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RDataTypeRegisteredQ[type]

returns True if a data type with a given name has been registered in a current RLink session, and False otherwise.

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Details and Options Details and Options
Examples  
Basic Examples  
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RLink`
RLink`

RDataTypeRegisteredQ

RDataTypeRegisteredQ[type]

returns True if a data type with a given name has been registered in a current RLink session, and False otherwise.

Details and Options

  • type should normally be a string.

Examples

Basic Examples  (1)

Wolfram Language code: Needs["RLink`"] InstallR[]

Test if the data frame type has been registered:

Wolfram Language code: RDataTypeRegisteredQ["data.frame"]

Now unregister it and test again:

Wolfram Language code: RDataTypeUnregister["data.frame"]; RDataTypeRegisteredQ["data.frame"]

Reload type definitions to restore the data frame type registration:

Wolfram Language code: RDataTypeDefinitionsReload[] RDataTypeRegisteredQ["data.frame"]
Wolfram Research (2012), RDataTypeRegisteredQ, Wolfram Language function, https://reference.wolfram.com/language/RLink/ref/RDataTypeRegisteredQ.html.

Text

Wolfram Research (2012), RDataTypeRegisteredQ, Wolfram Language function, https://reference.wolfram.com/language/RLink/ref/RDataTypeRegisteredQ.html.

CMS

Wolfram Language. 2012. "RDataTypeRegisteredQ." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/RLink/ref/RDataTypeRegisteredQ.html.

APA

Wolfram Language. (2012). RDataTypeRegisteredQ. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/RLink/ref/RDataTypeRegisteredQ.html

BibTeX

@misc{reference.wolfram_2026_rdatatyperegisteredq, author="Wolfram Research", title="{RDataTypeRegisteredQ}", year="2012", howpublished="\url{https://reference.wolfram.com/language/RLink/ref/RDataTypeRegisteredQ.html}", note=[Accessed: 13-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_rdatatyperegisteredq, organization={Wolfram Research}, title={RDataTypeRegisteredQ}, year={2012}, url={https://reference.wolfram.com/language/RLink/ref/RDataTypeRegisteredQ.html}, note=[Accessed: 13-June-2026]}