Displaying 20 results from an estimated 4000 matches similar to: "I need the dataset--thank you"
2010 Jul 31
3
I have a problem
dear£º
in the example£¨nomogram£©£¬I don't understand the meanings of the program which have been marked by red line.And how to compile the program(L <- .4*(sex=='male') + .045*(age-50) +
(log(cholesterol - 10)-5.2)*(-2*(sex=='female') + 2*(sex=='male'))).
n <- 1000 # define sample size
set.seed(17) # so can reproduce the results
age <- rnorm(n, 50, 10)
2010 Oct 06
2
A problem --thank you
dear:teacher
i have a problem which about the polr()(package "MASS"), if the response must have 3 or more levels?
and how to fit the polr() to 2 levels?
thank you.
turly yours
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2010 Oct 04
2
i have aproblem --thank you
dear professor:
thank you for your help,witn your help i develop the nomogram successfully.
after that i want to do the internal validation to the model.i ues the bootpred to do it,and then i encounter problem again,just like that.(´íÎóÓÚerror to :complete.cases(x, y, wt) : ²»ÊÇËùÓеIJÎÊý¶¼Ò»Ñù³¤(the length of the augment was different))
i hope you tell me where is the mistake,and maybe i have
2010 Oct 04
1
I have aproblem about nomogram--thank you for your help
dear professor:
I have a problem about the nomogram.I have got the result through analysing the dataset "exp2.sav" through multinominal logistic regression by SPSS 17.0.
and I want to deveop the nomogram through R-Projject,just like this :
> n<-100
> set.seed(10)
> T.Grade<-factor(0:3,labels=c("G0", "G1", "G2","G3"))
>
2018 Jan 03
1
summary.rms help
Dear All,
using the example from the help of summary.rms
library(rms)
n <- 1000 # define sample size
set.seed(17) # so can reproduce the results
age <- rnorm(n, 50, 10)
blood.pressure <- rnorm(n, 120, 15)
cholesterol <- rnorm(n, 200, 25)
sex <- factor(sample(c('female','male'), n,TRUE))
label(age) <- 'Age'
2013 Jun 24
2
Nomogram (rms) for model with shrunk coefficients
Dear R-users,
I have used the nomogram function from the rms package for a logistic
regresison model made with lrm(). Everything works perfectly (r version
2.15.1 on a mac). My question is this: if my final model is not the one
created by lrm, but I internally validated the model and 'shrunk' the
regression coefficients and computed a new intercept, how can I build a
nomogram using that
2010 Aug 14
1
How to add lines to lattice plot produced by rms::bplot
I have a plot produced by function bplot (package = rms) that is
really a lattice plot (class="trellis"). It is similar to this plot
produced by a very minor modification of the first example on the
bplot help page:
requiere(rms)
n <- 1000 # define sample size
set.seed(17) # so can reproduce the results
age <- rnorm(n, 50, 10)
blood.pressure <- rnorm(n, 120,
2011 Apr 12
1
Datadist error
Dear all,
I have performed a simple logistic regression using the lrm function from
the Design library. Now I want to plot the summary, or make a nomogram. I
keep getting a datadist error: options(datadist= m.full ) not created with
datadist.
I have tried to specify datadist beforhand (although I don't know why it
should be done):
ddist<-datadist(d) ##where d is my dataset
2008 May 29
2
Troubles plotting lrm output in Design Library
Dear R-helpers,
I'm having a problem in using plot.design in Design Library. Tho
following example code produce the error:
> n <- 1000 # define sample size
> set.seed(17) # so can reproduce the results
> age <- rnorm(n, 50, 10)
> blood.pressure <- rnorm(n, 120, 15)
> cholesterol <- rnorm(n, 200, 25)
> sex <-
2003 Nov 04
2
help with nomogram function
I have fitted a logistic regression model
> failed.lr2$call
lrm(formula = failed ~ Age + task2 + Age:task2, data = time.long,
na.action = na.omit)
using the Design package functions and would like to generate a
nomogram from this model.
the datadist information is generated and stored in
> ddist
time.long$Age time.long$task2
Low:effect 45
2002 Sep 13
1
design package (plot problems)
Hi,
just making some experiments with
design library i get an error if
i want plot(fit) - show below from
onlineHelp !?
..perhaps is here another mask problem?, but
label from xtable which was my first problem
is now off !
Thanks for advance & regards,
Christian
$ n <- 1000 # define sample size
$ set.seed(17) # so can reproduce the results
$ age <- rnorm(n, 50, 10)
2017 Sep 14
3
Help understanding why glm and lrm.fit runs with my data, but lrm does not
Dear all,
I am using the publically available GustoW dataset. The exact version I am using is available here: https://drive.google.com/open?id=0B4oZ2TQA0PAoUm85UzBFNjZ0Ulk
I would like to produce a nomogram for 5 covariates - AGE, HYP, KILLIP, HRT and ANT. I have successfully fitted a logistic regression model using the "glm" function as shown below.
library(rms)
gusto <-
2005 Aug 22
1
How to add legend of plot.Design function (method=image)? (if (!.R.) )
Hi,
When running
z <- plot(fit, age=NA, cholesterol=NA, perim=boundaries, method='image')
Legend(z, fun=plogis, at=qlogis(c(.01,.05,.1,.2,.3,.4,.5)),
zlab='Probability')
And after pointing the cursor to the plot() screen in R, I obtain the
following message:
Using function "locator(2)" to place opposite corners of image.legend
Error in
2017 Sep 14
0
Help understanding why glm and lrm.fit runs with my data, but lrm does not
> On Sep 14, 2017, at 12:30 AM, Bonnett, Laura <L.J.Bonnett at liverpool.ac.uk> wrote:
>
> Dear all,
>
> I am using the publically available GustoW dataset. The exact version I am using is available here: https://drive.google.com/open?id=0B4oZ2TQA0PAoUm85UzBFNjZ0Ulk
>
> I would like to produce a nomogram for 5 covariates - AGE, HYP, KILLIP, HRT and ANT. I have
2017 Sep 14
1
Help understanding why glm and lrm.fit runs with my data, but lrm does not
Fixed 'maxiter' in the help file. Thanks.
Please give the original source of that dataset.
That dataset is a tiny sample of GUSTO-I and not large enough to fit this
model very reliably.
A nomogram using the full dataset (not publicly available to my knowledge)
is already available in http://biostat.mc.vanderbilt.edu/tmp/bbr.pdf
Use lrm, not lrm.fit for this. Adding maxit=20 will
2011 May 05
7
Draw a nomogram after glm
Hi all R users
I did a logistic regression with my binary variable Y (0/1) and 2
explanatory variables.
Now I try to draw my nomogram with predictive value. I visited the help of R
but I have problem to understand well the example. When I use glm fonction,
I have a problem, thus I use lrm. My code is:
modele<-lrm(Y~L+P,data=donnee)
fun<- function(x) plogis(x-modele$coef[1]+modele$coef[2])
2010 Oct 03
2
A problem about nomogram--thank you for you help
dear professor:
I am a doctor of urinary,and I am developing a nomogram of bladder tumor.Now I have a problem about this.
I have got the result like this through analysing the dataset "exp11.sav" through multinominal logistic regression by SPSS 17.0.(the Sig. is high,that is good ,it is just aexperimental data )
Parameter Estimates
Ya
B
Std. Error
Wald
df
Sig.
Exp(B)
95%
2010 Oct 04
0
have aproblem --thank you
dear professor:
thank you for your help,witn your help i develop the nomogram successfully.
after that i want to do the internal validation to the model.i ues the bootpred to do it,and then i encounter problem again,just like that.(???error to :complete.cases(x, y, wt) : ???????????(the length of the augment was different))
i hope you tell me where is the mistake,and maybe i have chosen the
2009 Apr 25
3
Nomogram with stratified cph in Design package
Hello,
I am using Dr. Harrell's design package to make a nomogram. I was able to
make a beautiful one without stratifying, however, I will need to stratify
to meet PH assumptions. This is where I go wrong, but I'm not sure where.
Non-Stratified Nomogram:
2008 Apr 17
1
Error in Design package: dataset not found for options(datadist)
Hi,
Design isn't strictly an R base package, but maybe someone can explain
the following.
When lrm is called within a function, it can't find the dataset dd:
> library(Design)
> age <- rnorm(30, 50, 10)
> cholesterol <- rnorm(30, 200, 25)
> ch <- cut2(cholesterol, g=5, levels.mean=TRUE)
> fit <- function(ch, age)
+ {
+ d <- data.frame(ch, age)
+