Check out the DataFramesMeta
package: https://github.com/JuliaStats/DataFramesMeta.jl
On Wednesday, July 22, 2015 at 11:18:46 PM UTC-4, Clinton Brownley wrote:
>
> Hello,
>
> *Does the DataFrames package or the DataFramesMeta package provide
> syntax/functions you can use to filter for rows that contain a value that's
> in a specific set or that matches a specific pattern, similar to Pandas in
> Python?*
>
> For example in Pandas in Python:
>
> *# 1. Row Value Is In Set of Interest*
> set_of_interest = [7, 8]
> data_frame_value_in_set =
> data_frame[data_frame['quality'].isin(set_of_interest)]
>
> *# 2. Row Value Matches Specific Pattern*
> data_frame_value_matches_pattern =
> data_frame[data_frame['quality'].astype(str).str.contains("red")]
>
>
> I've watched the Intro to DataFrames YouTube video and read many online
> tutorials and blog posts, and I haven't found any good examples for these
> two row filtering cases. The closest I've gotten in the Set of Interest
> case is the following Julia/DataFrames code, but it won't scale well when
> the set contains many more values:
>
> *data_frame_value_in_set = data_frame[(data_frame[:quality] .== 7) |
> (data_frame[:quality] .== 8), :]*
>
>
> Thank you very much for your time and help!
>
> Sincerely,
> Clinton
>
