daru v0.1.3 Release Notes
Release Date: 2016-05-01 // almost 8 years ago-
- ✨ Enhancements
- Proper error handling for case where an index specified by the user is not actually present in the DataFrame/Vector (@lokeshh).
- DataFrame CSV writer function will now supress headers when passing headers: false (@gnilrets).
- Refactor Index and MultiIndex so that a Vector or DataFrame can access the actual index number without having to check the exact type of index every time (@lokeshh).
- Refactor
Vector#[]=
to not use conditionals (@lokeshh). - Custom
#dup
method forDaru::DateTimeIndex
(@Deepakkoli93). - Massive performance boost to Vector and DataFrame sorting by using in-built Array#sort and removing previous hand-made sort (@lokeshh).
- Handle nils in sorting for Vectors and DataFrame (@lokeshh, @gnilrets).
- Add #describe function for Vectors (@shahsaurabh0605).
- Adds support for concatenating dataframes that don't share all the same vectors (@gnilrets).
- Massive performance enhancement for joins using the sorted merge method (@gnilrets).
- New statistics methods and tests for DataFrame (@shahsaurabh0605).
- Add explicit conversion to hash for DataFrame (DataFrame#to_h, Vector#to_h) and remove implicit conversion to hash (DataFrame#to_hash, Vector#to_hash) (@gnilrets).
- Add
DataFrame#rename_vectors
for simplifying renaming of vectors in DataFrame (@gnilrets). - MultiIndex raises error on accessing an invalid index (@shreyanshd).
- Order columns as given in the CSV file when reading into a DataFrame from CSV using
DataFrame.from_csv
(@lokeshh). - Add
Vector#percent_change
andDataFrame#percent_change
(@shahsaurabh0605). - Faster
DataFrame#filter_rows
(@lokeshh). - Added
Vector#emv
for calculating exponential moving variance of Vector (@shahsaurabh0605). - Add support for associating metadata with a Vector or DataFrame using the :metadata option (@gnilrets).
- Add
Vector#emsd
for calculating exponential moving standard deviation of Vector (@shahsaurabh0605). - Sample and population covariance functions for Vector (@shahsaurabh0605).
- Improve
DataFrame#dup
performance (@gnilrets). - Add
Daru::DataFrame::Core::GroupBy#reduce
for reducing groups by passing a block (@gnilrets). - Add rubocop as development dependency and make changes suggested by it to conform to the Ruby Style Guide (@zverok).
- Allow Daru::Index to be initialized by a Range (@lokeshh).
- 🛠 Fixes
- Fix conflict with narray that caused namespace clashes with nmatrix in case both narray and nmatrix were installed on the user's system (@lokeshh).
- Fix bug with dataframe concatenation that caused modifying the arrays that compose the vectors in the original dataframes (@gnilrets).
- Fix an error where the Vectors in an empty DataFrame would not be assigned correct names (@lokeshh).
- Correct spelling mistakes and fix broken links in README (@lokeshh).
- Fix bug in Vector#mode (@sunshineyyy).
- Fix
Vector#index_of
method to handle dtype :array differently (@lokeshh). - Fix
DateTimeIndex#include?
method since it was raising an exception when index not found. It returns false now (@Phitherek). - Handle nils in group_by keys (@gnilrets).
- Handle nils for statistics methods in Vector and DataFrame for :array and :gsl data (@lokeshh).
- Fix
DataFrame#clone
when no arguments have been passed to it (@lokeshh). - Fix bug when joining empty dataframes (@gnilrets).
- ✨ Enhancements