[R] jsonlite

[William Dunlap]

It would make helping you easier if you presented your data
in a format that others could copy and paste into R.  E.g.,

z <- list(data.frame(favoriteValue=c(23527,21837),
Classification=c("xxxx","xyxy")),
           data.frame(favoriteValue=c(25427,21237,21997),
Classification=c("xxxx","xyxy","xyxy")),
           data.frame(favoriteValue=c(99427), Classification=c("xxxx")))

You asked from something that "looks like" comma-separated strings of
numerals.

> zAll <- do.call(rbind, z)
> zAll$ID <- rep(seq_along(z), vapply(z, nrow, 0)) # which data.frame each
row came from
> zAll
  favoriteValue Classification ID
1         23527           xxxx  1
2         21837           xyxy  1
3         25427           xxxx  2
4         21237           xyxy  2
5         21997           xyxy  2
6         99427           xxxx  3
> library(dplyr)
> zAll %>% group_by(ID) %>% summarize(favoriteValue = paste(favoriteValue,
collapse=","))
# A tibble: 3 x 2
     ID favoriteValue
  <int> <chr>
1     1 23527,21837
2     2 25427,21237,21997
3     3 99427

It is usually better say how you intend the use the result of your data
manipulation, rather that how it looks when printed.  The comma-separated
strings are not handy for answering questions like "what are the most
common favoriteValues?" or "who has the most favoriteValues?" - the format
used in zAll is better for that.


Bill Dunlap
TIBCO Software
wdunlap tibco.com

On Tue, Nov 6, 2018 at 11:06 AM, JEFFERY REICHMAN <reichmanj using sbcglobal.net>
wrote:

> r-help Forum
>
> With a bit of r-help yesterday I was able to structure a JSON file such
> that I can read it within the R environment and export what I need except
> for one list object.
>
> So when I run ....
>
> location <- json.raw[["favorites"]]
> thead(location)
>
> # R returns something like ...
>
> [[1]]
>   favoriteValue          favoriteType          Classification
> 1          23527           https:// .....                xxxx
> 2          21837           https:// .....                xyxy
>
> [[2]]
>   favoriteValue          favoriteType          Classification
> 1          25427           https:// .....                xxxx
> 2          21237           https:// .....                xyxy
> 3          21997           https:// .....                xyxy
>
> [[3]]
>   favoriteValue          favoriteType          Classification
> 1          99427           https:// .....                xxxx
>
>
> What I want (need) is a data frame that looks like
>
>     favoriteValue
> 1  23527, 21837
> 2  25427, 21237, 21997
> 3  99427
>
> Jeff Reichman
>
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