similar to: Subsetting dataframe with missing values

Hi, I am trying to assign values to records based conditionally on other records within a dataframe. For example, in the following dataframe the "NA" value in dat$age would be replaced if the age status for that individual and specific year can be found in another record. Ideally this would then also assign the same age status if the individual is recorded in a later year.

Good day all, My statisticians want an R procedure that will produce grouped stacked barplots. Barplot will stack or group, but not both. The ftable function can produce a table of the exact form they want, but the barplot doesn't show all the divisions we want. For an example, here's the sample from the help file for "ftable:" data(Titanic) ftable(Titanic, row.vars = 1:3)

Hi, I am trying to remove a series of records from a large dataframe. The script I have written works fine but takes a long time to run. Can anyone suggest a quicker way to do this? Here is an example of the code I've written. The end result of this bit of code would be a dataframe with any records relating to ID 1 or ID 4 removed: #dataframe id <- c(1,1,1,1,2,2,2,2,2, 3,3,3, 4,4)

Dear expert friends, I'm pretty young of this world and my question at your eyes can be petty easy. I'll need to change the name of the levels inside a column of my data-frame levels(ind.davis$Ageclass) <- c("adult", "Juvanile", "sub-adult") names(ind.davis$Ageclass) <- c("Adult", "Juvenile", "Sub-adult") that is what I

Leonardo-- R-help can be a very useful resource. Some suggestions to use it well: 1. use an informative subject line, not "help" 2. include a "minimal working example:" a *little* data, the code that, with those data, reproduces your problem, and the error message that resulted. As to your particular question, at this point I can only guess, but for starters it would

Hi R users, I am trying to extract some attributes (age, sex, area) from dataframe "AB" that has 101,269 observations of 28 variables to dataframe "t2" that has 47 observations of 6 variables. They share a column called "id", which is a factor with 47 levels. I want to end up with a dataframe that has 47 observations of 9 variables (the original 6 variables of t2,

Hello, I'm using the eclat function of the arules package (1.0-6) for the identification of frequent itemsets. I need the tidLists, but if I set in the function tidLists=TRUE R crashes (Windows XP Professional SP3, 32 bit, R version 2.12.1 (2010-12-16), reproducible on two different computers) with two different error messages or non at all. Minimum examples are: library(arules)

Hallo Everybody How do you specify arguments for a function used within another function? Here is my problem: I am reconstructing a calculator for the burden of disease due to air pollution from publications and tools published by the WHO. The calculations make use of published dose-response relationships for particular health end-points. This is then applied to populations with known or

Dear users of metafor, I am working on a meta-analysis using the metafor package. I have a excel csv database that I am working with. I am interested in pooling the effect measures for a particular subgroup (European women) in this csv database. I am conducting both sub-group and meta-regression. In subgroup-analyses, I have stratified the database to create a separate csv file just for European

Hi, I am having some trouble using R 2.13.1 for generating a pmml object of of class "c('randomForest.formula', 'randomForest')" I see that these methods are available: > methods(pmml) [1] pmml.coxph* pmml.hclust* pmml.itemsets* pmml.kmeans* pmml.ksvm* pmml.lm* pmml.multinom* pmml.nnet* pmml.rpart* [10] pmml.rsf* pmml.rules* pmml.survreg*

ScopedProxy uses with_scope and proxy objects to make it easy to find and count different types of records. Example: class Person < ActiveRecord::Base scoped_proxy :minor, :conditions => ''age <= 17'' scoped_proxy :adult, :conditions => ''age >= 18'' scoped_proxy :old, :conditions => ''age >= 70'' scoped_proxy :male,

Hi , can any one help in this problem According to some study, the height for Northern European adult males is normally distributed with an average of 181 centimeter and a standard deviation of 7.3 centimeter. Suppose such an adult male is randomly chosen. Let X be height of that person. The next 3 questions correspond to this information. The answer may be rounded up to 3 decimal places of the

Hello, I have a user table linked to the login code that was in the "Agile" book. When someone signs in they are assigned to a group, such as "adult" or "teenager". I would like to take this group string and reference a table with "find_by_sql()" so that: (group.capitalize).find_by_sql() would work (and, of course, in the select request in the

I am using the "predict" function on a support vector machine (svm) object, and I don't understand why I can't predict on a dataset with more observations than the training dataset. I think this problem is a generic "predict" problem, but I'm not sure. The original svm was fit on 50 observations.

I'm not sure how to best explain what I am after but here goes. I have a data frame with 2 geographical factors. One is the major region the other is the component regions. I am trying to process all the regions at the same time without using "for". So I need (think, I do) a list of matrices each structured according to the number of subregions within each region. So is there a

Hello, I may need to set up soon a Linux VPS, to be used almost exclusively for handling email (as in "2GB of disk space, 2GB/month of bandwidth would be surely enough") with a fully customized postfix/procmail/dovecot setup. I'd prefer to use Centos, which I already use and know. One reason why I'm asking this here is that I'd really like to be sure, before I go for it,

This is the best collection of minds I can think of on this topic, that's why it is on this list. I think it is too subjective for stackoverflow. So here is the problem: The community center has multiple computers for the children (and adult students) to use. These computer are always donated and the hardware is all different. Currently the systems are running Windows (but this may change).

On Wed, Jun 28, 2017 at 11:53 PM, Peter Lawrence via llvm-dev < llvm-dev at lists.llvm.org> wrote: > Philip, > email responses are varied, some say what you do, but > others say give the guys a chance and listen to what he has to say. > > I say that I have a mild personality disorder such that I can’t say > things in politically correct style, and that this is a

On Thu, Oct 17, 2013 at 7:27 PM, Timothy Clark Music <timothyclarkmusic at me.com> wrote: > wow, that's write, bash me for no reason. > apparently you don't realize the hours i've been putting into this. > you have given me the ability to stream on your station and i appreciate > that. > however, i don't like the idea of someone who i hardly know going into

On Thu, Oct 17, 2013 at 7:27 PM, Timothy Clark Music <timothyclarkmusic at me.com> wrote: > wow, that's write, bash me for no reason. > apparently you don't realize the hours i've been putting into this. > you have given me the ability to stream on your station and i appreciate > that. > however, i don't like the idea of someone who i hardly know going into