Because 'all' is the name of one of the arguments to cbind.zoo:
R> args(cbind.zoo)
function (..., all = TRUE, fill = NA, suffixes = NULL, drop = FALSE)
NULL
do.call constructs a call somewhat like:
R> cbind(test=zz$test, all=zz$all, foo=zz$foo)
The same thing would happen for list elements named 'fill',
'suffixes', or 'drop'.
Best,
--
Joshua Ulrich | about.me/joshuaulrich
FOSS Trading | www.fosstrading.com
R/Finance 2013: Applied Finance with R | www.RinFinance.com
On Mon, Apr 8, 2013 at 2:54 PM, Harry Mamaysky <h.mamay...@gmail.com> wrote:
> Can someone explain why this happens when one of the list elements is named
> 'all'?
>
>> zz <- list( zoo(1:10,1:10), zoo(101:110,1:10), zoo(201:210,1:10) )
>> names(zz)<-c('test','bar','foo')
>> do.call(cbind,zz)
> test bar foo
> 1 1 101 201
> 2 2 102 202
> 3 3 103 203
> 4 4 104 204
> 5 5 105 205
> 6 6 106 206
> 7 7 107 207
> 8 8 108 208
> 9 9 109 209
> 10 10 110 210
>> names(zz)<-c('test','all','foo')
>> do.call(cbind,zz)
> test foo
> 1 1 201
> 2 2 202
> 3 3 203
> 4 4 204
> 5 5 205
> 6 6 206
> 7 7 207
> 8 8 208
> 9 9 209
> 10 10 210
>>
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>
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