similar to: question about date's

Displaying 20 results from an estimated 500 matches similar to: "question about date's"

2005 Oct 20
5
search a value in variables dataset
Dear R-list, I have a dataset, say (the real dataset is 20 columns,110200 rows). > my.reducedID V1 V2 V3 V4 V5 V6 V7 V8 V9 [1,] 1 0 0 1 14 3 1 0 2 [2,] 2 0 0 1 14 3 1 0 2 [3,] 0 1 0 1 14 2 1 0 2 [4,] 0 0 1 1 14 3 1 0 2 [5,] 0 1 1 0 14 2 1 0 2 [6,] 0 0 0 1 14 3 1 0 2 [7,] 0 0 0 1 0 3 1 0 2 [8,] 0
2005 Oct 12
1
arima with R
Hi, I'm using R for some arima models. In the past I used for arima models Rats and Tsp. Using the R arima function, I get only the statistics sigma^2 and log likelihood; with Rats and Tsp it is possible to obtain more statistics, such as R, R square, Durbin Watson, standard error, etc. Is it possible using R to have the statistics mentioned? My best regards,
2005 Oct 23
1
factorizing many columns of a dataframe
Hi guys, I have a large number of columns of a dataframe that I want to apply a common factorization to; the columns are all numeric and the factorization collapses some of these values into common groups (labels). How can I do this systematically? Is there an analog to sapply that can pass columns as vectors to FUN? Thanks in advance, Gregory Gentlemen ---------------------------------
2005 Oct 20
2
information about Loess
Hello, I'm currently using a tool that provides a Loess fitting, but I obtained results that are slightly different from those provided by R implementation of the Loess. That's why I would like to know if you could give me a source (bibliography or web) that explains in a clear way each step of the algorithm, with the possible options to choose, etc.. in order for me to understand those
2005 Jul 27
2
logistic regression: categorical value, and multinomial
I have two questions: 1. If I want to do a binomial logit, how to handle the categorical response variable? Data for the response variables are not numerical, but text. 2. What if I want to do a multinomial logit, still with categorical response variable? The variable has 5 non-numerical response levels, I have to do it with a multinomial logit. Any input is highly appreciated! Thanks! Ed
2005 Dec 06
7
R is GNU S, not C.... [was "how to get or store ....."]
======= 2005-12-06 22:16:17 伳侜佋佢伬伌佇伵佒佇佇伌伒伬仯伜======= >Martin Maechler a 侀crit : > >> please, please, these trailing ";" are *so* ugly. >> This is GNU S, not C (or matlab) ! >> >> but I'll be happy already if you could >> drop these ugly empty statements at the end of your lines... > >May I disagree ? >I find missing ";" at
2005 Jul 26
3
text on some lines
Hi, I would like to write text on 2 lines for example. For example, if you have a long sentence and you want to cut it at the 45 caracter and put the continuation underneath! Is it possible? Thanks Sabine --------------------------------- [[alternative HTML version deleted]]
2005 Oct 07
3
index question
All, I'm having a problem selecting directly from a vector. I've written ways to do this indirectly, but I'd rather do it directly and didn't see this in the manual. Essentially, I have: > group.label.new [1] 7 9 6 1 10 4 8 3 2 5 > junk [1] 1 2 > group.label.new[junk && 8:10] [1] 7 9 6 1 10 4 8 3 2 5 I'd like to select the elements
2005 Oct 16
3
Sorting a data frame by one of the variables
Dear all, I have a date frame like this: X Y Z 22 24 4.3 2.3 3.4 5.3 ..... .... 57.2 23.4 34 What my purpose is: to sort the data frame by either X, Y or Z. sample output is (sorted by X) : X Y Z 2.3 3.4 5.3 ..... ...... 22 24 4.3 ... 57.2 23.4 34 I have no idea how to use sort, order or rank functions. Please help me out. Thanks! Leaf
2005 Aug 03
1
abline and linearity over groups
Dear R users, please can you help me understand the behaviour of abline using function lm. I'm trying to learn linearity over groups. So I make three groups with 10 values each: test=data.frame(cbind( l=c(rnorm(10,0,30),rnorm(10,100,30),rnorm(10,200,30)), t = c(rep(0,10), rep(1,10), rep(2,10)) )) when I do: plot(test$l~test$t) abline(lm(test$l~test$t)) the abline is a straight line
2005 Jul 28
4
Running Internet Explorer from Withing R
Good morning, Is it possible to open an html file using IE but from within R? I wrote a small function to generate tables in html but I'd like to write another function to call IE and open the html file. Thanks, Walt Paczkowski ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 (V) 609-936-8999 (F) 609-936-3733
2005 Oct 15
2
batch file execution
I am new to R and really like to get a handle of basics in short period of time. What I am trying to do is get myself a list of must-do's (read in data, batch execution, delimiters, basic modeling commands) in R as in Stata or SAS. I am just wondering how to execute a R batch file in RGui. Suppose I have a script file (like do file in stata, or sas file in SAS) under c:\whatever.R, how can I
2005 Aug 03
3
prcomp eigenvalues
Hello, Can you get eigenvalues in addition to eigevectors using prcomp? If so how? I am unable to use princomp due to small sample sizes. Thank you in advance for your help! Rebecca Young -- Rebecca Young Graduate Student Ecology & Evolutionary Biology, Badyaev Lab University of Arizona 1041 E Lowell Tucson, AZ 85721-0088 Office: 425BSW rlyoung at email.arizona.edu (520) 621-4005
2005 Oct 24
2
GAM and AIC: How can I do??? please
Hello, I'm a Korean researcher who have been started to learn the "R" package. I want to make gam model and AIC value of the model to compare several models. I did the GAM model, but there were error for AIC. SO, how can I do? pleas help me!!! I did like below; > a.fit <- gam(pi~ s(t1r), family = gaussian(link="log")) >
2005 Nov 21
5
SPSS and R – do they like each other?
Hi, I wonder how well SPSS and R communicate, because I need SPSS but would like to do some data manipulations in R. However I am very afraid of never ending import-export-complications ? especially with all those labels and extra information my SPSS files contain. My data come from SPSS and have to be exported to SPSS again (because I need to produce special output tables, which would be hard to
2005 Oct 18
6
p-value calculation
hello everybody i'm very new at using R so probably this is a very stupid question. I have a problem calculating a p-value. When i do this with excel i can use the method CHIDIST for 1.2654 with 1 freedom degree i get the answer 0.261 i just want to do the same thing in R but i can't find a method. can somebody help me friendly regards richard
2005 Nov 27
4
Counting the occurence of each unique "charecter string"
LS, I would really like to know how to count the frequency/occurrence of chachters inside a dataset. I am working with extreemly large datasets of forest inventory data with a large variety of different species inside it. Each row inside the dataframe represents one individual tree and the simplified dataframe looks something like this: num species dbh 1 sp1
2005 Nov 27
4
Counting the occurence of each unique "charecter string"
LS, I would really like to know how to count the frequency/occurrence of chachters inside a dataset. I am working with extreemly large datasets of forest inventory data with a large variety of different species inside it. Each row inside the dataframe represents one individual tree and the simplified dataframe looks something like this: num species dbh 1 sp1
2005 Oct 20
4
creating a derived variable in a data frame
Hello, I have read through the manuals and can't seem to find an answer. I have a categorical, character variable that has hundreds of values. I want to group the existing values of this variable into a new, derived (categorical) variable by applying conditions to the values in the data. For example, suppose I have a data frame with variables: date, country, x, y, and z. x,y,z are
2005 Jun 13
5
slow loading with lme4
it takes a long time to load the lme4 package.anyone else encounter this problem? > system.time(library(lme4)) 佋佖伻侂佇佽佉仾伒伳伋佁伡伃伆侟仯伜Matrix 佋佖伻侂佇佽佉仾伒伳伋佁伡伃伆侟仯伜lattice [1] 19.90 0.30 25.56 NA NA > version _ platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status Patched major 2 minor