Numbering rows within groups in a data frame

rr-faqdataframe
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Simultaneously merge multiple data.frames in a list

rr-faqlistmergedataframe
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Split data frame string column into multiple columns

rr-faqstringsplitdataframe
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Repeat each row of data.frame the number of times specified in a column

rdataframereplicate
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How to make good reproducible Apache Spark examples

dataframeapache-sparkpysparkapache-spark-sql
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