Summary

Fixes: https://github.com/jasp-stats/INTERNAL-jasp/issues/3107

Summary: Fix Issue #3107 - Mosaic Plot Sizing

What was wrong

The mosaic plots in the Effect Sizes analysis (phi effect size) were using a default width that was too small. The plots were created without an explicit width parameter, resulting in a default width derived from height * aspectRatio (500 * 1 = 500).

What was changed

Modified /workspace/R/LSeffectSizes.R in the .tsPhiPlot function to add explicit width = 650 to three createJaspPlot calls:

1. Line 1035: phiCombinedPlot - combined population and simulation plot
2. Line 1048: phiPopulationPlot - population distribution plot
3. Line 1060: phiSimulationPlot - simulation distribution plot

The new width of 650 represents a 30% increase from the previous default of 500 (500 * 1.3 = 650).

Verification

• R file loads without syntax errors
• No unit tests exist in this module to run
• The change is minimal and focused on the specific issue

Implementation Plan

Plan: Increase default width of mosaic plots by 30%

Root Cause

The phi effect size plots (mosaic plots) in /workspace/R/LSeffectSizes.R are created without specifying an explicit width parameter. Currently they use:

• height = 500
• aspectRatio = 1

This results in a default width of ~500 (height * aspectRatio). The issue requests increasing this by 30%, so the new width should be 650.

Location

File: /workspace/R/LSeffectSizes.R
Function: .tsPhiPlot (lines 1022-1072)

Changes Needed

Add width = 650 to three createJaspPlot calls:

1. Line 1035: phiCombinedPlot - combined population and simulation plot
2. Line 1048: phiPopulationPlot - population distribution plot
3. Line 1060: phiSimulationPlot - simulation distribution plot

All currently have height = 500, aspectRatio = 1. Adding width = 650 increases width by 30% (500 → 650).

Test Impact

• Existing tests may have snapshot expectations based on the old plot dimensions
• Tests will likely need snapshot updates if they compare exact plot dimensions
• The functional behavior of the plots remains the same, just larger

Test Results