Search Archives

I have a large matrix of data . The size of the matrix ranges from 100 x 100 to 1000 x 1000 Now i have to do computations on that. And should not consider the diagonal elements. I tried setting diag...

Hi, I have used the kmean fucntion in R to produce some results for my analysis. I like to know the specific underlying algorithm used for the implementation of the function kmean in R. I tried looking for some documents...

Hi! I am new to R just 3 days in it and i apologize if my questions seem very trivial and consumed your valuable time. I am coding in perl and i stumbled upon R regarding plotting good statistical graphs...

I am trying to generate kmean of 10 clusters for a 165 x 165 matrix. i do not see any errors known to me. But I get this error on running the script Error: empty cluster: try a better set...

Thank you very much. the code plot(x, col = s) points(cl$centers, col = s, pch = 8, cex=2) does not plot the points according to the group colors. The plots are used to identify the groups by colors That...

Thank you. mycols <- c("brown","orange","tomato") plot(x,col = mycols[cl$cluster]) this works. I can define distinct colours and check the graph. the rest of the examples does not give a wide palette to choose from Asha >From...

I am sorry about that. I like to do column mean, sd, var as well as kmeans on the matrix does this na.rm = TRUE work for such fuctions and only the diagonal is ignored? >From: <Bill.Venables at csiro...

i have not answered your query in the last mail. I hoped na.omit(M) will just ingnore the diagonal elements. i learnt by practice that it removes the whole row which has atleast one NA!! (that is not the...