Re: [R] Recursive indexing failed at level 2

From: <Bill.Venables_at_csiro.au>
Date: Sun, 27 Jun 2010 10:29:02 +1000

Why do you use *double* square brackets on the left side of the replacement?

>From the help info for "[[":

"The most important distinction between [, [[ and $ is that the [ can select more than one element whereas the other two select a single element."

You seem to be selecting 20 elements.

-----Original Message-----
From: r-help-bounces_at_r-project.org [mailto:r-help-bounces_at_r-project.org] On Behalf Of Jim Hargreaves Sent: Saturday, 26 June 2010 9:54 PM
To: r-help_at_r-project.org
Subject: [R] Recursive indexing failed at level 2

Dear fellow R users,

I am replacing elements of a list like so:

pulse_subset[[1:20]]=unlist(pulse[i])[1:20]

where pulse is a list of lists, and pulse [i] has >20 values.

This gives the error "Recursive Indexing failed at level 2". But, interestingly this instruction is part of a loop which has gone through about 200,000 iterations before giving this error.

Actual code:
 >
pulse_subset[[1:(length(unlist(pulse[i])[as.numeric(peak_start[i]):as.numeric(peak_end[i])]))]] <- unlist(pulse[i])[as.numeric(peak_start[i]):as.numeric(peak_end[i])]

Error in
pulse_subset[[1:(length(unlist(pulse[i])[as.numeric(peak_start[i]):as.numeric(peak_end[i])]))]] <- unlist(pulse[i])[as.numeric(peak_start[i]):as.numeric(peak_end[i])] :

   recursive indexing failed at level 2

If anyone could shed some light I'd be rather grateful.

Regards,
Jim Hargreaves



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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Sun 27 Jun 2010 - 00:34:33 GMT

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