Interface for melting data.frame?

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#4,024 2 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
25/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
r
Domain
data

Research direction

Start by reviewing the existing data.table::melt interface and the prior reshape-related issues referenced in the report. Determine whether continued data.frame support and a warning are part of the accepted scope; the issue is done only when the intended compatibility behavior is specified and implemented.

Written by the indexing model from the issue text.

Description

breaking-change reshape

I'm aware of the other issues that have been raised on this, but am trying to understand the rationale for removing the ability to melt a data.frame entirely, rather than simply switching away from the reshape dependency.

I have previously (perhaps wrongly) taught students to use data.table::melt on data frames. I understand the motivation to move away from reshape, but rather than breaking old code, would it be possible to coerce dataframes to data.table and use the new routines, obviously issuing a warning to the user as it happens?

Dominant language
R
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Forks
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Avg merge
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Merged PRs (30d)
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