to my hiring at this company Autocad 2024 could have been replaced with MSPaint, and we'll never need to geomap.

Attached is the result im hoping to find a solution towards.

This result has been achieved by manually placing a polyline. and conforming to the outer edges. which is tedious.

Re: Create a Boundary around a set of disconnected polyline objects

Patchy — Wed, 31 Jul 2024 20:27:13 GMT

Try SHRINKWRAP command:

Re: Create a Boundary around a set of disconnected polyline objects

АлексЮстасу — Thu, 01 Aug 2024 04:58:33 GMT

https://www.lee-mac.com/outlineobjects.html