From: Petr Pikal <petr.pikal_at_precheza.cz>

Date: Tue 21 Jun 2005 - 22:34:38 EST

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Tue Jun 21 22:44:13 2005

Date: Tue 21 Jun 2005 - 22:34:38 EST

Hi

from help page

Details:

A data frame is a list of variables of the same length with unique ^^^^^^^^^^ row names, given class '"data.frame"'.

So you need to use a different sructure (e.g.list) or you have to ensure that you rbind vectors of same length.

**HTH
**

Petr

On 21 Jun 2005 at 12:09, Joćo Mendes Moreira wrote:

> Hello,

*>
**> I want to create a data.frame with different number of columns per
**> line. What I want is something like:
**>
**> example <- NULL
**> begin <- 1
**> while (end < nrow(orig.data))
**> {
**> end <- next.day(orig.data,begin) # my own function. It returns the
**> first index from the next day. Each day has a different number of
**> records. example <- rbind(example, c(begin, end,
**> predictions[c(begin:end)], ...)) begin <- end+1 }
**>
**> It gives the following warning:
**>
**> > number of columns of result
**> not a multiple of vector length (arg 2) in: rbind(example,
**> c(begin, end, predictions[c(begin:end)], ...
**>
**> I believe this happen once the number of elements by line are
**> different. The example data.frame repeats the same values for shorter
**> lines until the line is full, i.e., it tries to create lines with the
**> same number of columns.
**>
**> The question is: How can I create a data.frame with different number
**> of columns?
**>
**> Any help is very much appreciated
**>
**> Thanks in advance
**>
**> Joao Moreira
**> [[alternative HTML version deleted]]
**>
**> ______________________________________________
**> R-help@stat.math.ethz.ch mailing list
**> https://stat.ethz.ch/mailman/listinfo/r-help
**> PLEASE do read the posting guide!
**> http://www.R-project.org/posting-guide.html
*

Petr Pikal

petr.pikal@precheza.cz

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Tue Jun 21 22:44:13 2005

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