[R] scientific notation in a data frame

Dear list, I have a data frame where one of the columns are p values with scientific notation mixed with regular numbers with decimals. a=data frame a P OR N 0.50 0.7500 237 0.047 1.1030 237 0.124 0.7742 237 0.124 0.7742 237 0.0080 1.1590 237 0.50 0.7500 237 4.5e-07 1.2 237 5.6e-04 0.9

Re: [R] scientific notation in a data frame

Thank you! On Tue, Mar 20, 2012 at 8:39 PM, David Winsemius dwinsem...@comcast.netwrote: On Mar 20, 2012, at 7:52 PM, Laura Rodriguez Murillo wrote: Dear list, I have a data frame where one of the columns are p values with scientific notation mixed with regular numbers with decimals

Re: [R] : how to select rows at random

5004 25 5004 26 5004 35 5004 36 5004 45 5004 46 5004 55 Thank you! Laura 2009/3/27 jim holtman jholt...@gmail.com: ?sample On Fri, Mar 27, 2009 at 3:11 PM, Laura Rodriguez Murillo laura.lmuri...@gmail.com wrote: Hi dear list, I have a list of around 2000 identifiers aranged

Re: [R] : how to select rows at random

1329 1500 1806 1623  186  352 1270 1727 1170 518 1743  370  964   20  710  870  248 1227  594  471  704 1751 [41] 1942 1435 1944 1057  849 1886  290  130   48 1195 On Fri, Mar 27, 2009 at 3:18 PM, Laura Rodriguez Murillo laura.lmuri...@gmail.com wrote: Sorry, I'm attaching part of the file I

[R] : put grids in a plot at specific x points

Hi dear all! I wonder if anybody can help me with this: I have a plot: allchr - read.table(allchrtog.txt, header=F) attach(allchr) names(allchr) [1] V1 V2 V3 V4 plot(V1,V3, type=n) lines(V1,V3) and I want to add grids to the plot but just at specific x points. So for example, the first

Re: [R] : put grids in a plot at specific x points

: abline(v=vec, lty=dotted) -- David Winsemius On Mar 16, 2009, at 4:25 PM, Laura Rodriguez Murillo wrote: Hi dear all! I wonder if anybody can help me with this: I have a plot: allchr - read.table(allchrtog.txt, header=F) attach(allchr) names(allchr) [1] V1 V2 V3 V4 plot(V1,V3

[R] : record which entry in one file doesn't appear in a different file

Hi dear list, If anybody could help me, it would be great! I have two files: File 1 is a list (one column and around 10 rows) File 2 is a list with all the names from file one and a few more (one column and more than 10 rows) What I want is to add a column in file 2 that says which name

[R] :How to insert a column in a data frame

Hi dear list, I wonder if somebody can help me with this. I have a text file with 300 rows and around 30 columns and I need to insert a column that has the number 1 in every row. This new column should be placed between columns 6 and 7. As an example: I would want to insert a column

[R] how to delete specific rows in a data frame where the first column matches any string from a list

Hi, I'm new in the mailing list but I would appreciate if you could help me with this: I have a big matrix from where I need to delete specific rows. The second entry on these rows to delete should match any string within a list (other file with just one column). Thank you so much! Laura

Re: [R] how to delete specific rows in a data frame where the first column matches any string from a list

Kusnierczyk waclaw.marcin.kusnierc...@idi.ntnu.no: Laura Rodriguez Murillo wrote: Hi, I'm new in the mailing list but I would appreciate if you could help me with this: I have a big matrix from where I need to delete specific rows. The second entry on these rows to delete should match any string

Re: [R] how to delete specific rows in a data frame where the first column matches any string from a list

...@idi.ntnu.no: Laura Rodriguez Murillo wrote: Thank you. I think grep would do it, but the list of expressions I need to match is too long so they are stored in a file. what does 'too long' mean? So the question would be how I can tell R to look into that file to look for the expressions that I

Re: [R] how to delete specific rows in a data frame where the first column matches any string from a list

Thank you so much! I finally got it. Laura 2009/2/6 Sebastien Bihorel sebastien.biho...@cognigencorp.com: Hi Laura, You might want to read the manual on Data importation and exportation on the cran webpage http://cran.r-project.org/ Otherwise, have a look at ?read.table. Sebastien