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Wes McKinney resolved ARROW-8779. --------------------------------- Resolution: Fixed Issue resolved by pull request 7435 [https://github.com/apache/arrow/pull/7435] > [R] Implement conversion to List<Struct> > ---------------------------------------- > > Key: ARROW-8779 > URL: https://issues.apache.org/jira/browse/ARROW-8779 > Project: Apache Arrow > Issue Type: Improvement > Components: R > Affects Versions: 0.16.0, 0.17.0 > Reporter: Dominic Dennenmoser > Assignee: Romain Francois > Priority: Major > Labels: pull-request-available > Fix For: 1.0.0 > > Time Spent: 1h 50m > Remaining Estimate: 0h > > It seems there is no method implemented to write a StructArrow (within a > TableArrow) to file. A common case would be list columns in a dataframe. If I > have understood the documentation correctly, the should be realisable within > the current C++ library framework. > I tested this with the follow df structure: > {code:none} > df > |-- id <column: string> > |-- data <column: list> > | |-- a <column: string> > | |-- b <column: integer> > | |-- c <column: factor> > | |-- d <column: double>{code} > I got the follow error message: > {code:none} > Error in Table__from_dots(dots, schema) : NotImplemented: Converting vector > to arrow type struct<a: string, b: int32, c: dictionary<values=string, > indices=int8, ordered=0>, d: double> not implemented{code} > I have tried it with {{arrow}} 0.17.0 under {{R}} 3.6.1 . -- This message was sent by Atlassian Jira (v8.3.4#803005)