I investigated two typical situation like DataFrame in Pandas and Matrix in Matlab. They both expresses this as horizontally concatenation.
[image: image.png] [image: image.png] [image: image.png] Jialin Qiao <[email protected]> 于2023年2月6日周一 15:03写道： > +1 for Plan A: Rename it as HorizontallyConcatOperator. > ————————————————— > Jialin Qiao > Apache IoTDB PMC > > Xiangwei Wei <[email protected]> 于2023年2月6日周一 14:35写道： > > > > VerticallyConcatOperator is used to horizontally concatenate TsBlocks > with > > the same timestamp column. For example, > > TsBlock A is: > > | Time | ColumnA | > > | 1 | 1.0 | > > TsBlock B is: > > | Time | ColumnB | > > | 1 | 2.0 | > > After the VerticallyConcatOperator, the result will be: > > | Time | ColumnA | ColumnB | > > | 1 | 1.0 | 2.0 | > > > > Literally, I think it's a horizontal concatenation. So I suggest rename > it > > as HorizontallyConcatOperator. > > > > However, I asked the author about the reason for this name. He said, > "From > > the view of a table, adding columns means vertical changes." > > > > What's your opinion? > > > > +1 for Plan A: Rename it as HorizontallyConcatOperator. > > +1 for Plan B: Keep current name VerticallyConcatOperator. > > > > -- > > Best, > > Xiangwei Wei > -- Best, Xiangwei Wei
