R-beta: R 0.50 alpha

Ennapadam Venkatraman (VENKAT@biosta.mskcc.org)
25 Jul 97 12:02:00 EST


Message-Id: <199707251602.SAA13750@hypatia.math.ethz.ch>
Date: 25 Jul 97 12:02:00 EST
From: "Ennapadam Venkatraman" <VENKAT@biosta.mskcc.org>
Subject: R-beta: R 0.50 alpha
To: "r-help" <r-help@stat.math.ethz.ch>

The new code seems to have broken various things.

Autoloading of libraries doesn't seem to work: 

   > library(survival4)
   Autoloading required library: splines
   Error in pos.to.env(pos) : invalid "pos" argument
   > search()
   [1] ".GlobalEnv"        "library:survival4" "library:date"
   [4] "library:base"

The coxph function the the library survival4 doesn't seem to work. It just
crashes R. See the example below:

--------------------------------------------------------------------------
R : Copyright 1997, Robert Gentleman and Ross Ihaka
Version 0.50 Alpha-1 (July 22, 1997)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type "license()" for details.

[Previously saved workspace restored]

> runif(1)
[1] 0.05205324
> .Random.seed
[1]  4721  5660 21509
> library(splines)
> library(survival4)
> xx <- NULL
> xx$ftim <- exp(-runif(100))
> xx$ctim <- 2*runif(100)
> xx$sts <- 1*(xx$ftim <= xx$ctim)
> xx$otim <- xx$sts*xx$ftim + (1-xx$sts)*xx$ctim
> xx$z1 <- runif(100)
> xx$z2 <- runif(100)
> survfit( Surv(otim,sts) ~ 1,xx)
Call: survfit(formula = Surv(otim, sts) ~ 1, data = xx)

       n   events     mean se(mean)   median   0.95CI   0.95CI
100.0000  65.0000   0.6854   0.0223   0.7294   0.6418   0.7864
> coxph( Surv(otim,sts) ~ z1 + z2, data=xx)
--------------------------------------------------------------------------

It crashed the moment I hit return.


E. S. Venkatraman

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