error with source(): invalid 'times' value

Put a space after the # in the line
#line 516
to avoid the problem.  A similar problem also
appears in parse().

   >  parse(text="#line 102\nlog(pi)\n")

   Error in `Encoding<-`(`*tmp*`, value = character(0)) :
     'value' must be of positive length

   >  parse(text="# line 102\nlog(pi)\n")

   expression(log(pi))
   attr(,"srcfile")
   <text>
   attr(,"wholeSrcref")
   # line 102
   log(pi)

(I'm still using 2.12.0.)

Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com

-----Original Message-----
From: r-help-bounces at r-project.org
[mailto:r-help-bounces at r-project.org] On Behalf Of jim holtman
Sent: Monday, January 24, 2011 10:19 AM
To: Matthieu Stigler
Cc: r-help at r-project.org
Subject: Re: [R] error with source(): invalid 'times' value

Do 'str(dep)' to see what dep is and where it comes from.  If you have
the 'options' set as I suggested, you can do this examination when the
error occurs.

On Mon, Jan 24, 2011 at 12:41 PM, Matthieu Stigler
<matthieu.stigler at gmail.com>  wrote:

ok, thanks Jim

The problem comes from length(dep)<leading, so we get

negative number...

length(dep)

[1] 183

c(leading, length(dep) - leading)
[1]  516 -333

But 183 seems to be the right number:
$ wc -l /tmp/RFile.r
183 /tmp/RFile.r

So now need to understand what is this "dep", and why it

has a bigger

length... tried to check source code (:-)) but could not

get it... any idea?

Thanks a lot

Matthieu


Le 24. 01. 11 18:29, jim holtman a ?crit :

It sounds like you have some invalid expressions.  Dump

out the values

of 'leading' and 'length(dep) - leading'.  Learn some

simple debugging

techniques.  One is to set

options(error=utils::recover)

so that on the error you can use the browser to examine

what the values

are.

On Mon, Jan 24, 2011 at 12:07 PM, Matthieu Stigler
<matthieu.stigler at gmail.com>    wrote:

hi

I am seeing a strange behavior I can't understand... doing:

source("/tmp/RFile.r",echo=TRUE)

Error in rep.int(c(prompt.echo, continue.echo),

c(leading, length(dep) -

  :
  invalid 'times' value

traceback()

3: rep.int(c(prompt.echo, continue.echo), c(leading, length(dep) -
       leading))
2: paste(rep.int(c(prompt.echo, continue.echo),

c(leading, length(dep) -

       leading)), dep, sep = "", collapse = "\n")
1: source("/tmp/RFile.r", echo = TRUE)
But the file I am trying to source is very simple... see:
$ more /tmp/RFile.r
###################################################
### chunk number 1:
###################################################
#line 516 "VolStocksDec2010.Rnw"
path<-"~/Dropbox/FAO/Papers/Volatility only"
pathMarkov<-"~/Dropbox/FAO/Markov Model/"
library(zoo)

Any idea where it can come from? It works fine when

echo=FALSE... I am

using
R 2.12, on Ubuntu Linux 10.4 (R from CRAN), full session

info below.

Should
I rather send this to r-devel?

Thanks a  lot

Matthieu


sessionInfo()
R version 2.12.1 (2010-12-16)
Platform: i486-pc-linux-gnu (32-bit)

locale:
  [1] LC_CTYPE=fr_CH.utf8       LC_NUMERIC=C
  [3] LC_TIME=fr_CH.utf8        LC_COLLATE=fr_CH.utf8
  [5] LC_MONETARY=C             LC_MESSAGES=en_US.UTF-8
  [7] LC_PAPER=fr_CH.utf8       LC_NAME=C
  [9] LC_ADDRESS=C              LC_TELEPHONE=C
[11] LC_MEASUREMENT=fr_CH.utf8 LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices datasets  utils

methods   base

loaded via a namespace (and not attached):
[1] grid_2.12.1         lattice_0.19-17     Matrix_0.999375-45
[4] nnet_7.3-1          tsDyn_0.7-40        tseries_0.10-23
[7] tseriesChaos_0.1-11

-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?