topic Is it possible to segment a line into evenly spaced point data? in AutoCAD Forum

Is it possible to segment a line into evenly spaced point data?

201821253 — Tue, 12 Apr 2022 05:54:20 GMT

I am trying to divide the following line into point data with a specified interval. And I want to get the coordinate values of each points.
I tried 'xplode', 'break' command. But it isn't what I need.

Re: Is it possible to segment a line into evenly spaced point data?

Pointdump — Tue, 12 Apr 2022 06:13:16 GMT

Hi @201821253,
Did you try Command DIVIDE? Then you can use Data Extraction to get coordinates of the points.
Dave

Re: Is it possible to segment a line into evenly spaced point data?

tramber — Tue, 12 Apr 2022 07:51:56 GMT

1) Use better MEASURE to specify a distance along the polyline and draw points (nodes) or insert blocks (it is an option) and then you can extract those datas...

2) Second option, if i understand that you just want to extract coordinates of a polyline, this is a fast made lisp :

(defun c:expts(/ profile result) (cond( (setq profile(entsel "\nSelectionnez la polyligne\n")) (setq result(mapcar 'cdr (vl-remove-if-not '(lambda (x) (= (car x) 10)) (entget(car profile))))) (foreach p result (princ(strcat(rtos(car p)2 2)"," (rtos(cadr p)2 2)"\n"))))) (princ) )

Load it, run EXPTS and you will get the coordinates...

1) or 2) ?

Re: Is it possible to segment a line into evenly spaced point data?

Zlatislav.atanasov — Thu, 14 Apr 2022 05:35:56 GMT

Hi @201821253
There is a great LISP that does just what you need. It Splits Polylines into equal segments you can check it out here: How to Split Polyline into a number of Segments or at Intervals?

Re: Is it possible to segment a line into evenly spaced point data?

Kent1Cooper — Thu, 14 Apr 2022 11:56:24 GMT

@201821253 wrote:

I am trying to divide the following line into point data with a specified interval. And I want to get the coordinate values of each points.

Do you want the line [or arc, or polyline, or circle, or...] actually broken into pieces at that interval, or do you just want the coordinates at locations along it at that interval? If the former, I have a routine to do that by specifying the number of equal-length pieces you want it broken into, which could be edited to use a specified interval instead. If the latter, in what form? An AutoLisp list of point-coordinate lists? Text in the drawing somehow? An external file of some kind? Etc.