Siegfried Goeschl created FREEMARKER-144:
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Summary: [freemarker-cli] Proof Of Concept for providing DataFrames
Key: FREEMARKER-144
URL: https://issues.apache.org/jira/browse/FREEMARKER-144
Project: Apache Freemarker
Issue Type: Task
Reporter: Siegfried Goeschl
Sometime the user need to massage tabular data coming from CSV or an Excel
sheet, eg.. joining on columns
* There is some ad-hoc code in the CSV tool
* I had a look at available DataFrame libraries (see
https://medium.com/@thijser/doing-cool-data-science-in-java-how-3-dataframe-libraries-stack-up-5e6ccb7b437)
I finally found [nRo/DataFrame|https://github.com/nRo/DataFrame] and it would
make a good fit
* Comes with MIT licence
* Depends only on `antlr4-runtime` and `slf4j`
* It's API would fit nicely into a FreeMarker Template
* It provides a DataFrame implementation and some basic transformations
* It currently does not support temporal column types
What I would like to implement is
* Reading CSV & Excel into a DataFrame
* Write a DataFrame to CSV
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