similar to: help on proportions

dear group, i have a data matrix with some replicate items with different values. I want to extract the row with max value. for example: > x fruit weight 1 apple 1.3 2 apple 1.5 3 apple 1.6 4 orange 1.4 5 orange 1.6 x is a data frame. I want to extract unique items from fruits that has max weight. that is: 3 apple 1.6 5 orange 1.6 I want to be able to use

I'm trying to export a large data frame to a text file for permanent storage. The only thing I could find was the treeglia Package but that didn't work. Any suggestions? Thanks! Christina D Smith PhD Student, GRA Statistics Department Kansas State University

Dear Group, I have a data frame like the following: x <- c("Mike","A",0.01) x1 <- c("Carl","A",0.2) x2 <- c("Gene","C",0.3) x3 <- c("James","A",-0.3) x4 <- c("Dough","B",0) xx <- rbind(x,x1,x2,x3,x4) colnames(xx)<-c("Name","Class","NES") xx

Dear R-helpers, Lists in R are stumbling block for me. I kindly ask you to help me able to write a data-frame. I have a list of lists. > sls[1:2] $Andromeda_maya1 x y [1,] 369 103 [2,] 382 265 [3,] 317 471 [4,] 169 465 [5,] 577 333 $Andromeda_maya2 x y [1,] 173 507 [2,] 540 395 [3,] 268 143 [4,] 346 175 [5,] 489 91 I want to be able to write a data.frame like

hi I need help with list object. I have a list object > a <- c('apple','orange','grape') > b <- c('car','truck','jeep') > c <- list(a,b) > names(c) <- c('fruit','vehicle') > c $fruit [1] "apple" "orange" "grape" $vehicle [1] "car" "truck"

Dear group, I have a data.frame (d1) with various elements and a matrix (m1) created with NA (or 1s). I want to read each row,column in d1 and fill its numeric value in m1. Could some one help me because I have 130K rows and 500 column data.frame object and I was told that a for loop will take a long time. Thank you. > r1 <- c("A","A","B","B")

I have not had a great amount of success installing/updating packages from the "Packages" menu of Rgui under Windows XL. (Except for installing from loacal zip files.) But I am not asking for help in using these facilities because I prefer to keep a folder of package zip files. On the other hand I do find it tedious having to right-click "Save link as" on every individual

I hope this time I'm using the "iris" dataset correctly: ir <- rbind(iris3[,,1], iris3[,,2], iris3[,,3]) lir <- data.frame(log(ir)) names(lir) <- c("a","b","c","d") I'm trying to understand the meaning of expressions like "~ a+b+c+d", used with princomp, e.g. princomp(~ a+b+c+d, data=lir, cor=T) By inspection, it

Hello Group, What is the meaning of the error. is there any place to look for this. I guess 'atomic' seems to be OOP related concept. thank you srini

hello: I have 3 data.frame objects. First df object: Of dim (149,31). Columns 2:31 are marked as T1..T14 and N1..N16. Name T1 T2 N1 T3 N2 N3 N4 T4 mu1 10 10 9 10 9 9 8 10 mu2 11 11 9 11 9 9 9 11 ... muN 12 12 9 11 9 9 8 12 Second df object: of Dim (50000,31). Columns 2:31 are maked as T1...T14 and N1..N16.

hi: I have matrix with dimensions(200 X 20,000). I have another file, a tab-delim file where first column variables are row names and second column variables are column names. For instance: > tmat Apple Orange Mango Grape Star A 0 0 0 0 0 O 0 0 0 0 0 M 0 0 0 0 0 G 0 0 0 0 0 S 0 0 0 0 0

Hi list, I'm writing a little survey application, and surveys are generated dynamically. I use form_remote_tag and AJAX to submit the form to a method 'submit' in my 'survey' controller. The view generates the form as: <tr> <td>Question 1?</td> <td><input id="resultset_1" name="resultset[1]" size="30"

hello: I am very confused when it comes to list operations in R. I seek help in the following problem. I have two different vectors myIDs - a character vector with no names to their elements x2 - another character vector derived from unlisting a list where an element has both a name and value. I am not happy the way x2 is with names and values to every element. > myIDs[1:10] [1]

Dear all: I have a character object x with ' (single-quote) character. x <- c('"hydrolase activity","actin binding","3',5'-cyclic-nucleotide phosphodiesterase activity") I want to write a function that will identify ' and replaces with \' myf <- function(term){ if (grep("'",term)) {

It might be a bit faster to do matrix indexing: R> tbm <- as.matrix(tb) # turn it into a character matrix R> tmat[cbind(match(tbm[,2], rownames(tmat)), match(tbm[,1], colnames(tmat)))] <- 1 > tmat Apple Orange Mango Grape Star A 1 1 1 0 0 O 1 1 0 0 0 M 0 0 1 0 0 G 0 0 0 0 0 S 1 1 1 0

First.jsp ------------------ <jsp:usebean id="db" class="db.dbClass" scope=session/> <html> <body> <form action="MyAction.jsp" method="post"> <% ResultSet rs=db.executeQuery("select no,name from mytable"); while(rs.next()) {%> <input type=checkbox value=<%=rs.getString(1)%> onclick=callJs(<

Hi, by switching to MySQL from SQLite, it fixed the problem. I ran rdebug on it and it is trying to call I ActiveRecord::Base.connection.begin_db_transaction. from ActiveRecordSafetyListener.scenario_started. I don''t think SQLLite likes transactions. Ed On Nov 15, 2007 10:56 AM, Ed Howland <ed.howland at gmail.com> wrote: > If I run the story stand-alone, I get: > ruby

Hi, I''m using an sqlite3 database with Rails and have some trouble running unit tests What I''ve done is * rails my_app * edited database.yml to use sqlite3 adapter, db/my_app_development and db/my_app_test * ruby script\generate model user * edited model class User < ActiveRecord::Base validates_presence_of :name validates_uniqueness_of :name end *

I''m now using the 0.8.0 RC1 gem and have the same version of rspec and rspec_on_rails checked out into my vendor/plugins directory. I''m having a problems with controllers... I''ve generated a controller using the ./script/generate rspec_controller MyController. When I try to run the rake spec:controller task I get the following: euclid% rake spec:controllers (in

While writing a function that includes placing grid lines at the same position as the axis ticks, I found that the axis* functions don't return anything. Thus I have had to copy the appropriate function, removing the call to axis() and adding a line to return the tick positions. Is there a more elegant way to determine the tick positions on an axis? Thanks. Jim (normally bitwrit at