Displaying 9 results from an estimated 9 matches similar to: "ReL plot(cox.zph())"
2007 Sep 27
1
plot(cox.zph())
Hello,
I got error message when applying the plot function to the cox.zph
object to create the Schoenfeld residual plots.
> plot(zph.revasFit[1])
Error in plot.window(xlim, ylim, log, asp, ...) :
need finite 'ylim' values
In addition: Warning messages:
1: NaNs produced in: sqrt(x$var[i, i] * seval)
2: no non-missing arguments to min; returning Inf in: min(x)
3: no
2006 Dec 21
1
zph patch website broken ?
Hi,
I used to patch my squid with ZPH patch on
http://www.it-academy.bg/zph/
> The idea behind this patch is to allow classification
> of packets generated from the squid cache engine towards
> clients.
> The classification is based on whether the content is
> being served from cache (a cache HIT), or
> is being retrieved from a remote server (a cache MISS).
Very useful
2004 Jun 28
0
fairnat with squid + Squid with ZPH
Hi,
I''m trying to share internet on a LAN
I''ve a linux router with SQUID (with ZPH support) + FAIRNAT
The idea is:
- fairness sharing internet
- priorize interactive traffic
- if a web object is on squid-cache (HIT), user
can download it, with a rate = LAN rate
I''ve:
- Last Fairnat Script: www.metamorpher.de/fairnat/
- SQUID 2.5STABLE5 with ZPH patch
2005 Jan 26
0
Changing axis labels in plots of zph objects (survival analysis)
Hi,
I am using the Survival package, more precisely the cox.zph function, to plot log(Hazard rate) over time.
if I type
plot(temp.zph[2])
then I get the plot I want. However, I want to change the label of the y axis that cox.zph prints.
plot(temp.zph[2],xlab='Days', ylab='log hazard for Fast recovery cluster')
then I get
Error in plot.default(range(xx), yr, type =
2006 Jan 25
1
cox.zph
Dear R-users,
I am sorry if this is obvious. I am testing the proportional hazard
assumptions using cox.zph. If i am not wrong, a g(t) function must be
assumed. Four possibilities available in R are "km","identity" and "rank".
may i know what functions of time are these transformation assuming?
Thanks a lot in advance for your wisdom.
kind regards,
sing yee ling
2006 Nov 14
0
R-Help : Warning messages using plot(cox.zph)
Hi,
I get a warning message when I plot cox.zph objects with the transform km and
rank, but not with id and log with the same data set.
Here's the command:
example is a coxph object
rk <- cox.zph(example, transform='rank')
rk
plot(rk)
and here's the warning message:
Warning messages:
1: suppression des ex-aequos de 'x' in: approx(xx, xtime, seq(min(xx),
max(xx),
2004 Apr 14
2
zph / squid syntaxis ?
Hi,
I''ve used old ZPH patch under squid 2.4 Stable4
and it works great !
Now I want to patch squid 2.4 stable 5,
with new patch, on http://www.it-academy.bg/zph/
I''ve patched and installed squid 2.5 stable 5
succefully, but I can''t get ZPH works.
I''m trying with
...
$TC class add dev $LANDEV parent 1: classid 1:7 htb rate 1Mbit
$TC filter add dev $LANDEV
2007 Jan 25
0
cox.zph vs log-log survival plot
Hello,
Excuse me for a more methodological than technical question. I'm developing a Cox model with 10 covariates. One of them is age (named "eta"). I've checked proportionality with cox.zph with age continuous:
> cox.zph(coxph(Surv(TTP,CENSOTTP)~eta))
rho chisq p
eta -0.0154 0.0225 0.88
and categorical (eta<60):
>
2006 Apr 07
2
Why is transform="km" the default for cox.zph?
To enhance my understanding, and that of my students, I have a question
about cox.zph in the survival package.
If I have correctly gleaned the high-level point from the 1994
Biometrika paper of Grambsch and Therneau, it looks to me like
cox.zph provides a mechanism to test for a simple trend in plots
of a function of time, g(t) versus the scaled schoenfeld
residuals and it also provides some