DataFrame

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Currently it is impossible to sort by column

philippeback

DataFrameInternal - Using OrderedCollection over Array2D

1

DataFrameInternal currently uses Array2D (Previously it used Matrix https://github.com/PolyMathOrg/DataFrame/issues/44) Is there any specific reason such as speed/functionality for choosing Array2D? Currently, while adding/removing a row, entire dataframe gets re-created. This...

AtharvaKhare

DataFrame addRow/addColumn doesnt work on empty frames

1

Code: ```smalltalk x := DataFrame new. x addRow: #(1 2 3) ``` Current workaround is: ```smalltalk x := DataFrame withColumnNames: #(1 2 3). x addRow: #(1 2 3) ``` This...

AtharvaKhare

It should stream through rows of DataFrame. Having this would allow us to use DataFrame together with Port

olekscode

Problem parsing a simple CSV file

1

*(from the email by Peter Odehnal)* I will be manipulating several large (8,000+ rows) CSV files to analyse and clean the data. First, I'm getting familiar with DataFrame using small...

olekscode

DataFrameCsvReader should ignore spaces after commas in CSV files

2

The following line of a CSV file: ``` first_name, last_name, order_date, amount ``` Will be parser as: ```Smalltalk #('first_name' ' last_name' ' order_date' ' amount') ``` (with each string except...

olekscode

If you try to read the following CSV: https://gist.github.com/olekscode/8024947019d6ebd8424736707bd3e1d0 ```Smalltalk customersFile := 'customers.csv' asFileReference. customers := DataFrame readFromCsv: customersFile. ``` The `address` column will be parsed as Time: ```Smalltalk address...

olekscode

This should be an object that references certain rows and columns of the data frame without actually copying them. The way I see it now, DataFrameSlice should inherit all non-modifying...

olekscode

This is amazing: 1. [pandas.to_markdown](https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.to_markdown.html#pandas.DataFrame.to_markdown) 2. [pandas.to_latex](https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.to_latex.html#pandas.DataFrame.to_latex) 3. [pandas.to_html](https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.to_html.html#pandas.DataFrame.to_html) 4. [pandas.to_string](https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.to_string.html#pandas.DataFrame.to_string)

olekscode

There seems to be a problem in DataFrame with using `sorted:` on it. I have read from a file using a Dataframe `readFromCsv:` method, where the file has two columns:...

myroslavarm