search for: jiantao

...quite simple but i just don't know how to make it. I have a matrix a somewhat like this one but bigger: > a f g h i j k a NA NA 11 16 21 26 b NA NA 12 17 22 27 c NA 8 13 18 23 28 d NA 9 14 19 24 29 e NA 10 15 20 25 30 And i want to get the rows which at most have 2 Na. Thanks in advance. Shi Jiantao [[alternative HTML version deleted]]

Hi, i want to plot figure like this, http://www.cis.hut.fi/projects/somtoolbox/download/pics2/shotvs2_colorcode.png So is there a function or package in R can help me to do this. Any suggestion will be appreciated. Thanks in advance Jiantao Shi [[alternative HTML version deleted]]

...which contains a lot of DNA sequence in fasta format.And i want to get probabilities matrix for 2nd order markov china from this background.Here is a web tool, http://tandem.bu.edu/markov.html.But i can not upload a large file. I wonder if there is a R packages can do this ,Thanks in advance . Jiantao Shi ** <http://tandem.bu.edu/markov.html>** <http://tandem.bu.edu/markov.html> [[alternative HTML version deleted]]

Hi, I have a data frame, > df=rnorm(1000) > dim(df)=c(100,10) > And i can get the boxplot, > boxplot(data.frame(df)) So how can add a line (aline) on the existing boxplot,eg, aline=apply(df,2,max) Thanks in advance. [[alternative HTML version deleted]]