After the Dynamo teams persentation today on design script I got energized and dove back into Dynamo’s Imperative functions. I have had the goal for a few years to get Kmean to work in Design script with no luck. I got a bit closer today but still confused and not even sure if it is even possible. Attached is the .dyn with the required function. How to inbed them into a while loop is the question?!? Kmean (Python) explanation : CS221 [image] Kmeans.dyn (54.0 KB)

Great with your descriptions in dynamo .

[image] Sean_Fruin: How to inbed them into a while loop is the question? Replication guides don’t work within Imperative blocks. You could however create an associative function that does the needful and call it within the imperative block [Kmeans1_2021-09-10_10-39-47]

[image] Sean_Fruin: I got a bit closer today but still confused and not even sure if it is even possible. See if this is adequate. Not complete though. [Kmeans-20210910-1_2021-09-10_02-25-22] Kmeans-20210910-1.dyn (24.7 KB) // Group by Centroid def k1(pnts:var[]..[],cnts:var[]..[]) { //Labels lbl1 = "A"..#(List.Count(cnts))..1; //Distance to Centroids dst1 = pnts .DistanceTo(cnts ); dst2 = List.SortByKey(lbl1,dst1 ); dst3 = List.FirstItem(dst2["sortedList"] ); //Group by Closest to Centroid pnt1 = List.GroupByKey(pnts,dst3)["groups"]; return pnt1; }; // Centroid def ctr (pnts:var[]..[]) { return Point.ByCoordinates(Math.Average(pnts.X), Math.Average(pnts.Y),Math.Average(pnts.Z)); }; // K Mean def kMean (pnts:var[]..[],k:int) { pnt1 = k1(pnts,pnts[1..k]); cnt1 = 1; pnt2 = []; pts1 = [Imperative] { while (cnt1 <= k) { ctr1 = ctr(pnt1); pnt2 = k1(List.Flatten(pnt1,-1),ctr1); cnt1 = cnt1 + 1; pnt1 = pnt2; } return pnt2; } return pts1; };

Thanks @Vikram_Subbaiah!! What version of Dynamo did you use? I open your script using Dynamo 2.6.1 and got one large cluster. I’ll be taking a closer look this weekend. [image] Dose this function make the Centroids? [image]

[image] Sean_Fruin: What version of Dynamo did you use? Try this new look daily build I’ve used a csv file (change attached txt extension to csv) instead of Remember Kmeans-20210910-2.dyn (16.0 KB) pnts.txt (218.9 KB) [Kmeans-20210910-2_2021-09-10_11-56-48] [image] Sean_Fruin: Dose this function make the Centroids? Yes.

Looks fancy the new look…:wink: does it comes with next update for revit as well??

Ooh this is interesting. I was just looking at K Means for image segmentation… Did you ever use it to group by color? (Im researching ways to find all the ‘empty’ space in a view).

Design Script - Imperative kmeans

Lists-Logic

Sean_Fruin September 10, 2021, 3:12am 2

@Vikram_Subbaiah?
Good persentation today, thanks for the inspration!

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Design Script - Imperative kmeans

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