similar to: Splitting a dataframe by character vector

Displaying 20 results from an estimated 2000 matches similar to: "Splitting a dataframe by character vector"

2012 May 03
1
Simple plot loop
Trying to plot multiple lines from a simple matrix with headers (eight observations per column). I will be doing a number of these, with varying numbers of columns, and do not want to enter the header names for each one (I got frustrated and just wrote them out, which did work). Data reads fine, first plot is fine, but when i use the code at the bottom for a for i loop it tells me that x and y
2005 Jul 12
4
Calculation of group summaries
I know R has a steep learning curve, but from where I stand the slope looks like a sheer cliff. I'm pawing through the available docs and have come across examples which come close to what I want but are proving difficult for me to modify for my use. Calculating simple group means is fairly straight forward: data(PlantGrowth) attach(PlantGrowth) stack(mean(unstack(PlantGrowth)))
2006 Feb 26
2
subtotal, submean, aggregate
Dear All, I would like to make partial sums (or means or any other function) of the values in intervals along a sequence (spatial transect) where groups are defined. For instance: habitats<-rep(c("meadow","forest","meadow","pasture"),c(10,5,12,6)) observations<-rpois(length(habitats),2)
2002 Sep 11
2
fitting a linear mixed effects model
A non-text attachment was scrubbed... Name: not available Type: text/enriched Size: 1284 bytes Desc: not available Url : https://stat.ethz.ch/pipermail/r-help/attachments/20020911/e68e2ecc/attachment.bin
2011 Apr 28
1
using lme4 with three nested random effects
Hi all, I'm trying to fit models for data with three levels of nested random effects: site/transect/plot. For example, modelincrBS<-glmer(l.ru.ba.incr~shigo.av+pre.f.crwn.length+bark.thick.bh+Date+slope.pos.num+dens.T+dbh+leaf.area+can.pos.num+(1|site/transect/plot), data=rws30.UL, family=gaussian, na.action=na.omit) but I get the following error: Error: length(f1) == length(f2) is not
2011 Nov 12
1
Subsetting data leads to funky plots
I'm trying out a basic plot, but something about the way I subset my data leads to problems with the plot. Here is the first bit of my data set year,date,location,quadrat_juvenile,photo_location,photo_exists,genus,count,divers 2005,2005-04-30, 1 Fringing Reef,1, 1 Fringing Reef Coral Transect Pole 1-2 Quadrat 1,t,Acanthastrea,0,HP+MEM 2005,2005-04-30, 1 Fringing Reef,1, 1 Fringing Reef
2003 Feb 12
1
Na/NaN error in subsampling script
R-help readers, I''m having a problem with an R script (see below), which regularly generates the error message, Error in start:(start + (sample.length - 1)) : NA/NaN argument , for which I am unsure of the cause. In essence, the script (below) generates the start and end points for random subsamples from along a vector (in reality a transect (of a given length,
2010 Aug 13
1
loop for inserting rows in a matrix
Dear R friends, I have a matrix with 2060 rows and 41 columns. One column is Date, another is Transect, and another is Segment. I want to ensure that there are 9 Transects (1 to 9) for each Date, and 8 Segments (1 to 8) for each Transect in the matrix, by inserting rows where these are missing. I am new to coding, but am trying to write a loop which checks if each of the transects already
2008 Nov 20
9
create a file only if directory exists
I''m trying to create a virtual host file only if the document root directory exists. It doesn''t look like puppet is seeing the require metaparameter. Currently, the file is being created whether or not the document root directory exists. What is the best way to currently do this? I''m trying to create a file called site1.conf in /apps/apache/conf.d only if
2015 Nov 16
2
Secure dynamic update failure with internal DNS
2015-11-10 22:07 GMT+08:00 James <lingpanda101 at gmail.com>: > I't appears all versions of Samba 4.2.X allow secure updates. It's >> transitioning to any version of Samba 4.3.X that prevents secure >> updates. Looking at the Wireshark captures of a successful update >> >> https://www.cloudshark.org/captures/79e72c42de44 >> >>
2005 Feb 09
2
gl and different number of replications
I am trying to use the function gl (generate levels), and would like to make levels with different number of replications. Does anyone know how to generate different number of replications in each level? Something like: [1] Site1 Site1 Site1 Site1 Site1 Site1 Site1 [8] Site2 Site2 Site2 Site2 Site2 Thanks in advance -- Rog?rio R. Silva MZUSP http://www.mz.usp.br Linux/Debian User # 354364
2008 Mar 20
1
minimum distances
Hi, I have a question about computing shortest Euclidean distances between two data frames of spatial points... I have 2 dataframes (not yet converted to spatial class) >Sewers<-data.frame(x=c(10,20,35,50),y=c(100,150,200,300)) >transect <- data.frame(x=seq(from=0, to=50, by=1),y=seq(from=100, to=150, by=1)) I would like to be able to compute the shortest distance from the
2012 May 09
1
Client got empty email from dovecot
Hi, I built a mail server with qmail + vpopmail + dovecot , the qmail and vpopmail worked well, until the dovecot was installed. Client always get empty email, I have try some solutions from google, neither of then can solve the problem. Here is the detailed information of logs, version, and output of 'dovecot -n', please help, thanks.
2011 Oct 09
3
ANOVA from imported data has only 1 degree of freedom
Hi, I'm trying to analyse some data I have imported into R from a .csv file but when I carry out the aov command the results show only one degree of freedom when there should be 14. Does anyone know why? I'd really appreciate some help, the data is pasted below. /The imported table looks ike this this:/ Order Transect Sample Abundance 1 Coleoptera 1 1 13 2
2011 Jan 17
1
filling in datasets of differing lengths
g''day all, I need help with this please. I have a dataset of site names and years they were trapped in (a subset of it is bs, below) and a dataset of sites that actually caught animals (subsetted as brep, below). I need to add to brep, a row with a zero in the classcount column, for every year each site was trapped but caught nothing. so for Site 1, I need to add rows that say
2015 Nov 19
1
Samba 4.3.0 and DNS entries missing for DCs
On 11/19/2015 9:44 AM, Thierry Hotelier wrote: > hello, > we've just upgraded from samba 3.6.6 to samba 4.3.0. We are using > INTERNAL as dns backend. We have 1 domain and 6 DCs on 5 different > sites. Replication between DCs is ok as we can see with "samba-tool > drs showrepl". We configured them like it is described on the wiki and > used the RSAT tool
2011 Nov 18
1
One-way repeated measures ANOVA
Hi all, I'm trying to run a repeated measures ANOVA on some univariate ecological data that was collected over two growing seasons. I ran the test using the methodology found on this website: http://rtutorialseries.blogspot.com/2011/02/r-tutorial-series-one-way-repeated.html Upon running the actual ANOVA I got this error message: "> rmanova=anova(yearmodel, idata=yearframe,
2011 Feb 03
3
R Data Manipulation - Transposing Data by a Given Column, Like User_ID
Hello, I'd like to transpose data to create an analysis-friendly dataframe. See below for an example, I was unable to use t(x) and I couldn't find a function with options like PROC TRANSPOSE in SAS. The ideal solution handles variable quantities of SITE - but beggars can't be choosers. :-) Thank you in advance, Mike ## INPUT DATA USER_ID<-c(1,1,1,2,2,2,3,3,4) SITE
2012 Dec 29
3
Samba4 AD DC Sites / Rename Default-First-Site-Name and internal DNS
Hello, I'm running a few tests here with two locations. site1: server-site1.gsg.local subnet 192.168.200.0/24 site2: server-site2.gsg.local subnet 192.168.190.0/24 both are connected via VPN. I migrated an samba3 domain at server-site1 it gets Default-First-Site-Name assigned. Then I joined the new samba4 domain withe server-site2. Both servers work and i can join and access them with
2008 Aug 17
1
before-after control-impact analysis with R
Hello everybody, In am trying to analyse a BACI experiment and I really want to do it with R (which I find really exciting). So, before moving on I though it would be a good idea to repeat some known experiments which are quite similar to my own. I tried to reproduce 2 published examples but without much success. The first one in particular is a published dataset analysed with SAS by