Displaying 20 results from an estimated 3000 matches similar to: "problem with installing rms package"
2012 Aug 08
3
How can we compare two vectors?
x=c(5, 8, 28, 29, 30)
y=c(5, 8, 28, 29, 31)
How can we compare these two vectors, whether each element is exactly matched with the elements in the other vector ?
How can we get the non matched elements from both the vectors?
Can anyone help?
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2007 Aug 17
1
comparison of arrays of strings
Hi
i have two arrays of genes names,one with180000 gene names and the other with 24000 gene names,I have to compare both of them for finding common names.
I have both the arrays in .csv format.i loaded the files and tried to compare them using for and if loops
but I got the error Error in Ops.factor(cgh[i, 1], cgh[j, 2]) :
level sets of factors are different
Please suggest me how to
2011 Aug 06
1
help with predict for cr model using rms package
Dear list,
I'm currently trying to use the rms package to get predicted ordinal
responses from a conditional ratio model. As you will see below, my
model seems to fit well to the data, however, I'm having trouble
getting predicted mean (or fitted) ordinal response values using the
predict function. I have a feeling I'm missing something simple,
however I haven't been able to
2007 Aug 18
1
doubt about string comparison
I have two large arrays of strings array1 with 180000 names and array2 with 24000 names ,I want to find the common names in both of them.
My arrays are for example
Array1 Array2
GAP4
HIST1B-histamine....
MFG12 SNRPD-signal induced...
CFH1A
2011 May 17
2
can not use plot.Predict {rms} reproduce figure 7.8 from Regression Modeling Strategies (http://biostat.mc.vanderbilt.edu/wiki/pub/Main/RmS/course2.pdf)
Dear R-users,
I am using R 2.13.0 and rms 3.3-0 , but can not reproduce figure 7.8 of the
handouts *Regression Modeling Strategies* (
http://biostat.mc.vanderbilt.edu/wiki/pub/Main/RmS/course2.pdf) by the
following code. Could any one help me figure out how to solve this?
setwd('C:/Rharrell')
require(rms)
load('data/counties.sav')
older <- counties$age6574 + counties$age75
2012 Jun 20
2
Odds Ratios in rms package
Hi,
I'm using the rms package to do regression analysis using the lrm
function. Retrieving odds ratios is possible using summary.rms. However,
I could not find any information on how exactly the odds ratios for
continuous variables are calculated. It doesn't appear to be the odds
ratio at 1 unit increase, because the output of summary.rms did not
match the coefficient's value.
E.g.
2011 Mar 09
2
rms: getting adjusted R^2 from ols object
How can I extract the adjusted R^2 value from an ols object (using rms package)?
library(rms)
x <- rnorm(10)
y <- x + rnorm(10)
ols1 <- ols(y ~ x)
Typing "ols1" displays adjusted R^2 among other things, but how can I
assign it to a variable? I tried str(ols1) but couldn't see where to
go from there.
Thanks,
Mark Seeto
2011 Oct 11
1
plot methods for summary of rms objects
The integration of plot methods for various outputs from rms packages is
a great appreciated aspect of the rms package.
I particularly like to use:
plot(summary(model))
for my own purposes, but... for publication/presentation I need to
modify details like variable names, or the number of signficant digits
used in the figure annotations.
Is there a simple way to modify the plot inputs
2011 Aug 25
1
survplot() for cph(): Design vs rms
Hi, in Design package, a plot of survival probability vs. a covariate can be generated by survplot() on a cph object using the folliowing code:
n <- 1000
set.seed(731)
age <- 50 + 12*rnorm(n)
label(age) <- "Age"
sex <- factor(sample(c('male','female'), n, TRUE))
cens <- 15*runif(n)
h <- .02*exp(.04*(age-50)+.8*(sex=='Female'))
dt <-
2012 Apr 19
2
Gls function in rms package
Dear R-help,
I don't understand why Gls gives me an error when trying to fit a
model with AR(2) errors, while gls (from nlme) does not. For example:
library(nlme)
library(rms)
set.seed(1)
d <- data.frame(x = rnorm(50), y = rnorm(50))
gls(y ~ x, data=d, correlation = corARMA(p=2)) #This works
Gls(y ~ x, data=d, correlation = corARMA(p=2)) # Gives error
# Error in
2012 Sep 05
1
showing ticks for censored data in survfit() in the rms package
The answer to this may be obvious, but I was wondering in the rms
package and the survfit(), how you can plot the censored time points
as ticks.
Take for example,
library(survival)
library(rms)
foo <- data.frame(Time=c(1,2,3,4,5,6,10), Status=c(1,1,0,0,1,1,1))
answer <- survfit(Surv(foo$Time, foo$Status==1) ~1)
# this shows the censored time points as ticks at Time = 3 and 4
plot(answer)
2009 Dec 07
1
multiple plots using summary in rms package
Dear All,
I wonder if someone can point me in the right direction here. I'm working
with the rms library, R 2.9.2 under Windows XP.
I'm trying to arrange two plots side by side for a colleague. mfrow or
mfcol do not seem to work, however, so I am obviously missing something
important. I know that there have been changes in the graphics from Design
to rms, but am just not sure where to
2010 Jun 07
1
ols function in rms package
Hello,
I have a couple of questions about the ols function in Frank Harrell's rms
package.
Is there any way to specify variables by their column number in the data
frame rather than by the variable name?
For example,
library(rms)
x1 <- rnorm(100, 0, 1)
x2 <- rnorm(100, 0, 1)
x3 <- rnorm(100, 0, 1)
y <- x2 + x3 + rnorm(100, 0, 5)
d <- data.frame(x1, x2, x3, y)
rm(x1, x2, x3,
2012 May 25
1
Multiple rms summary plots in a single device
I would like to incorporate multiple summary plots from the rms
package into a single device and to control the titles, and also to
open a new device when I reach a specified number of plots. Currently
I am only getting a single "plot(summary(" graph in the upper left-
hand corner of each successive device. However, in the rms
documention I see instances of a loop being used with
2011 Nov 30
1
Nomogram with stratified cph in rms package, how to get failure probability
Hello,
I am using Dr. Harrell's rms package to make a nomogram. I was able to make
a beautiful one. However, I want to change 5-year survival probability to
5-year failure probability.
I couldn?t get hazard rate from Hazard(f1) because I used cph for the model.
Here is my code:
library(rms)
f1 <- cph(Surv(retime,dfs) ~
age+her2+t_stage+n_stage+er+grade+cytcyt+Cyt_PCDK2 , data=data11,
2012 Mar 22
2
Summary values from Glm function (rms package)
Dear fellow R-users,
I?m using the Glm function (gamma family of distributions) from the rms
package to compare 2 groups on costs data. Although the summary function
does provide the mean cost difference and standard errors, I believe these
values were in the (natural) log ratio format. Is there a function to
express these values into the original scale of the response variable (i.e.,
dollars)
2011 Sep 01
1
How to retrieve bias-corrected probability from calibrate.rms
Dear R users:
In Prof. Harrell's library rms, calibrate.rms plot the Bias-corrected
Probability and Apparent Probability.
The latter one can be retrieved from class calibrate.default. But how to
retrieve the former one.
BW
*Yao Zhu*
*Department of Urology
Fudan University Shanghai Cancer Center
Shanghai, China*
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2011 May 08
1
Syntax for iter.max in rms
Hello,
I would like to increase the number of iterations for running a
Buckley-James regression model in the rms package, but something is
apparently syntactically wrong. The following code initially is
exactly as it appears in the help page (which runs successfully), then
a "failure to converge" message (resulting from specifying an
'identity' link argument, the error message
2011 Aug 07
2
help annotating plot.xmean.ordinaly in rms package
Hello List:
Does anyone know if there's a way to annotate the plots produced by the
plot.xmean.ordinaly function in the rms package. I'd like to produce
publication quality figures, but first need to annotate the axis labels. Is
there a way to do that?
I appreciate any advice.
Chris
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2012 Apr 30
1
question on jitter in plot.Predict in rms
Dear colleagues,
I have a question regarding controlling the jitter when plotting
predictions in the rms package. Below I've simulated some data that
reflect what I'm working with. The model predicts a continuous variable
with an ordinal score, a two-level group, and a continuous covariate. Of
primary interest is a plot of the group by score interaction, where the
score is the ordinal