[R] algorithm used in k-mean clustering

2005-04-22 Thread Asha Jayanthi
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 but could not find any. I obtained the kmean result for k ranging from 2

[R] error in kmeans

2005-04-01 Thread Asha Jayanthi
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 of initial centers the commands are M -matrix(scan(R_mutual,n = 165 * 165),165,165,byrow = T) cl -

RE: [R] NA's?

2005-03-30 Thread Asha Jayanthi
] [mailto:[EMAIL PROTECTED] On Behalf Of Asha Jayanthi Sent: Thursday, 31 March 2005 11:22 AM To: r-help@stat.math.ethz.ch Subject: [R] NA's? 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

RE: [R] NA's?

2005-03-30 Thread Asha Jayanthi
is not a possibility. Just as a curiosity, what were you hoping that na.omit(M) would do? V. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Asha Jayanthi Sent: Thursday, 31 March 2005 11:22 AM To: r-help@stat.math.ethz.ch Subject: [R] NA's? I have a large matrix of data

RE: [R] 2d plotting and colours

2005-03-30 Thread Asha Jayanthi
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: Mulholland, Tom [EMAIL PROTECTED] To: Asha Jayanthi [EMAIL PROTECTED],r-help

RE: [R] 2d plotting and colours

2005-03-30 Thread Asha Jayanthi
colours , say col = cl$cluster = a set of group numbers say 1...10 should produce 10 distinct colours points grouped by colour. how to do this when you have more than 8 group colours to plot From: Mulholland, Tom [EMAIL PROTECTED] To: r-help@stat.math.ethz.ch,Asha Jayanthi [EMAIL PROTECTED] Subject: RE

[R] NA's?

2005-03-30 Thread Asha Jayanthi
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(M) = NA and M = na.omit(M). But this omits all the rows. I only want to omit that diagonal

[R] 2d plotting and colours

2005-03-29 Thread Asha Jayanthi
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 tried the kmean clustering for a large matrix ,say 150 * 150 . I tried the example