R Import XML as a Dataframe with different tag formats

Apologies for a question which may have a simple solution, I am not very experienced at using R and this is the first time I have dealt with XML data imports.

I have been searching for a solution to the problem but had no luck – I am looking to convert an XML to a dataframe. A lot of the solutions I have come across give examples of the XML element tags which are in the same format as VAR2 below.

The code I have at the moment is below which uses the XML package and xmlToDataFrame function. This returns a value for VAR2 but empty column for VAR3. How can I import an XML as a dataframe which uses a format similar to VAR3?

Any help would be greatly appreciated. Whilst I am using the XML package at the moment I am open to other packages to get to a solution.


doc <- “
		<VAR1 Val="ID0001"/>
			<VAR3 Val="500"/>

doc_parse <- xmlParse(doc)
doc_frame <- xmlToDataFrame(doc_parse, nodes = getNodeSet(doc_parse, "//SUBGROUP"))

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