Displaying 20 results from an estimated 1000 matches similar to: "Question about which kind of plot to use"
2012 Jul 06
4
differences between survival models between STATA and R
Dear Community,
I have been using two types of survival programs to analyse a data set.
The first one is an R function called aftreg. The second one an STATA
function called streg.
Both of them include the same analyisis with a weibull distribution. Yet,
results are very different.
Shouldn't the results be the same?
Kind regards,
J
--
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2013 Jul 18
1
Bland Altman summary stats for all column combinations
Hello,
I have the following data.frame
structure(list(Study = structure(c(1L, 2L, 3L, 4L, 5L, 6L, 7L,
8L, 9L, 10L, 11L, 12L, 13L, 14L, 15L, 16L, 17L, 18L, 19L, 1L,
2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L, 11L, 12L, 13L, 14L, 15L,
16L, 17L, 18L, 19L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L,
11L, 12L, 13L, 14L, 15L, 16L, 17L, 18L, 19L, 1L, 2L, 3L, 4L,
5L, 6L, 7L, 8L, 9L, 10L, 11L, 12L, 13L, 14L,
2006 Nov 25
3
Multiple Conditional Tranformations
Greetings,
I'm learning R and I'm stuck on a basic concept: how to specify a
logical condition once and then perform multiple transformations under
that condition. The program below is simplified to demonstrate the goal.
Its results are exactly what I want, but I would like to check the
logical state of gender only once and create both (or any number of)
scores at once.
2010 Oct 20
1
Adding Legend about two quantile lines at ggplot
Hi, all.
I'd like to add legend on my graph but I can't. My code is follows.
library(ggplot2)
score1<-rnorm(100,0,5)
score2<-rnorm(400,10,15)
mydata<-data.frame(score1,score2)
ggplot(mydata,aes(y=score2,x=score1))+geom_point()+stat_quantile(quantiles=c(0.50),col="red")+stat_quantile(quantiles=c(0.90),col="blue",size=2)
I like to add legend indicating the
2010 Jul 28
1
specifying an unbalanced mixed-effects model for anova
hi all - i'm having trouble using lme to specify a mixed effects
model.
i'm pretty sure this is quite easy for the experienced anova-er, which
i unfortunately am not.
i have a data frame with the following columns:
col 1 : "Score1" (this is a continuous numeric measure between 0 and
1)
col 2 : "Score2" (another continuous numeric measure, this time
bounded between 0
2009 Sep 12
1
How to visualize paired t-test results?
I would like to know if you have any suggestions how to visualize the
results from a paired t-test (see the example data below). I tried to
produce plots that show the mean and CI's from the original data and the
estimate of the difference between means and the confidence intervals (see
below) from the t-test. I really don't know what would be the best way to
graphically display the
2013 Jan 03
2
Sas by function in R
Hello,
It's an alternative to use SAS by function in R?
I want to plot d histograms by plot.from example bellow:
Thank you!
plot d
1 1 16.3
2 1 25.0
3 1 57.8
4 1 17.0
5 2 10.8
13 2 96.4
17 3 76.0
18 3 32.0
19 3 11.0
20 3 11.0
24 3 106.0
25 3 12.5
21 4 19.3
22 4 12.0
26 4 15.0
27 5 99.3
32 7 11.0
36
2010 Aug 04
4
Passing the name of a variable to a function
Dear colleagues,
I have a problem which has bitten me occasionally. I often need to
prepare graphs for many variables in a data set, but seldom for all.
or for any large number of sequential or sequentially named variables.
Often I need several graphs for different subsets of the dataset
for a given variable. I run into similar problems with other needs
besides graphing.
What I would like to
2008 Dec 21
2
data format issue
Dear all-
I have a dataset (see a sample below - but the whole dataset is June
2005 - June 2008). The "LST" format is "YYMMDDHHmm" and I would like to
get the hourly average of the "mph" for the summer months (spanning all
years). I have been trying to use "aggregate" but am not having much
success at all! any thoughts would be greatly appreciated.
2011 Feb 27
2
substract 2 data.frames
Hi!
I have 2 data.frames: "fish" and "popn":
>fish
xloc yloc id birth size weight energy gonad
20 15 15 54 -60 107.9 63.0 15952.9 8.0
21 15 15 32 -60 105.1 61.4 15538.8 7.8
91 4 43 96 -60 118.9 69.4 17573.2 8.8
71 32 4 64 -60 121.6 71.0 17976.0 9.0
34 2 64 20 -60 116.2 67.9 17173.0 8.6
95 6 20 58 -60 106.5
2007 Sep 17
2
What's the corresponding function in R for lo() function in S-PLUS?
Dear friends,
In S-PLUS, we can use the following argument, but not in R.
mode12 <- gam(score1 ~ lo(latitude) + lo(longitude))
I searched the help in S-PLUS, it says lo() Allows the user to specify a
Loess fit in a GAM formula, but i didn't find the correponding function in
R.
Anybody knows how to do the similar task in R?
Thanks very much.
--
With Kind Regards,
oooO:::::::::
2010 Apr 16
2
managing data and removing lines
Hi,
I am very new to R and I've been trying to work through the R book to gain a
better idea of the code (which is also completely new to me).
Initially I imputed my data from a text file and that seemed to work ok, but
I'm trying to examine linear relationships between gdist and gair, gdist and
gsub, m6dist and m6air, etc.
This didn't work and I think it might have something to do
2013 Jan 03
5
splitting matrices
Dear useRs,
i want to split a matrix having 1116rows and 12 columns. i want to split that matrix into 36 small matrices each having 12 columns and 31 rows. The big matrix should be splitted row wise. which means that the first small matrix should copy values which are in first 31 rows and 12 columns of the big matrix. similarly 2nd small matrix should contain values from 32nd to 63rd row of the
2010 Apr 16
4
score counts in an aggregate function
Dear R-Users,
I have a big data set "mydata" with repeated observation and some missing
values. It looks like the format below:
userid sex item score1 score2
1 0 1 1 1
1 0 2 0 1
1 0 3 NA 1
1 0 4 1 0
2 1 1 0 1
2 1 2 NA 1
2 1 3 1
2010 Feb 25
2
Restructure some data
Suppose I have a data frame like "dat" below. For some context, this is the format that represents student's taking a computer adaptive test. first.item is the first item that student was administered and then score.1 is the student's response to that item and so forth.
item.pool <- paste("item", 1:10, sep = "")
set.seed(54321)
dat <- data.frame(id =
2013 Jul 17
2
error message in gev
Hi r-users,
I would like to use gev and my data (annual rainfall ) is as follows:
> head(dat,20) A B C D E F G H I J
1 45.1 41.5 58.5 50.1 46.0 49.1 37.7 49.1 59.8 54.0
2 50.3 39.8 49.4 56.4 49.4 48.8 42.1 49.8 49.4 58.3
3 41.7 39.3 44.6 39.1 35.7 41.5 40.8 40.8 38.5 45.6
4 50.7 33.9 48.4 28.2 35.5 39.1 61.4 17.0 30.7 38.3
5 39.3 30.6 46.9 23.8 25.8
2009 Sep 08
1
Derivative of nonparametric curve
Dear All,
I'm looking for?a way on computing the derivative of first and second order?of a smoothing curve produced by a nonprametric regression. For instance, if we run the R script below, a smooth nonparametric regression curve is produced.
provide.data(trawl)
Zone92?? <- (Year == 0 & Zone == 1)
Position <- cbind(Longitude - 143, Latitude)
dimnames(Position)[[2]][1] <-
2010 Jan 20
3
Mutliple sets of data in one dataset....Need a loop?
Hi
I'm hoping someone can help me I am a relative newbie to R.
I have data that is in a similar format to this...
Experiment Score1 Score2
X -0.85 -0.02
X -1.21 -0.02
X 1.05 0.09
Y -1.12 -0.07
Y -0.27 -0.07
Y -0.93 -0.08
Z 1.1 -0.03
Z 2.4 0.09
Z -1.0 0.09
Now I can easily have a look at the overall correlation of score 1 and 2 by
doing this
plot(data[,2], data[,3]) or
fit <-
2017 Dec 15
3
[cfe-dev] Who wants faster LLVM/Clang builds?
2017-12-09 12:54 GMT-08:00 Chris Lattner via llvm-dev <
llvm-dev at lists.llvm.org>:
>
>
> On Dec 8, 2017, at 5:01 PM, Mikhail Zolotukhin via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
> Hi,
>
> I tweaked my scripts to avoid removing includes when it doesn't give any
> significant benefits, which made the patches significantly smaller. This
>
2008 Aug 21
5
psychometric functions
Hi,
I want to fit some psychophysical data with cumulative gaussians. There is
quite a convenient toolbox for matlab called 'psignifit' (formerly known as
'psychofit'). It allows the lower bound of the sigmoid to vary slightly from
zero, aswell as the upper bound to vary from one. with these two free
parameters, the fitted function is less sensitive to noisy data and
outliers.