Speaker: Sameer Deshmukh Fast and easy analysis, visualization of data, and scientific computing in general has been an uphill task for Rubyists due to the lack of suitable libraries. The good news is, the Ruby Science Foundation has introduced several tools that make Ruby a viable and highly approachable programming language for Scientific Computing, Data Analysis and Visualization. In this webinar we take a look at some innovative ways in which data analysis and visualization can be easily performed in Ruby. We also explore how you can leverage Ruby’s programmer friendly approach to create fast and intuitive scientific libraries.

1. Scientific Computation
and Data Visualization
in Ruby

2. Sameer Deshmukh
github.com/v0dro
@v0dro

3. Ruby
Science
Foundation
www.sciruby.com
@sciruby
@sciruby

5. iruby notebook

6. Browser based Ruby REPL
for interactive computing.

7. Runs in your
browser
Input cell – accepts
Ruby code
Output cell – can
render HTML/CSS/JS

9. nmatrix

10. n-dimensional array object.
Interface Ruby with
high speed C libraries.

11. require 'nmatrix'
n = NMatrix.new(
[2,2],
[1,2,3,4],
dtype: :float32,
stype: :dense
)
n[0,1] # => 2.0

12. Data Types
:int8 :float32
:int16 :float64
:int32 :complex64
:int64 :complex128

13. Storage types
Dense Dense matrix.
List Sparse matrix type storing data as a
linked list.
Yale Sparse type storing data in the 'New
Yale' format.

14. NMatrix C API

15. nmatrix
nmatrix-
atlas
nmatrix-
lapacke
nmatrix-
fftw
gsl

16. nmatrix is coming to jruby!

17. nyaplot

18. interactive plotting
tool for Rubyists.

19. interactive
HTML and JavaScript plots
that can be displayed in your
browser.

21. Mapnya
Nyaplot3D
Bionya
Map visualizations with inbuilt country charts.
Three Dimensional interactive plots.
Biology plots for visualizing relationships of genes.

22. gnuplotrb

23. Ruby wrapper over GNU Plot.
Convieniently exposes all GNU Plot
functions through Ruby.

24. require 'gnuplotrb'
plot = GnuplotRB::Plot.new(
[
[1,2.5,1.5,4],
with: 'linespoints'
]
)

26. require 'gnuplotrb'
plot = GnuplotRB::Plot.new(
[
[1,2.5,1.5,4],
with: 'linespoints'
],
[
[2,3,4.3,3],
with: 'lines'
]
)

28. statsample

30. daru
(Data Analysis in RUby)

31. daru ==
(Hindi)
दा

32. library for
analysis, cleaning, manipulation and
visualization
of data.

33. Read/write many data sources
Ephemeral statistics functions
Works well with 'wild' data
Data indexing

34. Acts as glue between other
SciRuby libraries.

35. Daru::Vector
Heterogenous Array that can be indexed on any
Ruby object.
Name
Label(0)
Label(1)
Label(2)
...
Label(n-1)

36. Daru::DataFrame
2D spreadsheet like data structure indexed by
rows or columns.
Col0
Label(0)
Label(1)
Label(2)
...
Label(n-1)
Col1 Col2 Col(n-1)
....

37. Thank You
Twitter: @v0dro
GitHub: @v0dro

38. Any questions?