[R] help with json data from the web into data frame in R

Eric Berger
Tue, 08 May 2018 15:31:07 -0000

Hi Rich,
Take a look at the function fromJSON found in the rjson package.
Note that the Usage in the help page: ?fromJSON
names the second argument 'file' but if you look at the description the
argument can be a URL.

HTH,
Eric


On Tue, May 8, 2018 at 6:16 PM, Evans, Richard K. (GRC-H000) <
richard.k.evans at nasa.gov> wrote:

> Hello
>
> I am able to construct a url that points to some data online in the JSON
> format.  See an example at [0].
>
> I would like to work with this data as a dataframe in R.
>
> I know that there is a package for handling json data [1] but it assumes
> the data is in a local file but It is not clear to me how to request the
> data from the web in an R script and get the json data converted into a
> data frame in R.
>
> Can anyone provide a basic example or some guidance please?
>
> -Rich (revansx)
>
> [0] https://www.semantic-mediawiki.org/w/api.php?
> action=ask&query=[[Category:City]]&format=json
> [1] https://www.tutorialspoint.com/r/r_json_files.htm
>
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