On 2024-10-26 3:14 p.m., Cleber Borges via R-help wrote:
Hello everybody,
I'm trying to build a function to illustrate, in 2D, the sequence of the
"Single Link" algorithm (the purpose is merely didactic).
The idea is to have the scatter of points on a graph.
Iteratively, build the segments (with the "segments()" function, for
each step).
I simulated a data set "d", and created an object "r" using the command:
r <- hclust( dist( d ), met='single' )
My problem:
I created a recursive function, "f()", to find the shortest distances.
It is defined below.
But the return has only one column, while I thought there would be two
columns.
I suspect you used rbind() where you should have used cbind() in your f,
here:
return( rbind( rs, rbind( xmd1, xmd2 ) ) )
which should have been
return( rbind( rs, cbind( xmd1, xmd2 ) ) )
There may be other places where this change is needed; I haven't tried
running your code.
Duncan Murdoch
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