similar to: Sorting a matrix

Hi, how can I treat data organised in classes and frequencies? Ex. class frequency 20-23 9 23-25 7 26-28 5 29-31 5 32-34 3 Thanks Angelo Scozzarella

Hi, Why this function doesn't work? function (x) { if (is.factor(x)) { if (!is.ordered(x)) { warning("La mediana non si puo' calcolare!!!") return(NA) } me <- median(unclass(x)) if (me - floor(me) != 0) { warning("Mediana indeterminata") return(NA) } else

Hi, How can I make an ANOVA if I haven't got all data set but I know the numbers of subjects for each group, the mean and di standard deviation for each group? Thanks Angelo Scozzarella

Dear R friends, I'd like to generate random sample (variable size and range) without a specified distribution but with given mean and standard deviation. Could you help me? thanks in advance Angelo

Hi, I want to calculate the T-Test from means and sd. How can I do it? Thanks Angelo Scozzarella

Dieter Menne pointed out that the (small) xml attachment didn't make it. Here is an in-line version (see end of message). Let's hope it works this time. I'm struggling with interpreting XML files created by ADODB as data.frames and I'm looking for advice. Note: This xlm contains a result set which comes from a rectangular data array. I've been trying to play with

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Hi all, Here''s my general setup on the specific template I''m having issues with: will_paginate for pagination custom methods for sorting 1-form for team search 1-form for search by date When searching for a team for instance, the url returned will be: /rushing_offenses?search=Florida When searching by date, the url returned will be: /rushing_offenses?compiled_on=2009-07-02

I am using R-2.10.1 binary from CRAN on a WinXP Pro system. I also use SAS v9.2 on the same box. I just started using the SAS ODBC driver that comes with version 9 of SAS. I have been able to set up an ODBC source for SAS datasets using the driver, and then with RODBC I am able to read a sample SAS dataset. > library(RODBC) > ch <- odbcConnect('sasodbc', believeNRows=FALSE)

Hi all I have the next data frame year STOD SLAGNR TAL TALT TALVEKT 1 2002 2120006 57 1 NA 1 2 1997 97030032 57 NA NA NA 3 1997 97030071 27 1 NA NA 4 1997 97030005 57 1 NA NA 5 1997 97020127 60 NA 1 NA 6 2001 1160025 27 1 NA 1 7 1998 98020069 60 1 NA NA 8

Dear ALL, I fear my question has already been answered many times before, but I haven't fund that in archives... I am working on spatial datasets and, in most arrays I'm handling, there are two columns dedicated to (x,y)-coords. For different reasons - notably to draw image() plots, I need to have these two columns sorted in increasing order. But sort() and order() seem to apply to

Hello, I have the following task I'd like to accomplish: A file contains 5 columns of data (several hundred rows), let's call them a, b, c, d and e (ie these are their column headers) I also have a set of definitions, e.g., f = a + b g = a * 3 h = c + d etc. I would like to write out a new .rda file that contains columns a b c d e f g h etc. I.e. , the original data plus new columns

I'm struggling with interpreting XML files created by ADODB as data.frames and I'm looking for advice (see attached example file). Note: This file contains a result set which comes from a rectangular data array. I've been trying to play with parameters to the xmlToDataFrame function in the XML package but I dont get it to extract the data frame. This is what the result should look

Hi all, I wonder if there's any way to reshuffle the text collection by the document meta values. For instance, if I have 5 documents that correspond to the following meta data: MetaID Sex Age 0 M 38 0 M 46 0 F 24 0 F 49 0 F 33 Can I reorder the text documents based on the ascending order of age? Thank you very much!! -- View

Hallo, I have got an existing data frame and want to add a new column. The existing data frame was created like this: > df <- rbind( c("Fred", "Mary", 4), c("Fred", "Mary", 7), + c("Fred", "Mary", 9), c("Barney", "Liz", 3), + c("Barney", "Liz", 5) ) > df

Ok, I''m sure this has to be something stupid that I''m doing (or not doing), but I can''t seem to get things to order by the specified column. class List < ActiveRecord::Base has_many :list_items, :order => "orderby" The error I get back when trying to save the link is: Unknown column ''position'' in ''order clause'':

Hello everyone Not strictly an R question but close... hopefully someone will be able to help. I wish to compare the switchpoints in two switchpoint regressions. The switchpoints were estimated using the segmented library running in R, and I have standard errors for the estimates. I initially thought I could just bootstrap confidence intervals for the difference between the switchpoints,

Hello all I'm trying to do a simulation that involves identifying the minimum point between two peaks of a (usually) bimodal distribution. I can do this easily if there are only two peaks: CnBdens<-density(Ys/Xs) #probability density function for ratio of Ys to Xs for(p in 1:512) ifelse(CnBdens$y[p]>CnBdens$y[p-1],peak1<-p,break) #identifies first peak in probability

Hi: Suppose that I have a data frame as below x1 x2 x3 ... x10 wk1 wk2 ... Wk208 (these are the column names) For each record, x1, x2, x3 ... x10 are attributes. and wk1, wk2, ..., wk208 are the sales recoreded for this attribute combination. Suppose that now, that I want to do the following 1. Merge the data frame so that I have a new data frame grouped by values of x2 and x3 (for example).

Dear R users, I have the following data frame: PROCHI date_admission 2 CAO0000713 1999-12-11 4 CAO0000713 1999-10-25 21 CAO0001743 1989-05-04 25 CAO0001743 1996-09-12 26 CAO0001743 1989-05-17 27 CAO0001743 1987-09-17 28 CAO0001743 1987-09-19 29 CAO0001743 1988-01-27 36 CAO0001747 2004-03-21 38 CAO0001747 2004-03-22 39