[R] XML - get node by name

[Gabor Grothendieck]

On Sun, Sep 7, 2008 at 12:10 PM, Gabor Grothendieck
<ggrothendieck at gmail.com> wrote:
> In particular try this:
>
>> Lines <- '
> + <root>
> +  <data loc="1">
> +    <val i="t1"> 22 </val>
> +    <val i="t2"> 45 </val>
> +  </data>
> +  <data loc="2">
> +    <val i="t1"> 44 </val>
> +    <val i="t2"> 11 </val>
> +  </data>
> + </root>
> + '
>>
>> library(XML)
>> doc <- xmlTreeParse(Lines, asText = TRUE, trim = TRUE, useInternalNodes = TRUE)
>> root <- xmlRoot(doc)
>>
>> data1 <- getNodeSet(root, "//data")[[1]]
>> xmlValue(getNodeSet(data1, "//val")[[1]])
> [1] " 22 "


The last line should be the following (although in this case it
actually gives the same answer):

xmlValue(getNodeSet(data1, "val")[[1]])

>>
>
>
> On Sun, Sep 7, 2008 at 11:42 AM, Dirk Eddelbuettel <edd at debian.org> wrote:
>>
>> On 7 September 2008 at 10:22, Antje wrote:
>> | I try to rewrite some Java-code with R. It deals with reading XML files. I
>> [...]
>> | Now, I'd like to do something like this in R. Most important would be to
>> | retrieve a node just by its name, not by the whole path. How is it possible?
>> |
>> | Can anybody help me with this issue?
>>
>> Have you looked at the "XML" package for R ?
>>
>> Dirk
>>
>> --
>> Three out of two people have difficulties with fractions.
>>
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>>
>