daru | Data Analysis in RUby

 by   SciRuby Ruby Version: v0.2.2 License: BSD-2-Clause

kandi X-RAY | daru Summary

kandi X-RAY | daru Summary

daru is a Ruby library typically used in Data Science applications. daru has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

daru (Data Analysis in RUby) is a library for storage, analysis, manipulation and visualization of data in Ruby. daru makes it easy and intuitive to process data predominantly through 2 data structures: Daru::DataFrame and Daru::Vector. Written in pure Ruby works with all ruby implementations. Tested with MRI 2.5.1 and 2.7.1.

            kandi-support Support

              daru has a medium active ecosystem.
              It has 960 star(s) with 134 fork(s). There are 35 watchers for this library.
              It had no major release in the last 12 months.
              There are 84 open issues and 185 have been closed. On average issues are closed in 208 days. There are 8 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of daru is v0.2.2

            kandi-Quality Quality

              daru has 0 bugs and 0 code smells.

            kandi-Security Security

              daru has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              daru code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              daru is licensed under the BSD-2-Clause License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              daru releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.
              daru saves you 15328 person hours of effort in developing the same functionality from scratch.
              It has 30585 lines of code, 932 functions and 121 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed daru and discovered the below as its top functions. This is intended to give you an instant insight into daru implemented functionality, and help decide if they suit your requirements.
            • Initializes categories .
            • Creates a matrix with the given values .
            • recode an array
            • Sorts the categories .
            • Sorts the vector according to this vector .
            • Aggregates values into vectors
            • Retrieve a slice or a slice of the index .
            • Set vectors at positions
            • Retrieve vectors by positions
            • Create a numeric array of categories .
            Get all kandi verified functions for this library.

            daru Key Features

            No Key Features are available at this moment for daru.

            daru Examples and Code Snippets

            No Code Snippets are available at this moment for daru.

            Community Discussions


            Drop the first n rows from daru dataframe
            Asked 2020-Jan-21 at 12:05

            One can drop the first n elements of an array by using Array#drop.



            Answered 2018-Nov-27 at 10:26

            You can use row_at to retrieve all the rows without the first 4.


            Source https://stackoverflow.com/questions/53497206


            How to aggregate same column multiple times in daru
            Asked 2019-Nov-25 at 14:32

            I want to get grouped aggregated data, but running into a problem with the aggregating same column with multiple functions.

            Basically, I want to know if there is a way to rename an aggregated column, so it doesn't rewrite.

            Here is my code



            Answered 2019-Nov-25 at 14:32

            Well, I finally found the answer here.

            Agreggation of grouped data can be done like this:

            Source https://stackoverflow.com/questions/58342665


            Loading a time series from CSV into a DataFrame
            Asked 2019-Apr-26 at 06:20

            Is it possible to create a Daru DataFrame from a CSV in which the first column is a series of dates?

            Take the following CSV, for instance:



            Answered 2019-Apr-26 at 06:20
            df = Daru::DataFrame.from_csv("df.csv")
            df.set_index "time"
            df.index = Daru::DateTimeIndex.new(df.index)

            Source https://stackoverflow.com/questions/54961350


            Ruby group non-zero numbers and sequential times
            Asked 2018-Nov-07 at 10:08

            I have an array of items like so: [DateTime, value]. I want to group the items which satisfy the following conditions:

            • A sequence of 3 or more items
            • Items contain values which are > 0
            • times are sequential (increasing by 1 second)

            I want to get the indices of the start and end of the sequences that meet those conditions.




            Answered 2018-Nov-06 at 10:41
            t = Time.now
            a = [
              [t + 0, 1],
              [t + 1, 1],
              [t + 2, 1],
              [t + 3, 0],
              [t + 4, 1],
              [t + 5, 1],
              [t + 16, 1],
              [t + 17, 1],
              |(x, i), (y, j)|
              x[1].positive? and
              y[1].positive? and
              x[0].to_i.next == y[0].to_i
            .select{|chunk| chunk.length >= 3}
            .map{|chunk| [chunk.first[1], chunk.last[1]]}
            # => [[0, 2]]

            Source https://stackoverflow.com/questions/53169907

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install daru

            You can download it from GitHub.
            On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.


            Docs can be found here.
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