[jira] [Updated] (ARROW-14365) [R] Update README example to reflect new capabilities

["Jonathan Keane (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-14365?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Keane updated ARROW-14365:
-----------------------------------
    Description: Now that we can use aggregate functions as well as joins we should update the examples in readme.md to include those functionalities.  (was: The [R package README|https://github.com/apache/arrow/blob/master/r/README.md] is out of date and needs to be updated in the following ways:

1- Update the list of file reading/writing functions to add {{write_csv_arrow()}} which was added in ARROW-11787.

2- Assess whether the installation instructions should be changed to reflect ARROW-12981.

3- Update the description of dplyr limitations. Currently it says: 
{quote}The {{arrow}} package works with most single-table {{dplyr}} verbs except those that compute aggregates, such as {{summarise()}} and {{mutate()}} after {{group_by()}}
{quote}
Two-table verbs now work (since ARROW-13995), and {{summarise()}} after {{group_by()}} now works (since ARROW-13618). However, window functions do not work. This text should be updated accordingly.

Also consider updating the dplyr example to use {{summarise()}} after {{group_by()}}.)

> [R] Update README example to reflect new capabilities
> -----------------------------------------------------
>
>                 Key: ARROW-14365
>                 URL: https://issues.apache.org/jira/browse/ARROW-14365
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: R
>            Reporter: Ian Cook
>            Assignee: Jonathan Keane
>            Priority: Critical
>             Fix For: 6.0.0
>
>
> Now that we can use aggregate functions as well as joins we should update the examples in readme.md to include those functionalities.



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