SSC silhouette score computation

[Silan Ankara]

Hi everyone,

I am working on my thesis and very new to Stata. I am using Stata version 18.5.
I am trying to compute silhouette scores for my kmeans cluster analysis with 3 clusters after conducting PCA. I retained 3 scores and they are called pca1, pca2, pca3.
I ran the following:

cluster kmeans pca1 pca2 pca3, k(3) name(kmeans3) measure(L2Squared)
matrix dissim di = pca1 pca2 pca3, L2Squared
silhouette kmeans3, dist(di) id(_uuid) lwidth (0.8 0.8 0.8)

However, I get the following error:

option contents() not allowed since Stata 17; see help table for updated syntax

Is it a syntax error? Could anybody advise me on how to resolve the issue?

Thank you for your help in advance!

[Chen Samulsion]

I also encounter a problem when performing silhouette:

             silhgroup():  3301  subscript invalid
                 <istmt>:     -  function returned error
r(3301);

Edit:
After searching Statalist, I find a solution. The thread which I refer to is here:
https://www.statalist.org/forums/for...in-nested-loop

[Chen Samulsion]

Silan Ankara for your question, there's a simple solution. Just use version control.

version 10: silhouette kmeans3, dist(di) id(_uuid) lwidth (0.8 0.8 0.8)