Ok lets go one by one. Can you try and put mutate into scala dsl skeleton of in-core dataframe that does nothing? On May 5, 2014 8:22 PM, "Saikat Kanjilal (JIRA)" <j...@apache.org> wrote:
> > [ > https://issues.apache.org/jira/browse/MAHOUT-1490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13990236#comment-13990236] > > Saikat Kanjilal commented on MAHOUT-1490: > ----------------------------------------- > > d.mutate( let("gain") equal { col("ArrDelay") - col("DepDelay") } ) seems > rather verbose > > how about something like the following: > > d.mutate((v= gain) equal { col("ArrDelay") - col("DepDelay") } ) > > in the above expression v= would essentially create a defined identifier > called v > > I will put some more examples in the blog around select with this thinking > > Also what about the other functions I am proposing like running a function > around a dataframe (like map) or the slicing functionality around R, should > we keep those as part of this proposal? > > > Data frame R-like bindings > > -------------------------- > > > > Key: MAHOUT-1490 > > URL: https://issues.apache.org/jira/browse/MAHOUT-1490 > > Project: Mahout > > Issue Type: New Feature > > Reporter: Saikat Kanjilal > > Assignee: Dmitriy Lyubimov > > Fix For: 1.0 > > > > Original Estimate: 20h > > Remaining Estimate: 20h > > > > Create Data frame R-like bindings for spark > > > > -- > This message was sent by Atlassian JIRA > (v6.2#6252) >
