On 25.02.2011 15:33, Jay wrote:
Hi,
I'm trying to utilize the kohonen package to build SOM's. However,
trying this on my data I get the error:
"Argument data should be numeric"
when running the som(data.train, grid = somgrid(6, 6, "hexagonal"))
function. As you see, there is a problem with the data type of
data.train which is a list. When I try to convert it to "numeric" I
get the error:
(list) object cannot be coerced to type 'double'
What should I do? I can convert the data.train if I take only one
column of the list: data.train[[1]], but that is naturally not what I
want. How did I end up with this data format?
What I did:
data1<- read.csv("data1.txt", sep = ";")
training<- sample(nrow(data1), 1000)
data.train<- data1[training,2:20]
I tried to use scan as the import method (read about this somewhere)
and unlist, but I'm not really sure how I should get it to numeric/
working.
We do not know what data types are present in data1. If all columns are
numeric, just convert to a matrix (using as.matrix()).
Uwe Ligges
Thanks,
Jay
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