search for: qinghong

Hi All, What is the R function for computing multinomial distribution, e.g. f(2,1,3; 2/9, 1/6, 11/18, 6)? That is, a total of 6 trials, event 1's p1=2/9, x1=2, event 2's p2=1/6, x2=1, and event 3's p3=11/18, x3=3. thanks, Johnny [[alternative HTML version deleted]]

Hi, I need to read in some files. The file names contain come meta characters such as @, #, and white spaces etc, In read.csv, file= option, is there any way that one can make the function to recognize a file path with those characters? Thanks Johnny [[alternative HTML version deleted]]

Hi, If I set the p.adjust="none", does it meant that the output p values from the pairwise.t.test will be the same as those from individual t.tests (set var.equal=T, alternative="t")? I actually got different p values from the two tests. See below. Is it supposed to be this way? Thanks Johnny > x [1] 61.6 52.7 61.3 65.2 62.8 63.7 64.8 58.7 44.9 57.0 64.3 55.1 50.0 41.0

Hi, I use write.table() to write a file to an external xls file. the column names left-shift one position in output file. I check with col.names() row.names(), the file is fine. How to prevent the shifting? I71 I111 I304 I307 I305 I306 I114 I72 AFFX-BioB-5_at 6.66435 6.787807 5.335962 5.250163 6.47423 5.882104 5.965109 6.591687195 AFFX-BioB-M_at 6.163227 5.965427 4.665569 2.743531 6.097244

Hi, Can anyone help me to plot a chart graph? I have a data set like this. I would like a bar chart graph which mouse1's two treatments are clustered together, so on. I tried with barplot, but couldn't get it right. Thanks Johnny Mouse1 Mouse2 Mouse3 Trial Cont Treat Cont Treat Cont Treat 1 2.4 4.3 2 4.3 2 7 2 2.8 5.4 2.8 6 2 8 3 3.1 4.5 3 4.5