Grouping variable must be a vector or a character array
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I have done the following:
I=imread('image.png');
I2=im2double(I);
cidx = fcm(I2,5);
When I tried running the following command:
silhouette(I2,cidx)
I got the following error:
Error using grp2idx (line 39)
Grouping variable must be a vector or a character array.
Error in silhouette (line 79)
[idx,cnames] = grp2idx(clust);
How can I solve this issue?
Thanks.
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Answers (1)
Walter Roberson
on 31 Dec 2013
The first output of fcm() is centroid coordinates, not membership information. Membership information would appear in the second output. See the example at http://www.mathworks.com/help/fuzzy/fcm.html
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