[jira] [Created] (SPARK-18823) Assignation by column name variable not available or bug?

["Vicente Masip (JIRA)" <ji...@apache.org>]

Vicente Masip created SPARK-18823:
-------------------------------------

             Summary: Assignation by column name variable not available or bug?
                 Key: SPARK-18823
                 URL: https://issues.apache.org/jira/browse/SPARK-18823
             Project: Spark
          Issue Type: Question
          Components: SparkR
    Affects Versions: 2.0.2
         Environment: RStudio Server in EC2 Instances (EMR Service of AWS) Emr 4. Or databricks (community.cloud.databricks.com) .
            Reporter: Vicente Masip
             Fix For: 2.0.2


I really don't know if this is a bug or can be done with some function:

Sometimes is very important to assign something to a column which name has to be access trough a variable. Normally, I have always used it with doble brackets likes this out of SparkR problems:

# df could be faithful normal data frame or data table.
# accesing by variable name:
myname = "waiting"
df[[myname]] <- c(1:nrow(df))
# or even column number
df[[2]] <- df$eruptions

The error is not caused by the right side of the "<-" operator of assignment. The problem is that I can't assign to a column name using a variable or column number as I do in this examples out of spark. Doesn't matter if I am modifying or creating column. Same problem.

I have also tried to use this with no results:
val df2 = withColumn(df,"tmp", df$eruptions)





--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org