similar to: question: how to select a column from a dataframe in a function

This is quite strange behaviour - at least for R-novice as myself.... Consider this: > testf <- function() { x <-2; sprintf("%s %f", "x =", x); return(x) } > result <- testf() > testf <- function() { x <-2; sprintf("%s %f", "x =", x) } > result <- testf() > testf() [1] "x = 2.000000" Apparently adding return()

Hello Everybody, I have pretty basic question abut REXML. I want to put the String "John doe" in titles array, if attribute name is equal to "93". Please see the code below. I could not find how to do it.. any help would be very appriciated. Here is the XML i am trying to parse <entrydata columnnumber="2" name="93"> <text>John

Dear R helpers, I am having trouble with an array inside a loop. I wish to accumulate the results of a function in an array within the function, over several loops of a program outside the function. The problem is that the array seems to re-set at every entry to the function. Here is an example, so you can see what I mean.

Hello! I would like to know if there is a simple way to reorder levels of a given factor.Let's say that the vector testf<-factor(c("red","red","red","blue","blue","white")) levels(testf) : blue red white should have reordered levels such as levels(testf) : red blue white (this is for presentation purposes) I guess

Hi all, I've been having trouble with something that seems like it should be fairly straight forward. Any help at all from more experienced users is appreciated! I'd like to write a function that uses a column name as an argument. However, I run into problems when I try to reference this column within the function. For example, findCutoff <- function(tableName, columnName) {

dear R wizards --- would it make sense for names(d$columnname) to be "columnname"? I can preserve the columnname through x=subset(dataset, select="columnname"), of course, but it would seem that x=d$columnname could also do this. No? Sincerely, /iaw

I have a question with llvm-gcc and llvm-gfortran. Is it possible that llvm-ld can combine different bc files compiled from C programme and Fortran Programme together? For example: Compile a c program into llvm bc file by the task: # llvm-gcc -emit-llvm test.c -c -o test.bc and then compile a fortran program into llvm bc file by the task: # llvm-gfortran -emit-llvm testf.f -c -o testf.bc And

Hello, how can I get a variable driven summary of one column of my data.frame? Usually I would do > summary(data$columnname) to get a summary of column named "columnname" of my data.frame named "data". In my case the columnname is not static but can be set dynamically. So I save the chosen columname in something like variable <- "columnname" but how can I

Hello, I would like to run some code in parallel with each cluster reading/writing to a different working directory. I've tried the following code without success. The error I get is: "Error in setwd(x) : cannot change working directory" library(parallel) dirs <- list("out1","out2","out3") # these directories are located within the current

Hello, In my script I would like to use a loop, which sorts the dataframe according to different columns, pointed by the string variable. id col1 col2 col3 1 10 0 4 8 2 11 1 2 2 3 12 0 8 3 4 13 0 5 5 Usually the order() function can be used like this: sorted = mytable**[order(column3) , ] which results in properly sorted table: **

Sorry, sorry.... of course levels(testf)[c(2,1,3)] will do the job My excuses to all Anne PS I will meditate the following saying "la parole est d'argent et le silence est d'or" BONNES FETES A TOUS SEASONAL GREETINGS ---------------------------------------------------- Anne Piotet Tel: +41 79 359 83 32 (mobile) Email: anne.piotet@m-td.com

hi everyone : suppose i have a matrix in which some column names are identical so, for example, TEMP "AAA", "BBB", "CCC", "DDD","AAA", "BBB" 0 2 1 2 0 0 2 3 7 6 0 1 1.5 4 9 9 6 0 1.0 6 10 11 3 3 I didn't even check yet

hi, say I have consecutively numbered objects obj1, obj2, ... in my R workspace. I want to acces one of them inside a function, with the number given as an argument. Where can I find help on how to do that? Somebody must have been trying to do this before... Some keywords to start a search are appreciated as well. Here's an example, I hope it clarifies what I'm trying to do: obj1 <-

Hello R users I recently learned how to use this command: lapply(datum,"[[","ColumnName") Unfortunately, I don't know how exactly it works, what it's called (in particular the "[[" part], and what other things you can do with it (retrieve multiple columns?). Given datum is a list of dataframes with the same column, but different number of rows,

Hi, I have bitcode files built by LLVM v3.3 and need to process them using v3.4 tools. While I don't expect a lot of backward compatibility in LLVM, luckily it seems everything's working fine, except for reading source line information attached to instructions. I use this piece of code [0] to get source line information. For v3.4, instruction.getMetadata returns NULL. I used llvm-dis to

Hello, I have a matrix results with dimension 1x9 double matrix XLB XLE XLF XLI 1 53.3089 55.77923 37.64458 83.08646 I'm trying to order this matrix > print(order(results)) [1] 3 1 2 4 how can the function order return the columnname XLF XLB XLE XLI instead of 3 1 2 4 any idea ? Thank you in advance --

I have one table(profiles) where each row has many rows in another table(carriers). If I write profile.carriers I get a collection containing all carriers that belong to the current profile. My question is: how do I sort the collection profile.carriers? I would like to sort it on one of the columns (found in the table carriers). Can I override some method in the carrier model or somewhere

So I''ve got an ActiveRecord model pointing to a MySQL db, with an auto-serialized column ("serialize :columnName"). Thing is, MySQL, depending on how it''s configured (like, by default), has a bad habit of just truncating your data if it''s too wide for the column, with no error raised. Yeah, I can probably reconfigure MySQL and/or my AR connection to it. But

I''ve noticed that it is common practise in forms to use: <label for="tablename","columnname"> ...Some column name</label> Why is the above construct better than just writting it this way? <label> Some column name</label> If there is not compelling reason, I''d prefer to use the second example and save on typing. -- Best Regards,

Thanks Eric, but could you give me a little bit more hints or pointers please? I looked into DebugInfo.h, but I'm still not sure how to start. It sounds like I'd have to somehow manually extract metadata nodes from an instruction. Thanks, JS On Wed, Jan 22, 2014 at 10:14 PM, Eric Christopher <echristo at gmail.com>wrote: > This is likely going to be difficult if possible. I