Printing to Terminal about daru HOT 8 OPEN

Hello. Welcome to Daru.
I am a Daru user. Yes, It's hard to use Daru on the terminal.

1. You should use Jupyter Notebook/Lab if possible. Does IRuby not work well? Since iruby gem is old, it is better to install from github's master using specific_install.

• https://github.com/SciRuby/iruby
• https://github.com/rdp/specific_install

2. The width of the column shown on the terminal is specified here. All columns are the same width, not best fit. We need a contribution.

3. Daru has no option settings. We need improvement.
   #502

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1. It sounds like you are suggesting IRuby as a way to get notebook like output on the terminal. Is that the case?

2. I did find the Spacing and Threshold variables. Unfortunately, my values do vary widely in width. : )

I would be interested in contributing to this, I have briefly looked into the code for inspect. How would you envision I add a best fit printing function? It seems pretty_print is a missing method atm?

3. Ah, so no way to set max_colwidth and forget?

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@reedjosh

1. No, Column widths do not change with IRuby console/qtconsole. Sorry for my lack of explanation. I'm not a web developer. If you are working on rails, the following tools may be useful, (as you might have found).

   • https://github.com/Yuki-Inoue/jupyter_on_rails
   • https://github.com/SciRuby/iruby-rails

2. I'm glad to hear that. Ping @Shekharrajak

3. I just forget column width on a terminal and use Jupyter Lab. But, it is clear that Daru should have option settings.

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Thanks for reporting the issue. You can see the examples in IRuby notebook here.

@reedjosh , do you want to see all the colums (or all the rows)?

I see that Pandas in Python shell and daru in Ruby cell displays similar table structure.

[1] pry(main)> df = Daru::DataFrame.new([[1,2,3,4], [1,2,3,4]],order: [:a, :b], index: [:one, :two, :three, :four])
=> #<Daru::DataFrame(4x2)>
           a     b
   one     1     1
   two     2     2
 three     3     3
  four     4     4

>>> pd.DataFrame([[1,1], [2,2], [3,3], [4,4]], index=['one', 'two', 'three', 'four'], columns=['a','b'])
       a  b
one    1  1
two    2  2
three  3  3
four   4  4

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Pandas

• Column width is adjusted automatically.
• sepal_length is wide. species is narrow.

Daru

• Column name only partially displayed. Sepal.Leng should be Sepal.Length.
  • All columns are the same width.
• #<Daru::DataFrame(150x5)> is informative, but looks busy (for me).

The data I usually see does not fits in column widths. For example

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Thanks @kojix2 for letting me know this point. Yes! It should be adjusted and have option for setting the max width of the all the columns.

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Yes, Pandas auto-adjusts width, and Pandas prints without first printing the object.

I use pandas to display data on the command line quite often.

For now, I've setup to use tj/terminal-table for my final output. It works well enough.

Should I get around to it, I will work on this, but I won't be able to do so anytime soon. Thanks all for the consideration and work you've done to build DARU. It's much nicer than manually manipulating data!! : )

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Thanks @reedjosh for letting us know. Surely table structure will be improved in near future.

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