Displaying 20 results from an estimated 1000 matches similar to: "Assignment working differently inside ifelse()"
2011 Jan 23
2
Ordering box plots
Hello all, I want box plots by group to display in order of increasing
mean (or median) of each group but can't seem to figure it out and
couldn't find anything on R-seek, either.
My data looks like this:
meas unit sid grade rsprti
1 2.24 1002 99999902 NA 0.8600000
2 3.04 1007 43589520 3 0.9400000
3 4.95 2002 39910470 5 1.5300000
4 2.24 2002 39986280 5
2010 Feb 19
3
Omitting members of a sequence
Hello, this is just a point of curiosity with me. I want a sequence of
numbers from 64 to 70, omitting the 2nd and 4th numbers. I can do it
these ways:
> seq(64, 70)[-c(2, 4)]
[1] 64 66 68 69 70
> foo <- 64:70
> foo[-c(2, 4)]
[1] 64 66 68 69 70
But how come this doesn't work?
> 64:70[-c(2, 4)]
[1] 64 65 66 67 68 69 70
Just wondering.
--
Stuart Luppescu -=- slu .at.
2007 Aug 07
1
lmer() : crossed-random-effects specification
Dear all,
I want to estimate a crossed-random-effects model (i.e., measurements,
students, schools) where students migrate between schools over time.
I'm interested in the fixed effects of "SES", "age" and their
interaction on "read" (reading achievement) while accounting for the
sample design. Based on a previous post, I'm specifying my model as:
fm1 <-
2012 Mar 22
2
Order of terms in formula changes aov() results
Hello, This one is very perplexing. I have teacher observation data,
with factors teacher ID, observer ID, component, grade and subject. When
I do this,
aov(data=ratings.prin.22, rating ~ obsid.f + tid.f + subject.f + grade.f + comp.f)
I get this:
Terms:
obsid.f tid.f grade.f comp.f Residuals
Sum of Squares 306.23399 221.38173 1.70000 14.52831 279.05780
Deg. of
2010 Apr 06
2
help in function in R akin to macro in SAS
Dear Whom it may concern,
I need help to figure the "macro" function in R: I need to plot the
different data sets by a plotxyf function, I want the title to be different
for different data set.
# get the data set
final.xyf<- xyf(data=as.matrix(my.final),
Y=classvec2classmat(final$outcome), xweight = 0.5, grid=somgrid(5, 4,
"hexagonal"))
#plot function
2011 Apr 21
1
Stymied by plyr
Hello, This is my first time trying to use plyr, and I'm getting
nowhere. I have teacher ratings data (1:4), on 10 components, by
external observers and internal observers, in schools in areas. I want
to calculate the percentage of each rating given on each component, by
each type of observer, within each school, within each area. The data
look like this:
unit area ext.obs rating comp
11
2011 Nov 20
1
Need help with table() and apply()
Hello, I am having trouble getting counts of values in rows of a data
frame. I'm trying to use apply, but it's not working.
This gives a sample of the kind of data I'm working with:
rating.1 <- factor(sample(1:4, size=10, replace=T), levels=1:4)
rating.2 <- factor(sample(1:4, size=10, replace=T), levels=1:4)
rating.3 <- factor(sample(1:3, size=10, replace=T), levels=1:4)
2002 Aug 02
3
I know this is wrong, but why?
My mind has become corrupted by having to use SAS too much. I wanted to
calculate the difference of elements of two vectors if the signs are the
same. I tried it the corrupted way first:
if (effects1[,3] < 0 & effects0[,3] < 0) {
imprv1 <- effects0[,3] - effects1[,3]
} else if (effects1[,3] > 0 & effects0[,3] > 0) {
imprv1 <- effects1[,3] - effects0[,3]
} else {
2010 Jun 29
2
Conditionally constructing columns in a data frame
Hello, I have to construct 5 new columns in a data frame depending on
the value of another of the columns in the data frame. The only way I
could figure out to do this was to subset the data frame five times, do
the variable construction, and then rbind the subsets back together.
Here's part of the code I used:
read001 <- read[read$existstr=="001",]
read001$era1end <- NA
2007 Apr 18
1
[Bridge] Problem loading bridge.o
Hello, I want to add wireless capability to my Gentoo-linux based
firewall/router at home, so I bought a Netgear MA311 PCI and installed
the hostap package. I load the hostap_pci module and the wlan0 interface
comes up fine. I can detect the signal from a wireless enabled laptop.
Now I'm thinking I'm going to bridge the wlan0 interface and the eth1
interface, and run the firewall with br0
2010 Sep 01
5
[semi-OT] Using fortune() in an email signature
Hello, As you can see from my signature in this message, I use the R
fortune function to generate a fortune, which is then fed to the
signature program, which constructs a named pipe containing the
fortune-bearing sig, which is then included in mail messages. The
problem is that it's got extraneous junk in it and I can't figure out
how to get rid of it. This is the command that generates
2010 Jul 25
1
Left Outer Join 2 DF's on Multiple Conditions
Hi,
I am trying to execute the following SQL statement using two data frames:
tab1, tab2 : Two Tables
Select tab1.*, tab2.*, tab1.tobiiTime - tab2.ruiTime as timeDiff,
IFNULL(n-m, -9999999) as alwaysIncrement
FROM tab1
LEFT OUTER JOIN tab2 On tab1.data1 - tab2.mouseX = 0 And tab1.data2 -
tab2.mouseY = 0
I am trying to do the following in R:-
*#Getting error here:*
data
2002 May 19
3
How to shade part of a density plot
I'm trying to shade part of a density plot. The code I'm trying (using
the Old Faithful data as an example) is something like this:
# The Old Faithful geyser data
data(faithful)
d <- density(faithful$eruptions, bw = "sj")
plot(d)
polygon(d[d$x>4], col = "wheat")
I expected that the part of the curve to the right of 4 on the x axis
should be shaded, but nothing
2013 Feb 11
2
How to plot doubles series with different location using plotCI
Dear list
members,
I would
like to create two series of plotted mean values and error bars, yet with
different locations along the x-axis.
Plotting of
first series using plotCI with the standard arguments goes without any problem.
However I do not succeed to add the second series in the same plot, which
should be horizontally shifted from the first series along the x-axis. The “add=TRUE”
2011 Oct 29
1
Refresh tab content on click in JQuery UI Tabs
HI Guy''s
TAB1 and TAB2 have some radio button, checkbox and dropdown menu. When
TAB1 is selected, I have to switch to TAB2 and then back to TAB1 to refresh
the loaded content.
How to make TAB1 refresh loaded content when click on its tab?
*code is something like that*
<ul class="tabs">
<li><a *href="#tab1"*>Gallery</a></li>
2004 Oct 11
3
split and rlm
Hello, I'm trying to do a little rlm of some data that looks like this:
UNIT COHORT perdo adjodds
1010 96 0.39890 1.06894
1010 97 0.48113 1.57500
1010 98 0.36328 1.21498
1010 99 0.44391 1.38608
It works fine like this: rlm(perdo ~ COHORT, psi=psisquare)
But the problem is that I have about 100 UNITs, and I want to do a
2005 Jul 27
2
How to delete rows
Dear R-users,
I am very new to R, so maybe my question is very easy to answer.
I have the following table:
TAB1<-data.frame(Name,Number), "Name" and "Number" are all character
strings,
it looks like this:
Name Number
ab 2
ab 2
NA 15
NA 15
NA 15
cd 3
ef 1
NA 15
NA 15
gh 15
gh 15
I want to delete all the rows
2005 Oct 27
2
F tests for random effect models
Dear R-users,
My question is how to get right F tests for random effects in random effect models (I hope this
question has not been answered too many times yet - I didn't find an answer in rhelp archives).
My data are in mca2 (enc.) :
names(mca2)
[1] "Lignee" "Pollinisateur" "Rendement"
dim(mca2)
[1] 100 3
replications(Rendement ~ Lignee *
2005 Oct 28
2
Random effect models
Dear R-users,
Sorry for reposting. I put it in another way :
I want to test random effects in this random effect model :
Rendement ~ Pollinisateur (random) + Lignee (random) + Pollinisateur:Lignee (random)
Of course :
summary(aov(Rendement ~ Pollinisateur * Lignee, data = mca2))
gives wrong tests for random effects.
But :
summary(aov1 <- aov(Rendement ~ Error(Pollinisateur * Lignee), data =
2010 Jul 05
3
How to determine if R is 64 bit compiled under Unix-alike?
Under MacOS I had R64 executive and it was clear. Under Ubuntu, which I
do not have administrative rights to, there is only R executive. It
seems that I can allocate more than 3GB of memory, however not
everything seems to work the same/right as with R64 under MacOS.
Pms.