similar to: Help: sorting data frames

Dear R-guRus: I have a problem with the format of my data in R. Let's say I have a HUGE text table which consists of columns of numerical data, separated by tabs, but in some places rows of text (error messages, etc) are inserted in between rows of numerical data. Because the data file is so huge and because I have thousands of these files, it's unpractical to try and go thru these

Dear R-guRus: I have 2 questions 1) I have 2 variables, e.g. x<-5; y<-"Char" How do I create a new variable which would have both these values in a string (e.g. "5Char", or "5 Char", etc ) ?? 2) if i have an array x[1:100], and I do x[x==345.123], how do I get position j in the array of those x[j] which are equal to 345.123 ? Thank you very much, Vlad.

Dear R-gurus: How do I overlay 2 plots in the same frame in R? Or, if I have a histogram, and I want to plot a function in the same frame - how do I do it? Thank you very much, Vlad -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or

Dear anyone who knows more about R than me (so everyone). I have been bashing my head on the keyboard all day trying to do something with my table. I have some data, like so: yyyy-mm Rainfall(mm) 1 1977-02 17.4 2 1977-03 34.0 3 1977-04 26.2 4 1977-05 42.6 5 1977-06 58.6 6 1977-07 23.2 7 1977-08 26.8 8 1977-09 48.4 9

Hi, `model.matrix' might kill R with a segfault (on a illposed problem, but anyway): mydf <- as.data.frame(sapply(1:40, function(i) gl(2, 100))) f <- as.formula(paste("~ - 1 + ", paste(names(mydf), collapse = ":"), sep = "")) X <- model.matrix(f, data = mydf) *** caught segfault *** address 0x18, cause 'memory not mapped' Segmentation fault

Dear all, Question: How to merge two data frames such that new column are added in a particular way? I'm not actually sure how to best articulate my question to be honest, so i hope showing you what I want to achieve will communicate my question better. Lets say I have two data frames: > DF1 <- data.frame(cbind(Show=c('Firefly', 'Red Dwarf'), Measure=1:2,

Dear list, I'm trying to do a set of generic functions do make contingency tables from data.frames. It is just running "nice" (I'm learning R), but I think it can be better. I would like to filter the data.frame, i.e, eliminate all not numeric variables. And I don't know how to make it: please, help me. Below one of the my functions ('er' is a mention to EasieR,

I have a data.frame that was built from a number of smaller data.frames with rbind. Each ssmaller data.frame bound together runs over the same date ranges. The format of the whole thing looks like this: Trade PosType EnDate EnTime ExDate ExTime PL_Pos 1 1 1 1040107 915 1040107 1300 164 2 2 1 1040108 909 1040108 1300 184 3 3 1 1040115

Dear R-users, is there some way how to pass various colnames to the following code for sorting data.frames? mydf.ordered<-with(mydf, mydf[order(colname1,colname2, colnameX, decreasing = TRUE), ]) I was trying something like Afunction<-function (mydf,colnames,decreasing=T){ mydf.ordered<-with(mydf, mydf[order(colnames, decreasing = decreasing), ]) } but it didnt work please

Hi Newbie question: I have a set of data frames that I want to do the same calculations on each. I've found out that I can put them in a list and loop through the list to do the calculation, but not put the results back into each data.frame.. For example three data frames cats, dogs, birds where >cats name eats_kg 1 bob 3 2 garfield 4 3 chuck 6 and dogs and birds are similar but not

I am looking for the most efficient way to replace all occurrences of NaN in a data frame with NA. I can do this with a double loop, but it seems that there should be a higher level and more efficient way. With is.na, I could use ifelse, but if.nan seems not to have similar capabilities. TIA, Jon Peck Jon K. Peck jkpeck@aya.yale.edu [[alternative HTML version deleted]]

I use Samba 2.2.0 on small network. I use "security = user" and "username map" to map some Win-users to unix users. I have simple testing file with username mapping: root = vlad It is supposed that when I connect to samba as user "Vlad" with vlad's password I get the root's rigths to shares. Right? But when I try to connect to samba as "vlad"

Dear R-guRus: I am stuck with the following problem in R: Let's say i have a data.frame with columns X,Y & Z. X is a column of numbers, Y is a column of N factors "A", "B", "C", "D", etc and Z is a column of n factors "a", "b", "c", etc if i do MyLm<-lm(X~Y*Z - 1) i get all N coefficients for Y-factors, but only

Thank you. It is clear now, so it was user error and I should read more documentation :) Unfortunately drag and drop isn't working. Is there any prerequisite? My host is FC20 and guest is Win2k8 server Thank you Vlad On Thu 20 Mar 2014 05:42:40 PM CET, Jonathon Jongsma wrote: > ----- Original Message ----- >> From: "Laszlo Pal (private)" <vlad@vlad.hu> >>

On Wed, May 02, 2018 at 10:00:14AM -0400, Vlad Yasevich wrote: > On 05/02/2018 09:46 AM, Michael S. Tsirkin wrote: > > On Wed, May 02, 2018 at 09:27:00AM -0400, Vlad Yasevich wrote: > >> On 05/01/2018 11:24 PM, Michael S. Tsirkin wrote: > >>> On Tue, May 01, 2018 at 10:07:38PM -0400, Vladislav Yasevich wrote: > >>>> Since we now have support for

Hi! I''ve got a very strange problem. Suddenly the SQLite3 Backend stopped working. Example 1: > rake db:rollback == CreateProducts: reverting ================================================= -- drop_table(:products) rake aborted! An error has occurred, this and all later migrations canceled: SQLite3::SQLException: near "CASCADE": syntax error: DROP TABLE

Hi, I see you all agree to apply :) Stephen, repost of this patch to proper places below. Thank you Henrik for clarification of bridge standard. However, silent drop of locally generated packets on 99% idle carrier grade machine looks like a hardware problem. David, don't you think that having software packet drop counters is a bad idea? I thought, software drop counters are there to help

> Vlad, > > My initial impression is that you've stumbled across a bug. I suspect > that we - the only active users of the deopt info in the statepoint I > know of - have been inverting the meaning of Direct and Indirect > throughout our code. (i.e. we're consistent, but swapped on the > documented meaning) I've asked Sanjoy to confirm that, and if he >

On Wed, May 02, 2018 at 09:27:00AM -0400, Vlad Yasevich wrote: > On 05/01/2018 11:24 PM, Michael S. Tsirkin wrote: > > On Tue, May 01, 2018 at 10:07:38PM -0400, Vladislav Yasevich wrote: > >> Since we now have support for software CRC32c offload, turn it on > >> for macvlan and macvtap devices so that guests can take advantage > >> of offload SCTP checksums to

On Wed, May 02, 2018 at 09:27:00AM -0400, Vlad Yasevich wrote: > On 05/01/2018 11:24 PM, Michael S. Tsirkin wrote: > > On Tue, May 01, 2018 at 10:07:38PM -0400, Vladislav Yasevich wrote: > >> Since we now have support for software CRC32c offload, turn it on > >> for macvlan and macvtap devices so that guests can take advantage > >> of offload SCTP checksums to