Extracting proportions from data_tabulate()

[strengejacke]

Fixes #655

[strengejacke]

@etiennebacher Maybe we can move the code to create the crosstable into an own function, and then simplify (and only do) the formatting in format(). Then we have the proportions accessible as attribute and can maybe add an as.prop.table() method or something.

[etiennebacher]

Sorry, I forgot about this one. I'll make a CRAN release this week so it would be nice to have this PR in it too.

Maybe we can move the code to create the crosstable into an own function, and then simplify (and only do) the formatting in format(). Then we have the proportions accessible as attribute and can maybe add an as.prop.table() method or something.

Sounds good to me but isn't this already the case since the crosstable is built in .crosstable()?

[strengejacke]

The proportions are currently added in the format() method. In this PR, I wrote a .prop_table() function that calculates proportions and adds them as attributes, so we can easily extract then. We should built upon this function in format(). to avoid duplicated code .

[strengejacke]

Sorry, when updating the RD, other docs were also updated due to roxygen update.

I also got this warning:

[Copilot]

Pull Request Overview

This PR implements a feature to extract proportions from crosstables generated by data_tabulate(). The main purpose is to add functionality that saves proportion calculations as attributes and provides a new as.prop.table() method for easy access to these proportions.

• Adds as.prop.table() method for extracting proportions from crosstables
• Refactors proportion calculation code to eliminate duplication and improve maintainability
• Updates documentation examples to use simplified withAutoprint() syntax

Reviewed Changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
R/data_tabulate.R	Adds new as.prop.table() method and S3 methods for crosstab objects
R/data_xtabulate.R	Refactors proportion calculation logic and adds .prop_table() helper function
man/data_tabulate.Rd	Updates documentation to describe the new as.prop.table() method
NAMESPACE	Exports the new as.prop.table() method and S3 methods
NEWS.md	Documents the new feature in the changelog
DESCRIPTION	Updates package version and RoxygenNote version
Various .Rd files	Updates documentation examples to use simplified syntax
R/utils.R	Minor comment formatting fix

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[codecov]

Codecov Report

❌ Patch coverage is 58.13953% with 36 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.64%. Comparing base (9a624b1) to head (4ff1f54).
⚠️ Report is 27 commits behind head on main.

Files with missing lines	Patch %	Lines
R/data_tabulate.R	0.00%	33 Missing ⚠️
R/data_xtabulate.R	95.91%	2 Missing ⚠️
R/utils.R	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #656      +/-   ##
==========================================
- Coverage   91.73%   91.64%   -0.10%     
==========================================
  Files          76       76              
  Lines        6410     6604     +194     
==========================================
+ Hits         5880     6052     +172     
- Misses        530      552      +22     

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